显示命令的路径
# which ls
alias ls='ls --color=auto'
/bin/ls
关机命令
# shutdown -r +5
Broadcast message from root@node1
(/dev/pts/0) at 15:41 ...
The system is going down for reboot in 5 minutes!
^Cshutdown: Shutdown cancelled
查看用户
# who
root tty1 2017-02-22 13:54
root pts/0 2017-02-22 13:54
查看系统信息
# w
15:44:45 up 9 days, 2:13, 2 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty1 - 13:54 1:49m 0.04s 0.04s -bash
root pts/0 192.168.1.129 13:54 0.00s 0.26s 0.06s w