who -b -u
[root@node3 ~]# last -a | grep -i still
deepak pts/1 Fri May 31 16:58 still logged in 10.0.2.31
root pts/2 Fri May 31 16:50 still logged in 10.0.2.30
root pts/0 Fri May 31 09:17 still logged in 10.0.2.2