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  • Linux下查看某个进程打开的文件数-losf工具常用参数介绍

                  Linux下查看某个进程打开的文件数-losf工具常用参数介绍

                                               作者:尹正杰

    版权声明:原创作品,谢绝转载!否则将追究法律责任。

      在linux操作系统中,一切皆文件。通过文件不仅仅可以访问常规数据,还可以访问网络连接和硬件。比如说传输控制协议 (TCP) 和用户数据报协议 (UDP) 套接字等。有时候我们可能需要统计一下那个进程占用了那类文件,或者该进程总共打开的文件数等等,此时我们就需要一个工具帮我们查看相应的信息啦,它就是本片博客的主人公-lsof。

      

    一.losf是个什么玩意?

    1>.losf是个

      如上所述,在Linux中,一切皆文件。lsof(list open files)是一个列出当前系统打开文件的工具。

    2>.losf可以列出被进程所打开的文件的信息

      系统在后台都为该应用程序分配了一个文件描述符,无论这个文件的本质如何,该文件描述符为应用程序与基础操作系统之间的交互提供了通用接口。因为应用程序打开文件的描述符列表提供了大量关于这个应用程序本身的信息,因此通过lsof工具能够查看这个列表对系统监测以及排错将是很有帮助的。被打开的文件可以是:

    1.普通的文件;
    2.目录  
    3.网络文件系统的文件
    4.字符设备文件  
    5.(函数)共享库  
    6.管道,命名管道 
    7.符号链接
    8.底层的socket字流,网络socket,unix域名socket
    9.还有一些其他的文件我这里就不一一列举了,在linux操作系统中,一切皆文件。

    2>.安装losf工具包

    [root@yinzhengjie ~]# yum -y install lsof
    Loaded plugins: fastestmirror
    Loading mirror speeds from cached hostfile
     * base: mirrors.aliyun.com
     * extras: mirrors.aliyun.com
     * updates: mirrors.aliyun.com
    Resolving Dependencies
    --> Running transaction check
    ---> Package lsof.x86_64 0:4.87-5.el7 will be installed
    --> Finished Dependency Resolution
    
    Dependencies Resolved
    
    ====================================================================================================================================================================
     Package                              Arch                                   Version                                     Repository                            Size
    ====================================================================================================================================================================
    Installing:
     lsof                                 x86_64                                 4.87-5.el7                                  base                                 331 k
    
    Transaction Summary
    ====================================================================================================================================================================
    Install  1 Package
    
    Total download size: 331 k
    Installed size: 927 k
    Downloading packages:
    lsof-4.87-5.el7.x86_64.rpm                                                                                                                   | 331 kB  00:00:00     
    Running transaction check
    Running transaction test
    Transaction test succeeded
    Running transaction
      Installing : lsof-4.87-5.el7.x86_64                                                                                                                           1/1 
      Verifying  : lsof-4.87-5.el7.x86_64                                                                                                                           1/1 
    
    Installed:
      lsof.x86_64 0:4.87-5.el7                                                                                                                                          
    
    Complete!
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# yum -y install lsof

    3>.查看losf命令的帮助信息

    [root@yinzhengjie ~]# lsof -h
    lsof 4.87
     latest revision: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/
     latest FAQ: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQ
     latest man page: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/lsof_man
     usage: [-?abhKlnNoOPRtUvVX] [+|-c c] [+|-d s] [+D D] [+|-f[gG]] [+|-e s]
     [-F [f]] [-g [s]] [-i [i]] [+|-L [l]] [+m [m]] [+|-M] [-o [o]] [-p s]
    [+|-r [t]] [-s [p:s]] [-S [t]] [-T [t]] [-u s] [+|-w] [-x [fl]] [--] [names]
    Defaults in parentheses; comma-separated set (s) items; dash-separated ranges.
      -?|-h list help          -a AND selections (OR)     -b avoid kernel blocks
      -c c  cmd c ^c /c/[bix]  +c w  COMMAND width (9)    +d s  dir s files
      -d s  select by FD set   +D D  dir D tree *SLOW?*   +|-e s  exempt s *RISKY*
      -i select IPv[46] files  -K list tasKs (threads)    -l list UID numbers
      -n no host names         -N select NFS files        -o list file offset
      -O no overhead *RISKY*   -P no port names           -R list paRent PID
      -s list file size        -t terse listing           -T disable TCP/TPI info
      -U select Unix socket    -v list version info       -V verbose search
      +|-w  Warnings (+)       -X skip TCP&UDP* files     -Z Z  context [Z]
      -- end option scan     
      +f|-f  +filesystem or -file names     +|-f[gG] flaGs 
      -F [f] select fields; -F? for help  
      +|-L [l] list (+) suppress (-) link counts < l (0 = all; default = 0)
                                            +m [m] use|create mount supplement
      +|-M   portMap registration (-)       -o o   o 0t offset digits (8)
      -p s   exclude(^)|select PIDs         -S [t] t second stat timeout (15)
      -T qs TCP/TPI Q,St (s) info
      -g [s] exclude(^)|select and print process group IDs
      -i i   select by IPv[46] address: [46][proto][@host|addr][:svc_list|port_list]
      +|-r [t[m<fmt>]] repeat every t seconds (15);  + until no files, - forever.
           An optional suffix to t is m<fmt>; m must separate t from <fmt> and
          <fmt> is an strftime(3) format for the marker line.
      -s p:s  exclude(^)|select protocol (p = TCP|UDP) states by name(s).
      -u s   exclude(^)|select login|UID set s
      -x [fl] cross over +d|+D File systems or symbolic Links
      names  select named files or files on named file systems
    Anyone can list all files; /dev warnings disabled; kernel ID check disabled.
    [root@yinzhengjie ~]# 

      大家也看到了帮助信息,参数还挺多的,不过大家不要慌,其实工作中我们用不了几个参数,我常用的几个参数如下:

    -a : 结果进行“与”运算(而不是“或”)
    -l : 在输出显示用户ID而不是用户名
    -h : 获得帮助
    -t : 仅获取进程ID
    -U : 获取UNIX套接口地址
    -F : 格式化输出结果,用于其它命令。可以通过多种方式格式化,如-F pcfn(用于进程id、命令名、文件描述符、文件名,并以空终止)

      光说不练假把式,接下来,我们就来搞点事情,把一些常用参数的案例来耍一耍。

    二.lsof使用案例

    1>.统计操作系统所有打开的文件(如果不加任何参数,就会打开所有被打开的文件,建议加上一下参数来具体定位)

    [root@yinzhengjie ~]# hostname
    yinzhengjie
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# hostname -i
    10.1.2.105
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof | wc -l                           #突然发现我的虚拟机还听可以的,竟然能打开33万的连接数呢!
    334283
    [root@yinzhengjie ~]# 

    2>.递归查看某个目录正在使用的文件信息

    [root@yinzhengjie ~]# lsof +D /soft/
    COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF      NODE NAME
    java     9462   hdfs  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java     9462   hdfs  mem    REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java     9462   hdfs  mem    REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java     9462   hdfs  mem    REG  253,0  3135391  34301139 /soft/jdk1.8.0_131/jre/lib/charsets.jar
    java     9462   hdfs  mem    REG  253,0  3505330  34301180 /soft/jdk1.8.0_131/jre/lib/resources.jar
    java     9462   hdfs  mem    REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java     9462   hdfs  mem    REG  253,0   256766  67644903 /soft/jdk1.8.0_131/jre/lib/amd64/libsunec.so
    java     9462   hdfs  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java     9462   hdfs  mem    REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java     9462   hdfs  mem    REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java     9462   hdfs  mem    REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java     9462   hdfs  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java     9462   hdfs  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java     9462   hdfs  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java     9462   hdfs  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java     9462   hdfs  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java     9462   hdfs  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java     9462   hdfs  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java     9462   hdfs  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java     9462   hdfs  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java     9462   hdfs  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java     9462   hdfs    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java     9462   hdfs  166r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java     9462   hdfs  178r   REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java     9462   hdfs  181r   REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java     9462   hdfs  182r   REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java     9462   hdfs  188r   REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java     9462   hdfs  201r   REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java     9462   hdfs  202r   REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java     9462   hdfs  229r   REG  253,0  3505330  34301180 /soft/jdk1.8.0_131/jre/lib/resources.jar
    java     9462   hdfs  234r   REG  253,0  3135391  34301139 /soft/jdk1.8.0_131/jre/lib/charsets.jar
    java     9464 httpfs  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java     9464 httpfs  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java     9464 httpfs  mem    REG  253,0   256766  67644903 /soft/jdk1.8.0_131/jre/lib/amd64/libsunec.so
    java     9464 httpfs  mem    REG  253,0    37420  68950545 /soft/jdk1.8.0_131/jre/lib/amd64/libawt_headless.so
    java     9464 httpfs  mem    REG  253,0   772804  67278525 /soft/jdk1.8.0_131/jre/lib/amd64/libawt.so
    java     9464 httpfs  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java     9464 httpfs  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java     9464 httpfs  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java     9464 httpfs  mem    REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java     9464 httpfs  mem    REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java     9464 httpfs  mem    REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java     9464 httpfs  mem    REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java     9464 httpfs  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java     9464 httpfs  mem    REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java     9464 httpfs  mem    REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java     9464 httpfs  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java     9464 httpfs  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java     9464 httpfs  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java     9464 httpfs  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java     9464 httpfs  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java     9464 httpfs  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java     9464 httpfs    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java     9464 httpfs   30r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java     9464 httpfs   31r   REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java     9464 httpfs   32r   REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java     9464 httpfs   33r   REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java     9464 httpfs   34r   REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java     9464 httpfs   35r   REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java     9464 httpfs   42r   REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java     9466   hdfs  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java     9466   hdfs  mem    REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java     9466   hdfs  mem    REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java     9466   hdfs  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java     9466   hdfs  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java     9466   hdfs  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java     9466   hdfs  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java     9466   hdfs  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java     9466   hdfs  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java     9466   hdfs  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java     9466   hdfs  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java     9466   hdfs  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java     9466   hdfs  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java     9466   hdfs  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java     9466   hdfs    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java     9466   hdfs  180r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java     9466   hdfs  187r   REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java     9466   hdfs  191r   REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java    10309 mapred  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java    10309 mapred  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java    10309 mapred  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java    10309 mapred  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java    10309 mapred  mem    REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java    10309 mapred  mem    REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java    10309 mapred  mem    REG  253,0   256766  67644903 /soft/jdk1.8.0_131/jre/lib/amd64/libsunec.so
    java    10309 mapred  mem    REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java    10309 mapred  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    10309 mapred  mem    REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java    10309 mapred  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java    10309 mapred  mem    REG  253,0 18281385  34301244 /soft/jdk1.8.0_131/lib/tools.jar
    java    10309 mapred  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    10309 mapred  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java    10309 mapred  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java    10309 mapred  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java    10309 mapred  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java    10309 mapred  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java    10309 mapred    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    10309 mapred    5r   REG  253,0 18281385  34301244 /soft/jdk1.8.0_131/lib/tools.jar
    java    10309 mapred  132r   REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java    10309 mapred  133r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    10309 mapred  140r   REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java    10309 mapred  141r   REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java    10309 mapred  154r   REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java    10339   yarn  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java    10339   yarn  mem    REG  253,0  3505330  34301180 /soft/jdk1.8.0_131/jre/lib/resources.jar
    java    10339   yarn  mem    REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java    10339   yarn  mem    REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java    10339   yarn  mem    REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java    10339   yarn  mem    REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java    10339   yarn  mem    REG  253,0   256766  67644903 /soft/jdk1.8.0_131/jre/lib/amd64/libsunec.so
    java    10339   yarn  mem    REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java    10339   yarn  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    10339   yarn  mem    REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java    10339   yarn  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java    10339   yarn  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java    10339   yarn  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java    10339   yarn  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java    10339   yarn  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    10339   yarn  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java    10339   yarn  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java    10339   yarn  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java    10339   yarn  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java    10339   yarn  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java    10339   yarn    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    10339   yarn  163r   REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java    10339   yarn  164r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    10339   yarn  174r   REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java    10339   yarn  175r   REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java    10339   yarn  176r   REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java    10339   yarn  227r   REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java    10339   yarn  228r   REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java    10339   yarn  229r   REG  253,0  3505330  34301180 /soft/jdk1.8.0_131/jre/lib/resources.jar
    java    10367 mapred  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java    10367 mapred  mem    REG  253,0  3505330  34301180 /soft/jdk1.8.0_131/jre/lib/resources.jar
    java    10367 mapred  mem    REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java    10367 mapred  mem    REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java    10367 mapred  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java    10367 mapred  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java    10367 mapred  mem    REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java    10367 mapred  mem    REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java    10367 mapred  mem    REG  253,0   256766  67644903 /soft/jdk1.8.0_131/jre/lib/amd64/libsunec.so
    java    10367 mapred  mem    REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java    10367 mapred  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    10367 mapred  mem    REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java    10367 mapred  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java    10367 mapred  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java    10367 mapred  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    10367 mapred  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java    10367 mapred  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java    10367 mapred  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java    10367 mapred  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java    10367 mapred  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java    10367 mapred    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    10367 mapred  162r   REG  253,0   116446  34301165 /soft/jdk1.8.0_131/jre/lib/jce.jar
    java    10367 mapred  163r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    10367 mapred  170r   REG  253,0    42154  34301210 /soft/jdk1.8.0_131/jre/lib/ext/sunec.jar
    java    10367 mapred  171r   REG  253,0   280161  34301212 /soft/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar
    java    10367 mapred  172r   REG  253,0   251327  34301213 /soft/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar
    java    10367 mapred  205r   REG  253,0  3860502  34301202 /soft/jdk1.8.0_131/jre/lib/ext/cldrdata.jar
    java    10367 mapred  206r   REG  253,0  1179093  34301206 /soft/jdk1.8.0_131/jre/lib/ext/localedata.jar
    java    10367 mapred  207r   REG  253,0  3505330  34301180 /soft/jdk1.8.0_131/jre/lib/resources.jar
    java    11052  spark  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java    11052  spark  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java    11052  spark  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    11052  spark  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java    11052  spark  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java    11052  spark  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java    11052  spark  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    11052  spark  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java    11052  spark  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java    11052  spark  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java    11052  spark  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java    11052  spark  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java    11052  spark    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    11052  spark  333r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    11054  spark  txt    REG  253,0     7734  38887742 /soft/jdk1.8.0_131/bin/java
    java    11054  spark  mem    REG  253,0    93112  68950578 /soft/jdk1.8.0_131/jre/lib/amd64/libnio.so
    java    11054  spark  mem    REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    java    11054  spark  mem    REG  253,0     7652  67160130 /soft/jdk1.8.0_131/jre/lib/amd64/libjaas_unix.so
    java    11054  spark  mem    REG  253,0   115814  67448230 /soft/jdk1.8.0_131/jre/lib/amd64/libnet.so
    java    11054  spark  mem    REG  253,0    50289  68950577 /soft/jdk1.8.0_131/jre/lib/amd64/libmanagement.so
    java    11054  spark  mem    REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    11054  spark  mem    REG  253,0   124327  67644909 /soft/jdk1.8.0_131/jre/lib/amd64/libzip.so
    java    11054  spark  mem    REG  253,0   225914  68950560 /soft/jdk1.8.0_131/jre/lib/amd64/libjava.so
    java    11054  spark  mem    REG  253,0    65672  67644908 /soft/jdk1.8.0_131/jre/lib/amd64/libverify.so
    java    11054  spark  mem    REG  253,0 16995339    804714 /soft/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so
    java    11054  spark  mem    REG  253,0   102990 100734734 /soft/jdk1.8.0_131/lib/amd64/jli/libjli.so
    java    11054  spark    3r   REG  253,0 66159478  34301181 /soft/jdk1.8.0_131/jre/lib/rt.jar
    java    11054  spark  283r   REG  253,0   647516  34301169 /soft/jdk1.8.0_131/jre/lib/jsse.jar
    [root@yinzhengjie ~]#  
    [root@yinzhengjie ~]# lsof +D /soft/                #使用了+D,对应目录下的所有子目录和文件都会被列出

    3>.查看某个文件正在被谁使用

    [root@yinzhengjie ~]# lsof /soft/jdk1.8.0_131/bin/java                      #如果没有输出的话,则说明没有任何用户使用当前文件哟!
    COMMAND   PID   USER  FD   TYPE DEVICE SIZE/OFF     NODE NAME
    java     9462   hdfs txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java     9464 httpfs txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java     9466   hdfs txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java    10309 mapred txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java    10339   yarn txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java    10367 mapred txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java    11052  spark txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    java    11054  spark txt    REG  253,0     7734 38887742 /soft/jdk1.8.0_131/bin/java
    [root@yinzhengjie ~]# 
    
    
    
    
    
    
    字段补充说明,lsof输出各列信息的意义如下:
    COMMAND:进程的名称 PID:进程标识符
    
    USER:进程所有者
    
    FD:文件描述符,应用程序通过文件描述符识别该文件。如cwd、txt等 TYPE:文件类型,如DIR、REG等
    
    DEVICE:指定磁盘的名称
    
    SIZE:文件的大小
    
    NODE:索引节点(文件在磁盘上的标识)
    
    NAME:打开文件的确切名称
    
    FD 列中的文件描述符cwd 值表示应用程序的当前工作目录,这是该应用程序启动的目录,除非它本身对这个目录进行更改,txt 类型的文件是程序代码,如应用程序二进制文件本身或共享库,如上列表中显示的 /sbin/init 程序。
    
    对文件描述符FD的补充说明:
        其次数值表示应用程序的文件描述符,这是打开该文件时返回的一个整数。如上的最后一行文件/dev/initctl,其文件描述符为 10。u 表示该文件被打开并处于读取/写入模式,而不是只读 ® 或只写 (w) 模式。同时还有大写 的W 表示该应用程序具有对整个文件的写锁。该文件描述符用于确保每次只能打开一个应用程序实例。初始打开每个应用程序时,都具有三个文件描述符,从 02,分别表示标准输入、输出和错误流。所以大多数应用程序所打开的文件的 FD 都是从 3 开始。与 FD 列相比,Type 列则比较直观。文件和目录分别称为 REG 和 DIR。而CHR 和 BLK,分别表示字符和块设备;或者 UNIX、FIFO 和 IPv4,分别表示 UNIX 域套接字、先进先出 (FIFO) 队列和网际协议 (IP) 套接字。

    4>.列出某个程序所打开的文件信息 

    [root@yinzhengjie ~]# lsof -c java | wc -l           #我们统计一下java进程打开的文件数
    3385
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof | grep java | wc -l           #你会发现下面的这个参数这个文件打开文件数要比上面的多得多呢!
    318720
    [root@yinzhengjie ~]# 

    5>.列出多个程序多打开的文件信息 

    [root@yinzhengjie ~]# lsof -c java | wc -l
    3385
    [root@yinzhengjie ~]# lsof -c mysql | wc -l
    152
    [root@yinzhengjie ~]# lsof -c java -c mysql | wc -l 
    3537
    [root@yinzhengjie ~]# 

    6>.列出某个用户通过某个命令打开的文件数

    [root@yinzhengjie ~]# lsof -u root -c mysql |wc -l
    2270
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -u hdfs -c mysql |wc -l    
    1063
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -u hive -c mysql |wc -l   
    152
    [root@yinzhengjie ~]# 

    7>.使用-i显示所有连接(其功能并不比netstat -untalp功能弱!)

    [root@yinzhengjie ~]# lsof -i
    COMMAND     PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
    httpd       505 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    chronyd     881 chrony    1u  IPv4   29047      0t0  UDP localhost:323 
    chronyd     881 chrony    2u  IPv6   29048      0t0  UDP localhost:323 
    chronyd     881 chrony    4u  IPv4 3586879      0t0  UDP node105.yinzhengjie.org.cn:52474->119.28.183.184:ntp 
    sshd       1108   root    3u  IPv4   25711      0t0  TCP *:ssh (LISTEN)
    sshd       1108   root    4u  IPv6   25713      0t0  TCP *:ssh (LISTEN)
    httpd      1119   root    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    zabbix_ag  1176 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1179 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1180 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1181 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1182 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1183 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1184 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_se  1435 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    mysqld     1461  mysql   13u  IPv6   32852      0t0  TCP *:mysql (LISTEN)
    mysqld     1461  mysql   86u  IPv6   10121      0t0  TCP node105.yinzhengjie.org.cn:mysql->10.19.104.189:45260 (ESTABLISHED)
    httpd      1536 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    master     1545   root   13u  IPv4   32802      0t0  TCP localhost:smtp (LISTEN)
    master     1545   root   14u  IPv6   32803      0t0  TCP localhost:smtp (LISTEN)
    zabbix_se  1856 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1857 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1858 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1859 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1860 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1861 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1862 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1863 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1864 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1865 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1867 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1868 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1871 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1873 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1874 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1876 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1877 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1878 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1880 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1882 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1883 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1885 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1887 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1889 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1891 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1893 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1895 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    httpd      2285 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      2614 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      2946 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      3275 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      3599 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    sshd       7361   root    3u  IPv4 2534674      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:60030 (ESTABLISHED)
    cmf-agent  8393   root    8u  IPv4  153213      0t0  TCP localhost:41146->localhost:19001 (ESTABLISHED)
    cmf-agent  8393   root   12u  IPv4  158126      0t0  TCP node105.yinzhengjie.org.cn:cslistener (LISTEN)
    cmf-agent  8393   root   13u  IPv4  159710      0t0  TCP node105.yinzhengjie.org.cn:57772->node101.yinzhengjie.org.cn:7182 (ESTABLISHED)
    cmf-agent  8393   root   15u  IPv4  176648      0t0  TCP node105.yinzhengjie.org.cn:59654->node101.yinzhengjie.org.cn:palace-4 (ESTABLISHED)
    cmf-agent  8393   root   16u  IPv4  173508      0t0  TCP node105.yinzhengjie.org.cn:34906->node101.yinzhengjie.org.cn:palace-6 (ESTABLISHED)
    python     8410   root    4u  IPv4  153210      0t0  TCP localhost:19001 (LISTEN)
    python     8410   root    6u  IPv4  151318      0t0  TCP localhost:19001->localhost:41146 (ESTABLISHED)
    python2.7  8605   root    7u  IPv4  165868      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root    8u  IPv4  165869      0t0  TCP *:vop (LISTEN)
    python2.7  8605   root   10u  IPv6  165871      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root   11u  IPv6  165872      0t0  TCP *:4434 (LISTEN)
    python2.7  8605   root   12u  IPv4  165875      0t0  UDP *:7191 
    python2.7  8605   root   13u  IPv6  165877      0t0  UDP *:7191 
    python2.7  8605   root   14u  IPv4  172336      0t0  TCP localhost:7190 (LISTEN)
    java       9462   hdfs  173u  IPv4  179459      0t0  TCP node105.yinzhengjie.org.cn:50070 (LISTEN)
    java       9462   hdfs  179u  IPv4  177481      0t0  TCP node105.yinzhengjie.org.cn:46074->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java       9462   hdfs  180u  IPv4  190539      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node103.yinzhengjie.org.cn:58068 (ESTABLISHED)
    java       9462   hdfs  189u  IPv4  182815      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node104.yinzhengjie.org.cn:44344 (ESTABLISHED)
    java       9462   hdfs  190u  IPv4 3589901      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:47546 (ESTABLISHED)
    java       9462   hdfs  191u  IPv4 3589899      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:47544 (ESTABLISHED)
    java       9462   hdfs  194u  IPv4 3591177      0t0  TCP node105.yinzhengjie.org.cn:50950->node104.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  206u  IPv4  154451      0t0  TCP node105.yinzhengjie.org.cn:oa-system (LISTEN)
    java       9462   hdfs  216u  IPv4  154455      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc (LISTEN)
    java       9462   hdfs  227u  IPv4  153372      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node105.yinzhengjie.org.cn:40886 (ESTABLISHED)
    java       9462   hdfs  230u  IPv4  170452      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node102.yinzhengjie.org.cn:60652 (ESTABLISHED)
    java       9462   hdfs  238u  IPv4 3469184      0t0  TCP node105.yinzhengjie.org.cn:45354->node102.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  239u  IPv4 3583878      0t0  TCP node105.yinzhengjie.org.cn:52060->node103.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9464 httpfs   44u  IPv4  176699      0t0  TCP *:scotty-ft (LISTEN)
    java       9464 httpfs   46u  IPv4  176706      0t0  TCP localhost:sua (LISTEN)
    java       9466   hdfs  164u  IPv4  171473      0t0  TCP node105.yinzhengjie.org.cn:40886->node105.yinzhengjie.org.cn:oa-system (ESTABLISHED)
    java       9466   hdfs  169u  IPv4  178201      0t0  TCP node105.yinzhengjie.org.cn:qbdb (LISTEN)
    java       9466   hdfs  192u  IPv4  417868      0t0  TCP node105.yinzhengjie.org.cn:34984->node103.yinzhengjie.org.cn:eforward (ESTABLISHED)
    java       9466   hdfs  193u  IPv4  179462      0t0  TCP node105.yinzhengjie.org.cn:46080->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  142u  IPv4  178228      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client (LISTEN)
    java      10309 mapred  153u  IPv4  180271      0t0  TCP node105.yinzhengjie.org.cn:46154->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  155u  IPv4  178238      0t0  TCP *:50030 (LISTEN)
    java      10309 mapred  169u  IPv4  179715      0t0  TCP node105.yinzhengjie.org.cn:9290 (LISTEN)
    java      10309 mapred  170u  IPv4  178474      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node104.yinzhengjie.org.cn:57478 (ESTABLISHED)
    java      10309 mapred  171u  IPv4  180281      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node103.yinzhengjie.org.cn:45932 (ESTABLISHED)
    java      10309 mapred  172u  IPv4  178475      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node102.yinzhengjie.org.cn:42866 (ESTABLISHED)
    java      10339   yarn  161u  IPv4  173527      0t0  TCP node105.yinzhengjie.org.cn:46150->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10339   yarn  177u  IPv4  156862      0t0  TCP node105.yinzhengjie.org.cn:8031 (LISTEN)
    java      10339   yarn  188u  IPv4  170464      0t0  TCP node105.yinzhengjie.org.cn:8030 (LISTEN)
    java      10339   yarn  198u  IPv4  173531      0t0  TCP node105.yinzhengjie.org.cn:pro-ed (LISTEN)
    java      10339   yarn  208u  IPv4  108344      0t0  TCP node105.yinzhengjie.org.cn:radan-http (LISTEN)
    java      10339   yarn  212u  IPv4  154480      0t0  TCP node105.yinzhengjie.org.cn:mindprint (LISTEN)
    java      10339   yarn  222u  IPv4  169567      0t0  TCP node105.yinzhengjie.org.cn:8031->node102.yinzhengjie.org.cn:55818 (ESTABLISHED)
    java      10339   yarn  223u  IPv4  172682      0t0  TCP node105.yinzhengjie.org.cn:8031->node103.yinzhengjie.org.cn:51108 (ESTABLISHED)
    java      10339   yarn  224u  IPv4  190392      0t0  TCP node105.yinzhengjie.org.cn:8031->node104.yinzhengjie.org.cn:34546 (ESTABLISHED)
    java      10367 mapred  180u  IPv4  181286      0t0  TCP node105.yinzhengjie.org.cn:10033 (LISTEN)
    java      10367 mapred  191u  IPv4  171536      0t0  TCP node105.yinzhengjie.org.cn:19888 (LISTEN)
    java      10367 mapred  195u  IPv4  169563      0t0  TCP node105.yinzhengjie.org.cn:10020 (LISTEN)
    java      10367 mapred  211u  IPv4  171800      0t0  TCP node105.yinzhengjie.org.cn:46856->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      11052  spark  342u  IPv4 3569566      0t0  TCP node105.yinzhengjie.org.cn:47544->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      11052  spark  347u  IPv4  169631      0t0  TCP *:18088 (LISTEN)
    java      11054  spark  292u  IPv4 3587950      0t0  TCP node105.yinzhengjie.org.cn:47546->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      11054  spark  297u  IPv4  178539      0t0  TCP *:18089 (LISTEN)
    httpd     26141 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    sshd      27132   root    3u  IPv4 2554221      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:44284 (ESTABLISHED)
    httpd     31657 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd     32298 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i | wc -l
    120
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# netstat -untalp | wc -l
    96
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i
    [root@yinzhengjie ~]# lsof -i 6
    COMMAND     PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
    httpd       505 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    chronyd     881 chrony    2u  IPv6  29048      0t0  UDP localhost:323 
    sshd       1108   root    4u  IPv6  25713      0t0  TCP *:ssh (LISTEN)
    httpd      1119   root    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    mysqld     1461  mysql   13u  IPv6  32852      0t0  TCP *:mysql (LISTEN)
    mysqld     1461  mysql   86u  IPv6  10121      0t0  TCP node105.yinzhengjie.org.cn:mysql->10.19.104.189:45260 (ESTABLISHED)
    httpd      1536 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    master     1545   root   14u  IPv6  32803      0t0  TCP localhost:smtp (LISTEN)
    httpd      2285 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      2614 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      2946 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      3275 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      3599 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    python2.7  8605   root   10u  IPv6 165871      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root   11u  IPv6 165872      0t0  TCP *:4434 (LISTEN)
    python2.7  8605   root   13u  IPv6 165877      0t0  UDP *:7191 
    httpd     26141 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd     31657 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd     32298 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i 6                                #仅获取ipv6的流量
    [root@yinzhengjie ~]# lsof -iTCP
    COMMAND     PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
    httpd       505 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    sshd       1108   root    3u  IPv4   25711      0t0  TCP *:ssh (LISTEN)
    sshd       1108   root    4u  IPv6   25713      0t0  TCP *:ssh (LISTEN)
    httpd      1119   root    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    zabbix_ag  1176 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1179 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1180 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1181 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1182 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1183 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1184 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_se  1435 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    mysqld     1461  mysql   13u  IPv6   32852      0t0  TCP *:mysql (LISTEN)
    mysqld     1461  mysql   86u  IPv6   10121      0t0  TCP node105.yinzhengjie.org.cn:mysql->10.19.104.189:45260 (ESTABLISHED)
    httpd      1536 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    master     1545   root   13u  IPv4   32802      0t0  TCP localhost:smtp (LISTEN)
    master     1545   root   14u  IPv6   32803      0t0  TCP localhost:smtp (LISTEN)
    zabbix_se  1856 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1857 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1858 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1859 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1860 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1861 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1862 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1863 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1864 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1865 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1867 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1868 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1871 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1873 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1874 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1876 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1877 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1878 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1880 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1882 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1883 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1885 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1887 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1889 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1891 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1893 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1895 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    httpd      2285 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      2614 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      2946 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      3275 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      3599 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    sshd       7361   root    3u  IPv4 2534674      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:60030 (ESTABLISHED)
    cmf-agent  8393   root    8u  IPv4  153213      0t0  TCP localhost:41146->localhost:19001 (ESTABLISHED)
    cmf-agent  8393   root   12u  IPv4  158126      0t0  TCP node105.yinzhengjie.org.cn:cslistener (LISTEN)
    cmf-agent  8393   root   13u  IPv4  159710      0t0  TCP node105.yinzhengjie.org.cn:57772->node101.yinzhengjie.org.cn:7182 (ESTABLISHED)
    cmf-agent  8393   root   15u  IPv4  176648      0t0  TCP node105.yinzhengjie.org.cn:59654->node101.yinzhengjie.org.cn:palace-4 (ESTABLISHED)
    cmf-agent  8393   root   16u  IPv4  173508      0t0  TCP node105.yinzhengjie.org.cn:34906->node101.yinzhengjie.org.cn:palace-6 (ESTABLISHED)
    python     8410   root    4u  IPv4  153210      0t0  TCP localhost:19001 (LISTEN)
    python     8410   root    6u  IPv4  151318      0t0  TCP localhost:19001->localhost:41146 (ESTABLISHED)
    python2.7  8605   root    7u  IPv4  165868      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root    8u  IPv4  165869      0t0  TCP *:vop (LISTEN)
    python2.7  8605   root   10u  IPv6  165871      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root   11u  IPv6  165872      0t0  TCP *:4434 (LISTEN)
    python2.7  8605   root   14u  IPv4  172336      0t0  TCP localhost:7190 (LISTEN)
    java       9462   hdfs  173u  IPv4  179459      0t0  TCP node105.yinzhengjie.org.cn:50070 (LISTEN)
    java       9462   hdfs  179u  IPv4  177481      0t0  TCP node105.yinzhengjie.org.cn:46074->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java       9462   hdfs  180u  IPv4  190539      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node103.yinzhengjie.org.cn:58068 (ESTABLISHED)
    java       9462   hdfs  189u  IPv4  182815      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node104.yinzhengjie.org.cn:44344 (ESTABLISHED)
    java       9462   hdfs  190u  IPv4 3590017      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:47792 (ESTABLISHED)
    java       9462   hdfs  191u  IPv4 3590019      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:47794 (ESTABLISHED)
    java       9462   hdfs  192u  IPv4 3590021      0t0  TCP node105.yinzhengjie.org.cn:45754->node102.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  193u  IPv4 3593418      0t0  TCP node105.yinzhengjie.org.cn:51348->node104.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  200u  IPv4 3469249      0t0  TCP node105.yinzhengjie.org.cn:52462->node103.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  206u  IPv4  154451      0t0  TCP node105.yinzhengjie.org.cn:oa-system (LISTEN)
    java       9462   hdfs  216u  IPv4  154455      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc (LISTEN)
    java       9462   hdfs  226u  IPv4 3590023      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:47802 (ESTABLISHED)
    java       9462   hdfs  227u  IPv4  153372      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node105.yinzhengjie.org.cn:40886 (ESTABLISHED)
    java       9462   hdfs  230u  IPv4  170452      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node102.yinzhengjie.org.cn:60652 (ESTABLISHED)
    java       9464 httpfs   44u  IPv4  176699      0t0  TCP *:scotty-ft (LISTEN)
    java       9464 httpfs   46u  IPv4  176706      0t0  TCP localhost:sua (LISTEN)
    java       9466   hdfs  164u  IPv4  171473      0t0  TCP node105.yinzhengjie.org.cn:40886->node105.yinzhengjie.org.cn:oa-system (ESTABLISHED)
    java       9466   hdfs  169u  IPv4  178201      0t0  TCP node105.yinzhengjie.org.cn:qbdb (LISTEN)
    java       9466   hdfs  192u  IPv4  417868      0t0  TCP node105.yinzhengjie.org.cn:34984->node103.yinzhengjie.org.cn:eforward (ESTABLISHED)
    java       9466   hdfs  193u  IPv4  179462      0t0  TCP node105.yinzhengjie.org.cn:46080->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  142u  IPv4  178228      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client (LISTEN)
    java      10309 mapred  153u  IPv4  180271      0t0  TCP node105.yinzhengjie.org.cn:46154->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  155u  IPv4  178238      0t0  TCP *:50030 (LISTEN)
    java      10309 mapred  165u  IPv4 3575463      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node101.yinzhengjie.org.cn:57368 (ESTABLISHED)
    java      10309 mapred  169u  IPv4  179715      0t0  TCP node105.yinzhengjie.org.cn:9290 (LISTEN)
    java      10309 mapred  170u  IPv4  178474      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node104.yinzhengjie.org.cn:57478 (ESTABLISHED)
    java      10309 mapred  171u  IPv4  180281      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node103.yinzhengjie.org.cn:45932 (ESTABLISHED)
    java      10309 mapred  172u  IPv4  178475      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node102.yinzhengjie.org.cn:42866 (ESTABLISHED)
    java      10339   yarn  161u  IPv4  173527      0t0  TCP node105.yinzhengjie.org.cn:46150->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10339   yarn  177u  IPv4  156862      0t0  TCP node105.yinzhengjie.org.cn:8031 (LISTEN)
    java      10339   yarn  188u  IPv4  170464      0t0  TCP node105.yinzhengjie.org.cn:8030 (LISTEN)
    java      10339   yarn  198u  IPv4  173531      0t0  TCP node105.yinzhengjie.org.cn:pro-ed (LISTEN)
    java      10339   yarn  208u  IPv4  108344      0t0  TCP node105.yinzhengjie.org.cn:radan-http (LISTEN)
    java      10339   yarn  212u  IPv4  154480      0t0  TCP node105.yinzhengjie.org.cn:mindprint (LISTEN)
    java      10339   yarn  222u  IPv4  169567      0t0  TCP node105.yinzhengjie.org.cn:8031->node102.yinzhengjie.org.cn:55818 (ESTABLISHED)
    java      10339   yarn  223u  IPv4  172682      0t0  TCP node105.yinzhengjie.org.cn:8031->node103.yinzhengjie.org.cn:51108 (ESTABLISHED)
    java      10339   yarn  224u  IPv4  190392      0t0  TCP node105.yinzhengjie.org.cn:8031->node104.yinzhengjie.org.cn:34546 (ESTABLISHED)
    java      10367 mapred  180u  IPv4  181286      0t0  TCP node105.yinzhengjie.org.cn:10033 (LISTEN)
    java      10367 mapred  191u  IPv4  171536      0t0  TCP node105.yinzhengjie.org.cn:19888 (LISTEN)
    java      10367 mapred  195u  IPv4  169563      0t0  TCP node105.yinzhengjie.org.cn:10020 (LISTEN)
    java      10367 mapred  208u  IPv4 3469251      0t0  TCP node105.yinzhengjie.org.cn:47802->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      10367 mapred  211u  IPv4  171800      0t0  TCP node105.yinzhengjie.org.cn:46856->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      11052  spark  342u  IPv4 3569661      0t0  TCP node105.yinzhengjie.org.cn:47794->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      11052  spark  347u  IPv4  169631      0t0  TCP *:18088 (LISTEN)
    java      11054  spark  292u  IPv4 3586910      0t0  TCP node105.yinzhengjie.org.cn:47792->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      11054  spark  297u  IPv4  178539      0t0  TCP *:18089 (LISTEN)
    httpd     26141 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    sshd      27132   root    3u  IPv4 2554221      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:44284 (ESTABLISHED)
    httpd     31657 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd     32298 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -iTCP |wc -l
    114
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -iTCP                                #仅显示TCP信息
    [root@yinzhengjie ~]# lsof -iUDP 
    COMMAND    PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
    chronyd    881 chrony    1u  IPv4  29047      0t0  UDP localhost:323 
    chronyd    881 chrony    2u  IPv6  29048      0t0  UDP localhost:323 
    python2.7 8605   root   12u  IPv4 165875      0t0  UDP *:7191 
    python2.7 8605   root   13u  IPv6 165877      0t0  UDP *:7191 
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -iUDP | wc -l
    5
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -iUDP [root@yinzhengjie ~]# lsof -iUDP            #仅显示UDP信息

    8>.显示与指定端口相关的网络信息

    [root@yinzhengjie ~]# lsof -i:50070
    COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
    java    9462 hdfs  173u  IPv4 179459      0t0  TCP node105.yinzhengjie.org.cn:50070 (LISTEN)
    [root@yinzhengjie ~]#  

    9>.显示指定到指定主机的连接  

    [root@yinzhengjie ~]# lsof -i@node101.yinzhengjie.org.cn
    COMMAND     PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
    cmf-agent  8393   root   13u  IPv4  159710      0t0  TCP node105.yinzhengjie.org.cn:57772->node101.yinzhengjie.org.cn:7182 (ESTABLISHED)
    cmf-agent  8393   root   15u  IPv4  176648      0t0  TCP node105.yinzhengjie.org.cn:59654->node101.yinzhengjie.org.cn:palace-4 (ESTABLISHED)
    cmf-agent  8393   root   16u  IPv4  173508      0t0  TCP node105.yinzhengjie.org.cn:34906->node101.yinzhengjie.org.cn:palace-6 (ESTABLISHED)
    java       9462   hdfs  179u  IPv4  177481      0t0  TCP node105.yinzhengjie.org.cn:46074->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java       9466   hdfs  193u  IPv4  179462      0t0  TCP node105.yinzhengjie.org.cn:46080->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  153u  IPv4  180271      0t0  TCP node105.yinzhengjie.org.cn:46154->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10339   yarn  161u  IPv4  173527      0t0  TCP node105.yinzhengjie.org.cn:46150->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10339   yarn  225u  IPv4 3545042      0t0  TCP node105.yinzhengjie.org.cn:radan-http->node101.yinzhengjie.org.cn:54826 (ESTABLISHED)
    java      10367 mapred  175u  IPv4 3556015      0t0  TCP node105.yinzhengjie.org.cn:19888->node101.yinzhengjie.org.cn:36534 (ESTABLISHED)
    java      10367 mapred  211u  IPv4  171800      0t0  TCP node105.yinzhengjie.org.cn:46856->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    [root@yinzhengjie ~]# 

    10>.找出正在等候链接的端口

    [root@yinzhengjie ~]# lsof -i -sTCP:LISTEN
    COMMAND     PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
    httpd       505 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    sshd       1108   root    3u  IPv4  25711      0t0  TCP *:ssh (LISTEN)
    sshd       1108   root    4u  IPv6  25713      0t0  TCP *:ssh (LISTEN)
    httpd      1119   root    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    zabbix_ag  1176 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1179 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1180 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1181 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1182 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1183 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1184 zabbix    4u  IPv4  13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_se  1435 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    mysqld     1461  mysql   13u  IPv6  32852      0t0  TCP *:mysql (LISTEN)
    httpd      1536 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    master     1545   root   13u  IPv4  32802      0t0  TCP localhost:smtp (LISTEN)
    master     1545   root   14u  IPv6  32803      0t0  TCP localhost:smtp (LISTEN)
    zabbix_se  1856 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1857 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1858 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1859 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1860 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1861 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1862 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1863 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1864 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1865 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1867 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1868 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1871 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1873 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1874 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1876 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1877 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1878 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1880 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1882 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1883 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1885 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1887 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1889 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1891 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1893 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1895 zabbix    5u  IPv4  19765      0t0  TCP *:zabbix-trapper (LISTEN)
    httpd      2285 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      2614 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      2946 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      3275 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd      3599 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    cmf-agent  8393   root   12u  IPv4 158126      0t0  TCP node105.yinzhengjie.org.cn:cslistener (LISTEN)
    python     8410   root    4u  IPv4 153210      0t0  TCP localhost:19001 (LISTEN)
    python2.7  8605   root    7u  IPv4 165868      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root    8u  IPv4 165869      0t0  TCP *:vop (LISTEN)
    python2.7  8605   root   10u  IPv6 165871      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root   11u  IPv6 165872      0t0  TCP *:4434 (LISTEN)
    python2.7  8605   root   14u  IPv4 172336      0t0  TCP localhost:7190 (LISTEN)
    java       9462   hdfs  173u  IPv4 179459      0t0  TCP node105.yinzhengjie.org.cn:50070 (LISTEN)
    java       9462   hdfs  206u  IPv4 154451      0t0  TCP node105.yinzhengjie.org.cn:oa-system (LISTEN)
    java       9462   hdfs  216u  IPv4 154455      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc (LISTEN)
    java       9464 httpfs   44u  IPv4 176699      0t0  TCP *:scotty-ft (LISTEN)
    java       9464 httpfs   46u  IPv4 176706      0t0  TCP localhost:sua (LISTEN)
    java       9466   hdfs  169u  IPv4 178201      0t0  TCP node105.yinzhengjie.org.cn:qbdb (LISTEN)
    java      10309 mapred  142u  IPv4 178228      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client (LISTEN)
    java      10309 mapred  155u  IPv4 178238      0t0  TCP *:50030 (LISTEN)
    java      10309 mapred  169u  IPv4 179715      0t0  TCP node105.yinzhengjie.org.cn:9290 (LISTEN)
    java      10339   yarn  177u  IPv4 156862      0t0  TCP node105.yinzhengjie.org.cn:8031 (LISTEN)
    java      10339   yarn  188u  IPv4 170464      0t0  TCP node105.yinzhengjie.org.cn:8030 (LISTEN)
    java      10339   yarn  198u  IPv4 173531      0t0  TCP node105.yinzhengjie.org.cn:pro-ed (LISTEN)
    java      10339   yarn  208u  IPv4 108344      0t0  TCP node105.yinzhengjie.org.cn:radan-http (LISTEN)
    java      10339   yarn  212u  IPv4 154480      0t0  TCP node105.yinzhengjie.org.cn:mindprint (LISTEN)
    java      10367 mapred  180u  IPv4 181286      0t0  TCP node105.yinzhengjie.org.cn:10033 (LISTEN)
    java      10367 mapred  191u  IPv4 171536      0t0  TCP node105.yinzhengjie.org.cn:19888 (LISTEN)
    java      10367 mapred  195u  IPv4 169563      0t0  TCP node105.yinzhengjie.org.cn:10020 (LISTEN)
    java      11052  spark  347u  IPv4 169631      0t0  TCP *:18088 (LISTEN)
    java      11054  spark  297u  IPv4 178539      0t0  TCP *:18089 (LISTEN)
    httpd     26141 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd     31657 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    httpd     32298 apache    4u  IPv6  25731      0t0  TCP *:http (LISTEN)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i -sTCP:LISTEN | wc -l
    78
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i -sTCP:LISTEN
    [root@yinzhengjie ~]# lsof -i | grep -i LISTEN
    httpd       505 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    sshd       1108   root    3u  IPv4   25711      0t0  TCP *:ssh (LISTEN)
    sshd       1108   root    4u  IPv6   25713      0t0  TCP *:ssh (LISTEN)
    httpd      1119   root    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    zabbix_ag  1176 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1179 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1180 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1181 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1182 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1183 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_ag  1184 zabbix    4u  IPv4   13863      0t0  TCP *:zabbix-agent (LISTEN)
    zabbix_se  1435 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    mysqld     1461  mysql   13u  IPv6   32852      0t0  TCP *:mysql (LISTEN)
    httpd      1536 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    master     1545   root   13u  IPv4   32802      0t0  TCP localhost:smtp (LISTEN)
    master     1545   root   14u  IPv6   32803      0t0  TCP localhost:smtp (LISTEN)
    zabbix_se  1856 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1857 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1858 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1859 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1860 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1861 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1862 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1863 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1864 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1865 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1867 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1868 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1871 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1873 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1874 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1876 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1877 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1878 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1880 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1882 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1883 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1885 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1887 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1889 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1891 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1893 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    zabbix_se  1895 zabbix    5u  IPv4   19765      0t0  TCP *:zabbix-trapper (LISTEN)
    httpd      2285 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      2614 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      2946 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      3275 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd      3599 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    cmf-agent  8393   root   12u  IPv4  158126      0t0  TCP node105.yinzhengjie.org.cn:cslistener (LISTEN)
    python     8410   root    4u  IPv4  153210      0t0  TCP localhost:19001 (LISTEN)
    python2.7  8605   root    7u  IPv4  165868      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root    8u  IPv4  165869      0t0  TCP *:vop (LISTEN)
    python2.7  8605   root   10u  IPv6  165871      0t0  TCP *:7191 (LISTEN)
    python2.7  8605   root   11u  IPv6  165872      0t0  TCP *:4434 (LISTEN)
    python2.7  8605   root   14u  IPv4  172336      0t0  TCP localhost:7190 (LISTEN)
    java       9462   hdfs  173u  IPv4  179459      0t0  TCP node105.yinzhengjie.org.cn:50070 (LISTEN)
    java       9462   hdfs  206u  IPv4  154451      0t0  TCP node105.yinzhengjie.org.cn:oa-system (LISTEN)
    java       9462   hdfs  216u  IPv4  154455      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc (LISTEN)
    java       9464 httpfs   44u  IPv4  176699      0t0  TCP *:scotty-ft (LISTEN)
    java       9464 httpfs   46u  IPv4  176706      0t0  TCP localhost:sua (LISTEN)
    java       9466   hdfs  169u  IPv4  178201      0t0  TCP node105.yinzhengjie.org.cn:qbdb (LISTEN)
    java      10309 mapred  142u  IPv4  178228      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client (LISTEN)
    java      10309 mapred  155u  IPv4  178238      0t0  TCP *:50030 (LISTEN)
    java      10309 mapred  169u  IPv4  179715      0t0  TCP node105.yinzhengjie.org.cn:9290 (LISTEN)
    java      10339   yarn  177u  IPv4  156862      0t0  TCP node105.yinzhengjie.org.cn:8031 (LISTEN)
    java      10339   yarn  188u  IPv4  170464      0t0  TCP node105.yinzhengjie.org.cn:8030 (LISTEN)
    java      10339   yarn  198u  IPv4  173531      0t0  TCP node105.yinzhengjie.org.cn:pro-ed (LISTEN)
    java      10339   yarn  208u  IPv4  108344      0t0  TCP node105.yinzhengjie.org.cn:radan-http (LISTEN)
    java      10339   yarn  212u  IPv4  154480      0t0  TCP node105.yinzhengjie.org.cn:mindprint (LISTEN)
    java      10367 mapred  180u  IPv4  181286      0t0  TCP node105.yinzhengjie.org.cn:10033 (LISTEN)
    java      10367 mapred  191u  IPv4  171536      0t0  TCP node105.yinzhengjie.org.cn:19888 (LISTEN)
    java      10367 mapred  195u  IPv4  169563      0t0  TCP node105.yinzhengjie.org.cn:10020 (LISTEN)
    java      11052  spark  347u  IPv4  169631      0t0  TCP *:18088 (LISTEN)
    java      11054  spark  297u  IPv4  178539      0t0  TCP *:18089 (LISTEN)
    httpd     26141 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd     31657 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    httpd     32298 apache    4u  IPv6   25731      0t0  TCP *:http (LISTEN)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i | grep -i LISTEN | wc -l
    77
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i | grep -i LISTEN

    11>.找出已经建立链接的端口

    [root@yinzhengjie ~]# lsof -i -sTCP:ESTABLISHED
    COMMAND     PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
    mysqld     1461  mysql   86u  IPv6   10121      0t0  TCP node105.yinzhengjie.org.cn:mysql->10.19.104.189:45260 (ESTABLISHED)
    sshd       7361   root    3u  IPv4 2534674      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:60030 (ESTABLISHED)
    cmf-agent  8393   root    8u  IPv4  153213      0t0  TCP localhost:41146->localhost:19001 (ESTABLISHED)
    cmf-agent  8393   root   13u  IPv4  159710      0t0  TCP node105.yinzhengjie.org.cn:57772->node101.yinzhengjie.org.cn:7182 (ESTABLISHED)
    cmf-agent  8393   root   15u  IPv4  176648      0t0  TCP node105.yinzhengjie.org.cn:59654->node101.yinzhengjie.org.cn:palace-4 (ESTABLISHED)
    cmf-agent  8393   root   16u  IPv4  173508      0t0  TCP node105.yinzhengjie.org.cn:34906->node101.yinzhengjie.org.cn:palace-6 (ESTABLISHED)
    python     8410   root    6u  IPv4  151318      0t0  TCP localhost:19001->localhost:41146 (ESTABLISHED)
    java       9462   hdfs  179u  IPv4  177481      0t0  TCP node105.yinzhengjie.org.cn:46074->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java       9462   hdfs  180u  IPv4  190539      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node103.yinzhengjie.org.cn:58068 (ESTABLISHED)
    java       9462   hdfs  189u  IPv4  182815      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node104.yinzhengjie.org.cn:44344 (ESTABLISHED)
    java       9462   hdfs  190u  IPv4 3597389      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:48360 (ESTABLISHED)
    java       9462   hdfs  191u  IPv4 3597391      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:48362 (ESTABLISHED)
    java       9462   hdfs  192u  IPv4 3382898      0t0  TCP node105.yinzhengjie.org.cn:46322->node102.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  193u  IPv4 3587004      0t0  TCP node105.yinzhengjie.org.cn:53028->node103.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  196u  IPv4 3597393      0t0  TCP node105.yinzhengjie.org.cn:51918->node104.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  226u  IPv4 3597385      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:48358 (ESTABLISHED)
    java       9462   hdfs  227u  IPv4  153372      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node105.yinzhengjie.org.cn:40886 (ESTABLISHED)
    java       9462   hdfs  230u  IPv4  170452      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node102.yinzhengjie.org.cn:60652 (ESTABLISHED)
    java       9466   hdfs  164u  IPv4  171473      0t0  TCP node105.yinzhengjie.org.cn:40886->node105.yinzhengjie.org.cn:oa-system (ESTABLISHED)
    java       9466   hdfs  192u  IPv4  417868      0t0  TCP node105.yinzhengjie.org.cn:34984->node103.yinzhengjie.org.cn:eforward (ESTABLISHED)
    java       9466   hdfs  193u  IPv4  179462      0t0  TCP node105.yinzhengjie.org.cn:46080->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  153u  IPv4  180271      0t0  TCP node105.yinzhengjie.org.cn:46154->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  170u  IPv4  178474      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node104.yinzhengjie.org.cn:57478 (ESTABLISHED)
    java      10309 mapred  171u  IPv4  180281      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node103.yinzhengjie.org.cn:45932 (ESTABLISHED)
    java      10309 mapred  172u  IPv4  178475      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node102.yinzhengjie.org.cn:42866 (ESTABLISHED)
    java      10339   yarn  161u  IPv4  173527      0t0  TCP node105.yinzhengjie.org.cn:46150->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10339   yarn  222u  IPv4  169567      0t0  TCP node105.yinzhengjie.org.cn:8031->node102.yinzhengjie.org.cn:55818 (ESTABLISHED)
    java      10339   yarn  223u  IPv4  172682      0t0  TCP node105.yinzhengjie.org.cn:8031->node103.yinzhengjie.org.cn:51108 (ESTABLISHED)
    java      10339   yarn  224u  IPv4  190392      0t0  TCP node105.yinzhengjie.org.cn:8031->node104.yinzhengjie.org.cn:34546 (ESTABLISHED)
    java      10367 mapred  208u  IPv4 3596338      0t0  TCP node105.yinzhengjie.org.cn:48358->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      10367 mapred  211u  IPv4  171800      0t0  TCP node105.yinzhengjie.org.cn:46856->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      11052  spark  342u  IPv4 3599397      0t0  TCP node105.yinzhengjie.org.cn:48360->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      11054  spark  292u  IPv4 3558228      0t0  TCP node105.yinzhengjie.org.cn:48362->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    sshd      27132   root    3u  IPv4 2554221      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:44284 (ESTABLISHED)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i -sTCP:ESTABLISHED | wc -l
    34
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i -sTCP:ESTABLISHED
    [root@yinzhengjie ~]# lsof -i -sTCP:ESTABLISHED | grep ESTABLISHED
    mysqld     1461  mysql   86u  IPv6   10121      0t0  TCP node105.yinzhengjie.org.cn:mysql->10.19.104.189:45260 (ESTABLISHED)
    sshd       7361   root    3u  IPv4 2534674      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:60030 (ESTABLISHED)
    cmf-agent  8393   root    8u  IPv4  153213      0t0  TCP localhost:41146->localhost:19001 (ESTABLISHED)
    cmf-agent  8393   root   13u  IPv4  159710      0t0  TCP node105.yinzhengjie.org.cn:57772->node101.yinzhengjie.org.cn:7182 (ESTABLISHED)
    cmf-agent  8393   root   15u  IPv4  176648      0t0  TCP node105.yinzhengjie.org.cn:59654->node101.yinzhengjie.org.cn:palace-4 (ESTABLISHED)
    cmf-agent  8393   root   16u  IPv4  173508      0t0  TCP node105.yinzhengjie.org.cn:34906->node101.yinzhengjie.org.cn:palace-6 (ESTABLISHED)
    python     8410   root    6u  IPv4  151318      0t0  TCP localhost:19001->localhost:41146 (ESTABLISHED)
    java       9462   hdfs  179u  IPv4  177481      0t0  TCP node105.yinzhengjie.org.cn:46074->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java       9462   hdfs  180u  IPv4  190539      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node103.yinzhengjie.org.cn:58068 (ESTABLISHED)
    java       9462   hdfs  189u  IPv4  182815      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node104.yinzhengjie.org.cn:44344 (ESTABLISHED)
    java       9462   hdfs  190u  IPv4 3587012      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:48404 (ESTABLISHED)
    java       9462   hdfs  191u  IPv4 3587014      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-svcdisc->node105.yinzhengjie.org.cn:48406 (ESTABLISHED)
    java       9462   hdfs  192u  IPv4 3382899      0t0  TCP node105.yinzhengjie.org.cn:53070->node103.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  193u  IPv4 3599403      0t0  TCP node105.yinzhengjie.org.cn:46368->node102.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  194u  IPv4 3574011      0t0  TCP node105.yinzhengjie.org.cn:51962->node104.yinzhengjie.org.cn:8485 (ESTABLISHED)
    java       9462   hdfs  227u  IPv4  153372      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node105.yinzhengjie.org.cn:40886 (ESTABLISHED)
    java       9462   hdfs  230u  IPv4  170452      0t0  TCP node105.yinzhengjie.org.cn:oa-system->node102.yinzhengjie.org.cn:60652 (ESTABLISHED)
    java       9466   hdfs  164u  IPv4  171473      0t0  TCP node105.yinzhengjie.org.cn:40886->node105.yinzhengjie.org.cn:oa-system (ESTABLISHED)
    java       9466   hdfs  192u  IPv4  417868      0t0  TCP node105.yinzhengjie.org.cn:34984->node103.yinzhengjie.org.cn:eforward (ESTABLISHED)
    java       9466   hdfs  193u  IPv4  179462      0t0  TCP node105.yinzhengjie.org.cn:46080->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  153u  IPv4  180271      0t0  TCP node105.yinzhengjie.org.cn:46154->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10309 mapred  170u  IPv4  178474      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node104.yinzhengjie.org.cn:57478 (ESTABLISHED)
    java      10309 mapred  171u  IPv4  180281      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node103.yinzhengjie.org.cn:45932 (ESTABLISHED)
    java      10309 mapred  172u  IPv4  178475      0t0  TCP node105.yinzhengjie.org.cn:intu-ec-client->node102.yinzhengjie.org.cn:42866 (ESTABLISHED)
    java      10339   yarn  161u  IPv4  173527      0t0  TCP node105.yinzhengjie.org.cn:46150->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      10339   yarn  222u  IPv4  169567      0t0  TCP node105.yinzhengjie.org.cn:8031->node102.yinzhengjie.org.cn:55818 (ESTABLISHED)
    java      10339   yarn  223u  IPv4  172682      0t0  TCP node105.yinzhengjie.org.cn:8031->node103.yinzhengjie.org.cn:51108 (ESTABLISHED)
    java      10339   yarn  224u  IPv4  190392      0t0  TCP node105.yinzhengjie.org.cn:8031->node104.yinzhengjie.org.cn:34546 (ESTABLISHED)
    java      10367 mapred  211u  IPv4  171800      0t0  TCP node105.yinzhengjie.org.cn:46856->node101.yinzhengjie.org.cn:7184 (ESTABLISHED)
    java      11052  spark  342u  IPv4 3481586      0t0  TCP node105.yinzhengjie.org.cn:48404->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    java      11054  spark  292u  IPv4 3558234      0t0  TCP node105.yinzhengjie.org.cn:48406->node105.yinzhengjie.org.cn:intu-ec-svcdisc (ESTABLISHED)
    sshd      27132   root    3u  IPv4 2554221      0t0  TCP node105.yinzhengjie.org.cn:ssh->10.19.104.189:44284 (ESTABLISHED)
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i -sTCP:ESTABLISHED | grep ESTABLISHED | wc -l
    36
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -i -sTCP:ESTABLISHED | grep ESTABLISHED

    12>.查看某个进程打开的文件句柄

    [root@yinzhengjie ~]# jps
    10339 ResourceManager
    10309 JobTracker
    9462 NameNode
    9464 Bootstrap
    9466 DFSZKFailoverController
    23723 Jps
    11052 HistoryServer
    11054 HistoryServer
    10367 JobHistoryServer
    [root@yinzhengjie ~]# 
    [root@yinzhengjie ~]# lsof -p 10339 | wc -l
    419
    [root@yinzhengjie ~]# 

       我在实际工作中能用到的参数也就是上面这些了,其他的都不咋常用。lsof的功能可不止这些哟~不知道大家观察到我在一开始贴出来的lsof的帮助信息没有?那里面记录着很多参数,感兴趣的小伙伴可以仔细研究一下~

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  • 原文地址:https://www.cnblogs.com/yinzhengjie/p/10004042.html
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