last is a command used to list last logged in users on a linux system.
[root@m3722 ~]# last root pts/0 112.133.248.3 Wed Jul 19 21:55 still logged in root pts/0 112.133.248.3 Tue Jul 18 19:58 - 20:00 (00:01) root pts/0 194.65.5.232 Tue Jul 18 10:47 - 10:54 (00:06) root pts/2 bl13-193-176.dsl Tue Jul 18 03:37 - 03:54 (00:16) root pts/2 bl13-193-176.dsl Tue Jul 18 03:33 - 03:36 (00:02) root pts/0 bl13-193-176.dsl Tue Jul 18 02:54 - 10:47 (07:53) reboot system boot 3.10.0-514.21.1. Mon Jun 19 19:46 - 21:56 (30+02:10) root pts/0 m2545.contabo.ho Mon Jun 19 16:59 - 16:59 (00:00) root pts/0 m2545.contabo.ho Sat Jun 17 16:23 - 16:23 (00:00) root pts/0 m2545.contabo.ho Sat Jun 17 16:23 - 16:23 (00:00) reboot system boot 3.10.0-514.el7.x Sat Jun 17 15:51 - 17:44 (2+01:52) wtmp begins Sat Jun 17 15:51:55 2017 [root@m3722 ~]#
Show Full Hostname in last
To see full host name in last result, use -w option
[root@m3722 ~]# last -w root pts/0 112.133.248.3 Thu Jul 20 06:10 still logged in root pts/0 112.133.248.3 Wed Jul 19 21:55 - 23:07 (01:11) root pts/0 112.133.248.3 Tue Jul 18 19:58 - 20:00 (00:01) root pts/0 194.65.5.232 Tue Jul 18 10:47 - 10:54 (00:06) root pts/2 bl13-193-176.dsl.telepac.pt Tue Jul 18 03:37 - 03:54 (00:16) root pts/2 bl13-193-176.dsl.telepac.pt Tue Jul 18 03:33 - 03:36 (00:02) root pts/0 bl13-193-176.dsl.telepac.pt Tue Jul 18 02:54 - 10:47 (07:53) reboot system boot 3.10.0-514.21.1.el7.x86_64 Mon Jun 19 19:46 - 06:12 (30+10:26) root pts/0 m2545.contabo.host Mon Jun 19 16:59 - 16:59 (00:00) root pts/0 m2545.contabo.host Sat Jun 17 16:23 - 16:23 (00:00) root pts/0 m2545.contabo.host Sat Jun 17 16:23 - 16:23 (00:00) reboot system boot 3.10.0-514.el7.x86_64 Sat Jun 17 15:51 - 17:44 (2+01:52) wtmp begins Sat Jun 17 15:51:55 2017 [root@m3722 ~]#
