查看用户登录信息

# w
 17:10:44 up 193 days, 13:46,  3 users,  load average: 0.00, 0.15, 0.40
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    10.2.20.50       09:27    7:29m  0.57s  0.12s cat
root     pts/1    10.2.20.50       09:41    4.00s  0.57s  0.57s -bash
root     pts/2    10.2.20.50       09:42    5:57m 11.84s  0.03s /bin/sh

# who
root     pts/0        2023-10-25 09:27 (10.2.20.50)
root     pts/1        2023-10-25 09:41 (10.2.20.50)
root     pts/2        2023-10-25 09:42 (10.2.20.50)