语法格式：last [选项]
常用参数：
| -R | 省略hostname的栏位 |
| usename | 展示username的登入讯息 |
| tty | 限制登入讯息包含的终端代号 |
参考实例
显示近期用户或终端的登录情况：
[root@bunian ~]# last
root pts/0 127.0.0.1 Thu Dec 23 10:17 still logged in
root pts/0 127.0.0.1 Wed Dec 22 10:59 - 18:13 (07:14)
root pts/0 115.63.64.90 Sun Dec 19 19:02 - 01:52 (06:49)
root pts/0 115.63.64.90 Sun Dec 19 11:01 - 18:50 (07:49)
root pts/0 115.63.69.129 Sat Dec 18 11:26 - 22:23 (10:56)
root pts/0 115.63.69.129 Fri Dec 17 09:55 - 02:30 (16:35)
root pts/0 115.63.70.196 Thu Dec 16 19:15 - 22:47 (03:32)
root pts/0 127.0.0.1 Thu Dec 16 13:22 - 13:40 (00:17)
root pts/0 127.0.0.1 Thu Dec 16 13:22 - 13:22 (00:00)
lighthou pts/0 119.28.22.215 Wed Dec 1 12:30 - 12:41 (00:10)
reboot system boot 3.10.0-1160.31.1 Wed Dec 1 12:30 - 10:27 (21+21:56) 简略显示，并指定显示的个数：
[root@bunian ~]# last -n 5 -R
root pts/0 Thu Dec 23 10:17 still logged in
root pts/0 Wed Dec 22 10:59 - 18:13 (07:14)
root pts/0 Sun Dec 19 19:02 - 01:52 (06:49)
root pts/0 Sun Dec 19 11:01 - 18:50 (07:49)
root pts/0 Sat Dec 18 11:26 - 22:23 (10:56) 显示最后一列显示主机IP地址：
[root@bunian ~]# last -n 5 -a -i
root pts/0 Thu Dec 23 10:17 still logged in 127.0.0.1
root pts/0 Wed Dec 22 10:59 - 18:13 (07:14) 127.0.0.1
root pts/0 Sun Dec 19 19:02 - 01:52 (06:49) 115.63.64.90
root pts/0 Sun Dec 19 11:01 - 18:50 (07:49) 115.63.64.90
root pts/0 Sat Dec 18 11:26 - 22:23 (10:56) 115.63.69.129
