Searching log for shutdown/reboot on Linux
16 May 2016To address problem, sometimes, we need to find log to know machine's shutdown/reboot time. However, how to do it?
last command
We use command, man last, to view the illustration(link). It lists login account, but reboot the machines use a pseudo account. Hence, we use the command, last reboot , to show the reboot time. For an instance, it shows last reboot time at 5/12 13:04.
[root@centos-6 ~]# last reboot
reboot system boot 2.6.32-431.el6.x Thu May 12 13:04 - 12:29 (3+23:25)
reboot system boot 2.6.32-431.el6.x Mon May 9 09:55 - 13:01 (3+03:05)
reboot system boot 2.6.32-431.el6.x Thu Apr 14 18:20 - 09:52 (24+15:31)
reboot system boot 2.6.32-431.el6.x Thu Apr 14 15:00 - 18:19 (03:19)
reboot system boot 2.6.32-431.el6.x Thu Apr 14 14:42 - 14:59 (00:16)
reboot system boot 2.6.32-431.el6.x Thu Apr 14 14:31 - 14:42 (00:10)
reboot system boot 2.6.32-431.el6.x Thu Apr 14 14:27 - 14:30 (00:03)
reboot system boot 2.6.32-431.el6.x Thu Apr 14 14:20 - 14:26 (00:05)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 14:12 - 14:28 (00:15)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 13:47 - 14:11 (00:24)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 13:35 - 13:46 (00:10)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 11:50 - 13:35 (01:45)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 11:18 - 11:49 (00:31)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 11:10 - 11:18 (00:07)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 10:48 - 11:10 (00:21)
reboot system boot 2.6.32-431.el6.x Tue Jan 26 10:10 - 10:48 (00:37)
wtmp begins Tue Jan 26 09:57:17 2016
Then if you want to list logs of shutdown. Using the command, last -x shutdown, which is follows.
[root@centos-6 ~]# last -x shutdown
shutdown system down 2.6.32-431.el6.x Thu May 12 13:01 - 13:04 (00:02)
shutdown system down 2.6.32-431.el6.x Mon May 9 09:52 - 09:55 (00:03)
shutdown system down 2.6.32-431.el6.x Thu Apr 14 18:19 - 18:20 (00:00)
shutdown system down 2.6.32-431.el6.x Thu Apr 14 14:59 - 15:00 (00:00)
shutdown system down 2.6.32-431.el6.x Thu Apr 14 14:42 - 14:42 (00:00)
shutdown system down 2.6.32-431.el6.x Thu Apr 14 14:31 - 14:31 (00:00)
shutdown system down 2.6.32-431.el6.x Thu Apr 14 14:26 - 14:27 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 13:46 - 13:47 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 13:35 - 13:35 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 11:49 - 11:50 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 11:18 - 11:18 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 11:10 - 11:10 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 10:48 - 10:48 (00:00)
shutdown system down 2.6.32-431.el6.x Tue Jan 26 10:09 - 10:10 (00:00)
wtmp begins Tue Jan 26 09:57:17 2016
