# Linux last命令 Linux last命令用于顯示系統開機以來獲是從每月初登入者的訊息。 使用權限：所有使用者。 ### 語法 ``` shell>> last [options] ``` **參數說明**： * -R 省略 hostname 的欄位 * -num 展示前 num 個 * username 展示 username 的登入訊息 * tty 限制登入訊息包含終端機代號 ### 實例 ``` shell>> last -R -2 johnney pts/1 Mon Aug 14 20:42 still logged in johnney pts/0 Mon Aug 14 19:59 still logged in wtmp begins Tue Aug 1 09:01:10 2000 ### /var/log/wtmp shell>> last -2 minery minery pts/0 140.119.217.115 Mon Aug 14 18:37 - 18:40 (00:03) minery pts/0 140.119.217.115 Mon Aug 14 17:22 - 17:24 (00:02) wtmp begins Tue Aug 1 09:01:10 2000 ``` 一般顯示方法 ``` # last ``` 簡略顯示，并指定顯示的個數 ``` # last -n 5 -R root pts/4 Thu May 13 17:25 still logged in root pts/2 Thu May 13 17:23 - 17:25 (00:02) root pts/1 Thu May 13 16:46 still logged in root pts/7 Thu May 13 15:36 still logged in root pts/9 Thu May 13 15:35 still logged in wtmp begins Thu May 13 18:55:40 2014 ``` 顯示最后一列顯示主機IP地址 ``` # last -n 5 -a -i root pts/4 Thu May 13 17:25 still logged in 192.168.1.10 root pts/2 Thu May 13 17:23 - 17:25 (00:02) 192.168.1.10 root pts/1 Thu May 13 16:46 still logged in 192.168.1.10 root pts/7 Thu May 13 15:36 still logged in 192.168.1.10 root pts/9 Thu May 13 15:35 still logged in 192.168.1.10 wtmp begins Thu May 13 18:55:40 2014 ```