Linux w command

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The Linux w command is used to display information about users currently logged into the system.

This command can tell you who is currently logged into the system and what programs they are running.

Executing the w command alone will display all users, or you can specify a user name to display the relevant information of a specific user only.

Syntax

w [-fhlsuV][User Name]

Parameter Description:

• -f 　Turn on or off the display of where the user logged into the system.
• -h 　Do not display the column title information.}
• -l 　Use a detailed format list, this is the default value.
• -s 　Use a concise format list, do not display user login time, terminal job phase, and CPU time consumed by the program.
• -u 　Ignore the name of the executing program, as well as the information about the CPU time consumed by the program.
• -V 　Display version information.

Online Examples

Display current user

# w  // Display current user login information and executed commands
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

Do not display login location

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

Display in concise mode

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

Do not display title

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

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