w command
LINUX-Frequently used commands
| w command Show user information while logged in. |
| Ｓyntax |
| w [Option] |
| The w command displays the logged-in user information like the who command, but with more detail than the who command. In addition to the information displayed by the who command, the following information will be displayed. ・System information（Hours of operation, number of logged in users, load） ・IDEL Time（Time not in operation） ・JCPU （The amount of time the terminal has used the CPU） ・PCPU （The amount of time the processes listed in WHAT used the CPU） ・WHAT （The process the user is running） |
| Frequently used options |
| -h Hide header -s Shorten the display. Do not show login time, JCPU, PCPU -f Hide FROM (remote hostname) (depends on distribution) |
| Example: No options. |
| $ w 12:25:45 up 7 days, 21:47, 2 users, load average: 0.00, 0.01, 0.05 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 xxxyyyzzz.abcdefg 11:54 18:41 0.04s 0.04s -bash koro pts/1 xxxyyyzzz.abcdefg 12:08 1.00s 0.08s 0.00s w |
| Example: Run a command with a user name. |
| $ w koro 12:25:45 up 7 days, 21:47, 2 users, load average: 0.00, 0.01, 0.05 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT koro pts/1 xxxyyyzzz.abcdefg 12:08 1.00s 0.08s 0.00s w |
| Example: Hide header. |
| $ w -h USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 xxxyyyzzz.abcdefg 11:54 18:41 0.04s 0.04s -bash koro pts/1 xxxyyyzzz.abcdefg 12:08 1.00s 0.08s 0.00s w |