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  • 日常运维管理 常用命令(3)

    查看定时任务

    [root@tyzz ~]# crontab -l
    #secu-tcs-agent monitor, install at Tue Feb 14 11:57:11 CST 2017
    * * * * * /usr/local/sa/agent/secu-tcs-agent-mon-safe.sh /usr/local/sa/agent > /dev/null 2>&1
    */1 * * * * /usr/local/qcloud/stargate/admin/start.sh > /dev/null 2>&1 &
    */20 * * * * /usr/sbin/ntpdate ntpupdate.tencentyun.com >/dev/null &
    [root@tyzz ~]# crontab -u test1 -l
    no crontab for test1

    编辑

    [root@tyzz ~]# crontab -e
    分 时 日 月 周  所要执行的操作

    图形化管理系统服务

    ntsysv

    chkconfig

    [root@tyzz cron]# chkconfig --list
    
    Note: This output shows SysV services only and does not include native
          systemd services. SysV configuration data might be overridden by native
          systemd configuration.
    
          If you want to list systemd services use 'systemctl list-unit-files'.
          To see services enabled on particular target use
          'systemctl list-dependencies [target]'.
    
    iprdump            0:off    1:off    2:on    3:on    4:on    5:on    6:off
    iprinit            0:off    1:off    2:on    3:on    4:on    5:on    6:off
    iprupdate          0:off    1:off    2:on    3:on    4:on    5:on    6:off
    netconsole         0:off    1:off    2:off    3:off    4:off    5:off    6:off
    network            0:off    1:off    2:on    3:on    4:on    5:on    6:off
    [root@tyzz cron]#
    6系:[root@tyzz cron]# chkconfig httpd on
    
    7系:[root@tyzz cron]# systemctl enable httpd
    [root@tyzz log]# pwd
    /var/log
    [root@tyzz log]# ls
    anaconda  boot.log  btmp-20170301  cron   dmesg.old  lastlog  mariadb   ppp     spooler   tuned  yum.log
    audit     btmp      chrony         dmesg  httpd      maillog  ntpstats  puppet  tallylog  wtmp
    [root@tyzz log]#

    dmesg 查看硬件相关的故障日志 (磁盘 网卡)

    exex用法
    [root@tyzz log]# find /var/log/ -type f -mtime +10 -exec cp {} {}.bak ;

    screen 命令

    [root@tyzz ~]# screen     #进入
    
    ctrl a+d  推出(打入后台)
    exit 完全退出
    
    [root@tyzz ~]# screen -ls   #开启了的 screen
    There are screens on:
        20549.pts-1.tyzz    (Detached)
        20476.pts-1.tyzz    (Detached)
    2 Sockets in /var/run/screen/S-root.
    
    [root@tyzz ~]# screen -r 20549   #进入相关的screen

    curl

    [root@tyzz ~]# curl -x 220.181.111.188:80 -I www.baidu.com
    HTTP/1.1 200 OK
    Date: Wed, 01 Mar 2017 09:32:49 GMT
    Server: Apache
    P3P: CP=" OTI DSP COR IVA OUR IND COM "
    P3P: CP=" OTI DSP COR IVA OUR IND COM "
    Set-Cookie: BAIDUID=A35A0983905AF6C7FF97A5F979D31A17:FG=1; expires=Thu, 01-Mar-18 09:32:49 GMT; max-age=31536000; path=/; domain=.baidu.com; version=1
    Set-Cookie: BAIDUID=A35A0983905AF6C741F47F4511D32D76:FG=1; expires=Thu, 01-Mar-18 09:32:49 GMT; max-age=31536000; path=/; domain=.baidu.com; version=1
    Last-Modified: Wed, 08 Feb 2017 07:55:35 GMT
    ETag: "1cd6-5480030886bc0"
    Accept-Ranges: bytes
    Content-Length: 7382
    Cache-Control: max-age=1
    Expires: Wed, 01 Mar 2017 09:32:50 GMT
    Vary: Accept-Encoding,User-Agent
    Connection: Keep-Alive
    Content-Type: text/html
    
    [root@tyzz ~]# curl -Iv www.baidu.com
    * About to connect() to www.baidu.com port 80 (#0)
    *   Trying 220.181.112.244...
    * Connected to www.baidu.com (220.181.112.244) port 80 (#0)
    > HEAD / HTTP/1.1
    > User-Agent: curl/7.29.0
    > Host: www.baidu.com
    > Accept: */*
    > 
    < HTTP/1.1 200 OK
    HTTP/1.1 200 OK
    < Server: bfe/1.0.8.18
    Server: bfe/1.0.8.18
    < Date: Wed, 01 Mar 2017 09:36:36 GMT
    Date: Wed, 01 Mar 2017 09:36:36 GMT
    < Content-Type: text/html
    Content-Type: text/html
    < Content-Length: 277
    Content-Length: 277
    < Last-Modified: Mon, 13 Jun 2016 02:50:06 GMT
    Last-Modified: Mon, 13 Jun 2016 02:50:06 GMT
    < Connection: Keep-Alive
    Connection: Keep-Alive
    < ETag: "575e1f5e-115"
    ETag: "575e1f5e-115"
    < Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
    Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
    < Pragma: no-cache
    Pragma: no-cache
    < Accept-Ranges: bytes
    Accept-Ranges: bytes
    
    < 
    * Connection #0 to host www.baidu.com left intact
    [root@tyzz ~]# curl -O https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png
      % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                     Dload  Upload   Total   Spent    Left  Speed
    100  3706  100  3706    0     0  14378      0 --:--:-- --:--:-- --:--:-- 14364

    -I 不显示html内容

    -x 指定ip和端口

    -v 显示过程

    -O 下载

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  • 原文地址:https://www.cnblogs.com/aallenn/p/6700579.html
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