1.hostname

顯示主機名稱、設置主機名稱

1）顯示主機名稱

xiaohuang@xiaohuang-virtual-machine:~$ hostname
xiaohuang-virtual-machine

2）臨時設置主機名稱

sudo hostname kangbazi

3）永久設置主機名名稱

sudo vim /etc/hostnam

2.whoami

查看當前登錄用戶

xiaohuang@xiaohuang-virtual-machine:~$ whoami 
xiaohuang

3.who

查看當前登錄用戶

xiaohuang@xiaohuang-virtual-machine:~$ who
xiaohuang tty7         2018-09-01 08:18 (:0)
xiaohuang pts/1        2018-09-01 08:54 (10.11.53.239)

tty 終端登錄

pts 遠程登錄

4.last

查看最近的登錄信息

xiaohuang@xiaohuang-virtual-machine:~$ last
xiaohuan pts/1        10.11.53.239     Sat Sep  1 08:54   still logged in
xiaohuan pts/1        10.11.53.239     Sat Sep  1 08:23 - 08:51  (00:27)
wtmp begins Sat Sep  1 08:23:30 2018

5.w

查看登錄者的信息及行為

xiaohuang@xiaohuang-virtual-machine:~$ w
 11:45:15 up  3:28,  2 users,  load average: 0.00, 0.00, 0.00
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
xiaohuan tty7     :0               08:18    3:28m 10.44s  0.62s /sbin/upstart --user
xiaohuan pts/1    10.11.53.239     08:54    1.00s  6.50s  0.03s w

Linux登錄狀態