Linux systems last shutdown or reboot date and time

We know that we can use uptime command to know the uptime of linux server.

By using uptime command we can know only uptime of server,it does not displays when the server rebooted or shutdown.

[root@gw-server ~]# uptime

 08:19:52 up 100 days, 23:19,  1 user,  load average: 0.05, 0.14, 0.13

[root@gw-server ~]#

Command Shows list of Date and Time of server when server has rebooted/shutdown 

[root@gw-server ~]# date

Sun Nov 12 08:19:36 EST 2017

[root@gw-server ~]# last -x | grep reboot

reboot   system boot  3.10.0-514.26.2. Thu Aug  3 09:59 - 08:19 (100+23:19)

reboot   system boot  3.10.0-514.26.2. Thu Aug  3 09:52 - 09:59  (00:07)

reboot   system boot  3.10.0-229.el7.x Thu Aug  3 09:35 - 09:52  (00:16)

reboot   system boot  3.10.0-229.el7.x Fri Mar  3 16:13 - 09:35 (152+16:21)

reboot   system boot  3.10.0-229.el7.x Thu May 12 08:24 - 16:12 (295+08:48)

reboot   system boot  3.10.0-229.el7.x Mon Nov  2 05:53 - 08:23 (192+01:30)

reboot   system boot  3.10.0-229.el7.x Thu Oct  1 05:29 - 05:53 (32+01:23)

reboot   system boot  3.10.0-229.4.2.e Tue Sep 29 08:49 - 05:29 (1+20:39)

reboot   system boot  3.10.0-229.el7.x Tue Sep 29 08:25 - 08:49  (00:23)

reboot   system boot  3.10.0-229.el7.x Tue Sep 29 08:25 - 08:25  (00:00)

[root@gw-server ~]#

If you observe below line 100+23:19 means 100 days+23 hours and 19 minutes.

reboot   system boot  3.10.0-514.26.2. Thu Aug  3 09:59 - 08:19 (100+23:19)

[root@gw-server ~]# last -x | grep shutdown

shutdown system down  3.10.0-514.26.2. Thu Aug  3 09:59 - 09:59  (00:00)

shutdown system down  3.10.0-229.el7.x Thu Aug  3 09:52 - 09:52  (00:00)

shutdown system down  3.10.0-229.el7.x Thu Aug  3 09:35 - 09:35  (00:00)

shutdown system down  3.10.0-229.el7.x Fri Mar  3 16:12 - 16:13  (00:00)

shutdown system down  3.10.0-229.el7.x Thu May 12 08:23 - 08:24  (00:01)

shutdown system down  3.10.0-229.el7.x Mon Nov  2 05:53 - 05:53  (00:00)

shutdown system down  3.10.0-229.4.2.e Thu Oct  1 05:29 - 05:29  (00:00)

shutdown system down  3.10.0-229.el7.x Tue Sep 29 08:49 - 08:49  (00:00)

shutdown system down  3.10.0-229.el7.x Tue Sep 29 08:25 - 08:25  (00:00)

If you want only Last shutdown or reboot of server 

[root@gw-server ~]# last -x | grep reboot | head -1

reboot   system boot  3.10.0-514.26.2. Thu Aug  3 09:59 - 08:24 (100+23:24)

[root@gw-server ~]# last -x | grep shutdown | head -1

shutdown system down  3.10.0-514.26.2. Thu Aug  3 09:59 - 09:59  (00:00)

[root@gw-server ~]# date

Sun Nov 12 08:24:48 EST 2017

[root@gw-server ~]#