To get User Listing.
[root@server~]# get ent passwd
OR
[root@server~]# less /etc/passwd
OR
[root@server~]# cut -di -f1 /etc/passwd
To get Login History.
[root@server~]# last -120
OR
[root@server~]# cat /var/log/secure *The "secure" file may have corresponding date.