linux之w、who、last、lastlog

时间 2020-09-12

标签 linux lastlog 栏目 Linux 繁體版

原文原文链接

w：Show who is logged on and what they are doingmysql

查看当前登陆用户以及用户在作什么sql

[root@www ~]# w
 11:02:41 up 4 days,  2:05,  3 users,  load average: 0.00, 0.00, 0.00        #系统启动时间，运行多久，几个用户登陆，平均负载
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    192.168.146.1    03:45    0.00s  0.38s  0.00s w
root     pts/1    192.168.146.1    09:09    2:00   0.04s  0.00s -bash
zhangsan pts/2    192.168.146.1    11:01    1:40   0.00s  0.00s -bash

who：show who is logged onbash

查看谁正在登陆系统ide

[root@www ~]# who
root     pts/0        2018-09-05 03:45 (192.168.146.1)
root     pts/1        2018-09-05 09:09 (192.168.146.1)
zhangsan pts/2        2018-09-05 11:01 (192.168.146.1)

last：show listing of last logged in usersit

展现目前和上次登陆系统的用户，读取的文件是/var/log/wtmpast

[root@www ~]# last
zhangsan pts/2        192.168.146.1    Wed Sep  5 11:01   still logged in
root     pts/1        192.168.146.1    Wed Sep  5 09:09   still logged in
root     pts/0        192.168.146.1    Wed Sep  5 03:45   still logged in
root     pts/1        192.168.146.1    Sun Sep  2 11:24 - 11:34  (00:09)
root     pts/0        192.168.146.1    Sun Sep  2 11:20 - 11:34  (00:14)
                                      开始登陆的时间   离开的时间   登陆的总时间

lastlog：reports the most recent login of all users or of a given userclass

检查系统中全部用户上次登陆的记录，读取的文件是/var/log/lastlog登录

[root@www ~]# lastlog
用户名           端口     来自             最后登录时间
root             pts/0    192.168.146.1    三 9月  5 11:13:30 +0800 2018
mysql                                      **从未登陆过**
zhangsan         pts/2    192.168.146.1    三 9月  5 11:01:01 +0800 2018
lisi                                       **从未登陆过**