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  • whoami,who,w命令详解

      

    http://www.voidcn.com/blog/wszzdanm/article/p-6145895.html

    命令功能:显示登录用户的信息

    命令格式:

    常用选项:

    举例:

    w 显示已经登录的用户及正在进行的操作

    [root@localhost ~]# w

     11:22:01 up 4 days, 21:22,  3 users,  load average: 0.00, 0.00, 0.00

    USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT

    root     tty1     -                Thu14    4days  0.19s  0.19s -bash

    root     pts/0    172.31.3.32      Thu14    0.00s  0.73s  0.00s w

    root     pts/1    172.31.3.32      11:18    1:50   0.07s  0.02s -bash

    who 显示已经登录的用户名、终端名称、登录时间及登录IP

    [root@localhost ~]# who

    root     tty1         2015-11-12 14:00

    root     pts/0        2015-11-12 14:03 (172.31.3.32)

    root     pts/1        2015-11-17 11:18 (172.31.3.32)

    whoami 显示当前用户的用户名

    [zzd@localhost ~]$ whoami

    zzd

    who am i 显示登录系统的时候的用户名,即使已经切换到其他用户也显示登录时的用户

             结果同who -m

    [zzd@localhost ~]$ whoami

    zzd

    [zzd@localhost ~]$ who am i

    root     pts/1        2015-11-17 11:18 (172.31.3.32)

    [zzd@localhost ~]$ who -m

    root     pts/1        2015-11-17 11:18 (172.31.3.32)

    显示当前用户

    w  //显示当前用户,不显示登录位置
    19:50:14 up 9:27, 4 users, load average: 0.31, 0.26, 0.18
    USER   TTY   FROM       LOGIN@  IDLE  JCPU  PCPU WHAT
    root   tty7   :0        Thu12  31:39m 10:10  0.60s gnome-session
    root   pts/0  :0.0       17:09  2:18m 15.26s 0.15s bash
    root   pts/1  192.168.1.17   18:51  1.00s 1.24s 0.14s -bash
    root   pts/2  192.168.1.17   19:48  60.00s 0.05s 0.05s -bash

    不显示登录位置

    w -f
    19:53:59 up 9:31, 4 users, load average: 0.05, 0.16, 0.15
    USER   TTY    LOGIN@  IDLE  JCPU  PCPU WHAT
    root   tty7   Thu12  31:43m 10:10  0.60s gnome-session
    root   pts/0   17:09  2:21m 15.26s 0.15s bash
    root   pts/1   18:51  0.00s 1.04s 0.14s -bash
    root   pts/2   19:48  4:45  0.05s 0.05s -bash

    以精简模式显示

    w -s
    19:54:37 up 9:31, 4 users, load average: 0.24, 0.19, 0.16
    USER   TTY   FROM        IDLE WHAT
    root   tty7   :0        31:43m gnome-session
    root   pts/0  :0.0       2:22m bash
    root   pts/1  192.168.1.17   0.00s -bash
    root   pts/2  192.168.1.17   5:23 -bash

    不显示标题

    w -h
    root   tty7   :0        Thu12  31:44m 10:10  0.60s gnome-session
    root   pts/0  :0.0       17:09  2:23m 15.26s 0.15s bash
    root   pts/1  192.168.1.17   18:51  0.00s 1.05s 0.14s -bash
    root   pts/2  192.168.1.17   19:48  5:54  0.05s 0.05s -bash
    yexiang@ubuntu:<sboot>$ w -u yexiang
     14:02:04 up 9 days,  4:40,  3 users,  load average: 0.99, 1.25, 0.99
    USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
    yexiang  pts/1    10.0.4.198       10:19    3.00s  0.19s  0.00s w -u yexiang
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  • 原文地址:https://www.cnblogs.com/machangwei-8/p/10354567.html
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