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  • 学习linux基本命令

    • ls命令运行结果:
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~# ls
    result.csv  result_gip.csv  result_gzip.csv  urls.txt
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~# cd ..
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/# ls
    bin   etc         initrd.img.old  lost+found  opt   run   sys      usr      vmlinuz.old
    boot  home        lib             media       proc  sbin  testing  var
    dev   initrd.img  lib64           mnt         root  srv   tmp      vmlinuz
    
    • cd命令运行结果:
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~# cd ..
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/# ls
    bin   etc         initrd.img.old  lost+found  opt   run   sys      usr      vmlinuz.old
    boot  home        lib             media       proc  sbin  testing  var
    dev   initrd.img  lib64           mnt         root  srv   tmp      vmlinuz
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/# cd bin
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/bin#
    
    • mkdir运行结果:
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/# cd tmp
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/tmp# ls
    Aegis-<Guid(5A2C30A2-A87D-490A-9281-6765EDAD7CBA)>
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/tmp# mkdir shj_test
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/tmp# ls
    Aegis-<Guid(5A2C30A2-A87D-490A-9281-6765EDAD7CBA)>  shj_test
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/tmp# rm -rf shj_test
    root@iZ2ze0ht45qn4m8m1wjfdrZ:/tmp# ls
    Aegis-<Guid(5A2C30A2-A87D-490A-9281-6765EDAD7CBA)>
    
    • grep
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# ls
    urls.txt
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# cat urls.txt
    http://ur.tencent.com/categories/7
    http://ur.tencent.com/categories/7/?page=2
    http://ur.tencent.com/categories/7/?page=3
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# grep -i HTTP urls.txt
    http://ur.tencent.com/categories/7
    http://ur.tencent.com/categories/7/?page=2
    http://ur.tencent.com/categories/7/?page=3
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# 
    
    • ps aux
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~# ps aux
    USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
    root         1  0.0  0.5  37808  5940 ?        Ss   Mar23   0:03 /sbin/init
    root         2  0.0  0.0      0     0 ?        S    Mar23   0:00 [kthreadd]
    root         3  0.0  0.0      0     0 ?        S    Mar23   0:02 [ksoftirqd/0]
    root         5  0.0  0.0      0     0 ?        S<   Mar23   0:00 [kworker/0:0H]
    root         6  0.0  0.0      0     0 ?        S    Mar23   0:06 [kworker/u2:0]
    root         7  0.0  0.0      0     0 ?        S    Mar23   0:37 [rcu_sched]
    root         8  0.0  0.0      0     0 ?        S    Mar23   0:00 [rcu_bh]
    root         9  0.0  0.0      0     0 ?        S    Mar23   0:00 [migration/0]
    root        10  0.0  0.0      0     0 ?        S    Mar23   0:03 [watchdog/0]
    root        11  0.0  0.0      0     0 ?        S    Mar23   0:00 [kdevtmpfs]
    root        12  0.0  0.0      0     0 ?        S<   Mar23   0:00 [netns]
    root        13  0.0  0.0      0     0 ?        S<   Mar23   0:00 [perf]
    root        14  0.0  0.0      0     0 ?        S    Mar23   0:00 [khungtaskd]
    root        15  0.0  0.0      0     0 ?        S<   Mar23   0:00 [writeback]
    root        16  0.0  0.0      0     0 ?        SN   Mar23   0:00 [ksmd]
    root        17  0.0  0.0      0     0 ?        SN   Mar23   0:03 [khugepaged]
    root        18  0.0  0.0      0     0 ?        S<   Mar23   0:00 [crypto]
    root        19  0.0  0.0      0     0 ?        S<   Mar23   0:00 [kintegrityd]
    root        20  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        21  0.0  0.0      0     0 ?        S<   Mar23   0:00 [kblockd]
    root        22  0.0  0.0      0     0 ?        S<   Mar23   0:00 [ata_sff]
    root        23  0.0  0.0      0     0 ?        S<   Mar23   0:00 [md]
    root        24  0.0  0.0      0     0 ?        S<   Mar23   0:00 [devfreq_wq]
    root        25  0.0  0.0      0     0 ?        S    Mar23   0:06 [kworker/u2:1]
    root        28  0.0  0.0      0     0 ?        S    Mar23   0:00 [kswapd0]
    root        29  0.0  0.0      0     0 ?        S<   Mar23   0:00 [vmstat]
    root        30  0.0  0.0      0     0 ?        S    Mar23   0:00 [fsnotify_mark]
    root        31  0.0  0.0      0     0 ?        S    Mar23   0:00 [ecryptfs-kthre
    root        47  0.0  0.0      0     0 ?        S<   Mar23   0:00 [kthrotld]
    root        48  0.0  0.0      0     0 ?        S<   Mar23   0:00 [acpi_thermal_p
    root        49  0.0  0.0      0     0 ?        S    Mar23   0:00 [vballoon]
    root        50  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        51  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        52  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        53  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        54  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        55  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        56  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        57  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        58  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root        59  0.0  0.0      0     0 ?        S    Mar23   0:00 [scsi_eh_0]
    root        60  0.0  0.0      0     0 ?        S<   Mar23   0:00 [scsi_tmf_0]
    root        61  0.0  0.0      0     0 ?        S    Mar23   0:00 [scsi_eh_1]
    root        62  0.0  0.0      0     0 ?        S<   Mar23   0:00 [scsi_tmf_1]
    root        68  0.0  0.0      0     0 ?        S<   Mar23   0:00 [ipv6_addrconf]
    root        81  0.0  0.0      0     0 ?        S<   Mar23   0:00 [deferwq]
    root        82  0.0  0.0      0     0 ?        S<   Mar23   0:00 [charger_manage
    root       122  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       123  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       124  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       126  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       127  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       128  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       129  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       130  0.0  0.0      0     0 ?        S<   Mar23   0:00 [kpsmoused]
    root       131  0.0  0.0      0     0 ?        S<   Mar23   0:00 [bioset]
    root       132  0.0  0.0      0     0 ?        S<   Mar23   0:00 [ttm_swap]
    root       152  0.0  0.0      0     0 ?        S<   Mar23   0:00 [kworker/0:1H]
    root       154  0.0  0.0      0     0 ?        S    Mar23   0:00 [jbd2/vda1-8]
    root       155  0.0  0.0      0     0 ?        S<   Mar23   0:00 [ext4-rsv-conve
    root       197  0.0  0.2  28348  2732 ?        Ss   Mar23   0:01 /lib/systemd/sy
    root       205  0.0  0.0      0     0 ?        S    Mar23   0:00 [kauditd]
    root       236  0.0  0.3  44656  4064 ?        Ss   Mar23   0:00 /lib/systemd/sy
    root       387  0.0  0.2  20396  2712 ?        Ss   Mar23   0:00 /lib/systemd/sy
    daemon     388  0.0  0.2  26040  2252 ?        Ss   Mar23   0:00 /usr/sbin/atd -
    root       403  0.0  0.2  29004  3020 ?        Ss   Mar23   0:01 /usr/sbin/cron 
    message+   409  0.0  0.3  42896  3908 ?        Ss   Mar23   0:00 /usr/bin/dbus-d
    root       425  0.0  0.4  32060  4352 ?        Ssl  Mar23   7:53 /usr/local/aegi
    syslog     431  0.0  0.3 260624  3392 ?        Ssl  Mar23   0:00 /usr/sbin/rsysl
    root       434  0.0  0.6 276188  6248 ?        Ssl  Mar23   0:10 /usr/lib/accoun
    root       467  0.0  0.2 707112  2876 ?        Ssl  Mar23   0:01 /usr/sbin/nscd
    root       485  0.0  0.1  62744  1980 ?        Ssl  Mar23   0:48 /usr/sbin/aliyu
    root       612  0.0  0.0      0     0 ?        S<   Mar23   0:00 [edac-poller]
    ntp        795  0.0  0.3  98196  3848 ?        Ss   Mar23   0:38 /usr/sbin/ntpd 
    root       817  0.0  0.0   7512   712 ttyS0    Ss+  Mar23   0:00 /sbin/agetty --
    root       822  0.0  0.0   7696   668 tty1     Ss+  Mar23   0:00 /sbin/agetty --
    root       909  0.1  1.6 124876 16688 ?        Ssl  Mar23  21:21 /usr/local/aegi
    root      3029  0.0  0.5  59416  5888 ?        Ss   Mar25   0:00 /usr/sbin/sshd 
    root      3150  0.0  0.0      0     0 ?        S    Mar25   0:09 [kworker/0:1]
    root     10395  0.0  0.0      0     0 ?        S    09:12   0:00 [kworker/0:0]
    root     10469  0.0  0.6  93460  7004 ?        Ss   09:45   0:00 sshd: root@pts/
    root     10472  0.0  0.0      0     0 ?        S    09:45   0:00 [kworker/0:2]
    root     10473  0.0  0.4  36824  4632 ?        Ss   09:45   0:00 /lib/systemd/sy
    root     10474  0.0  0.1  61472  1996 ?        S    09:45   0:00 (sd-pam)
    root     10493  0.2  0.4  14004  4392 pts/0    Ss   09:45   0:00 -bash
    root     10506  0.0  0.1  29124  1492 pts/0    R+   09:45   0:00 ps aux
    
    • top命令运行结果:
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# top
    top - 10:07:36 up 10 days, 17:32,  1 user,  load average: 0.00, 0.00, 0.00
    Tasks:  87 total,   1 running,  84 sleeping,   2 stopped,   0 zombie
    %Cpu(s):  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    KiB Mem :  1016020 total,   624788 free,    33024 used,   358208 buff/cache
    KiB Swap:        0 total,        0 free,        0 used.   805396 avail Mem 
    
      PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND     
        1 root      20   0   37808   5940   4056 S  0.0  0.6   0:03.38 systemd     
        2 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kthreadd    
        3 root      20   0       0      0      0 S  0.0  0.0   0:02.25 ksoftirqd/0 
        5 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 kworker/0:0H
        6 root      20   0       0      0      0 S  0.0  0.0   0:06.20 kworker/u2:0
        7 root      20   0       0      0      0 S  0.0  0.0   0:37.19 rcu_sched   
        8 root      20   0       0      0      0 S  0.0  0.0   0:00.00 rcu_bh      
        9 root      rt   0       0      0      0 S  0.0  0.0   0:00.00 migration/0 
       10 root      rt   0       0      0      0 S  0.0  0.0   0:03.08 watchdog/0  
       11 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kdevtmpfs   
       12 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 netns       
       13 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 perf        
       14 root      20   0       0      0      0 S  0.0  0.0   0:00.19 khungtaskd  
       15 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 writeback   
       16 root      25   5       0      0      0 S  0.0  0.0   0:00.00 ksmd        
       17 root      39  19       0      0      0 S  0.0  0.0   0:03.02 khugepaged  
       18 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 crypto      
    
    • uptime
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# uptime
     10:08:23 up 10 days, 17:33,  1 user,  load average: 0.00, 0.00, 0.00
    
    • touch
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# ll
    total 12
    drwxr-xr-x 2 root root 4096 Apr  3 10:15 ./
    drwx------ 9 root root 4096 Apr  3 09:58 ../
    -rw-r--r-- 1 root root    0 Apr  3 10:15 test1.log
    -rw-r--r-- 1 root root    0 Apr  3 10:20 test2.log
    -rw-r--r-- 1 root root  121 Apr  3 10:15 urls.txt
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# touch test3.log
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# ll
    total 12
    drwxr-xr-x 2 root root 4096 Apr  3 10:20 ./
    drwx------ 9 root root 4096 Apr  3 09:58 ../
    -rw-r--r-- 1 root root    0 Apr  3 10:15 test1.log
    -rw-r--r-- 1 root root    0 Apr  3 10:20 test2.log
    -rw-r--r-- 1 root root    0 Apr  3 10:20 test3.log
    -rw-r--r-- 1 root root  121 Apr  3 10:15 urls.txt
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# touch -r test1.log test2.log
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# ll
    total 12
    drwxr-xr-x 2 root root 4096 Apr  3 10:20 ./
    drwx------ 9 root root 4096 Apr  3 09:58 ../
    -rw-r--r-- 1 root root    0 Apr  3 10:22 test1.log
    -rw-r--r-- 1 root root    0 Apr  3 10:22 test2.log
    -rw-r--r-- 1 root root    0 Apr  3 10:20 test3.log
    -rw-r--r-- 1 root root  121 Apr  3 10:15 urls.txt
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# touch -t 201804011023.50 test1.log
    root@iZ2ze0ht45qn4m8m1wjfdrZ:~/shj_test# ll
    total 12
    drwxr-xr-x 2 root root 4096 Apr  3 10:20 ./
    drwx------ 9 root root 4096 Apr  3 09:58 ../
    -rw-r--r-- 1 root root    0 Apr  1 10:23 test1.log
    -rw-r--r-- 1 root root    0 Apr  3 10:22 test2.log
    -rw-r--r-- 1 root root    0 Apr  3 10:20 test3.log
    -rw-r--r-- 1 root root  121 Apr  3 10:15 urls.txt
    
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  • 原文地址:https://www.cnblogs.com/sandysun/p/8759701.html
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