linux基础命令3

# which ls
alias ls='ls --color=auto'
 /bin/ls

# 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

# who
root     tty1         2017-02-22 13:54
root     pts/0        2017-02-22 13:54

# 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