Tries the "who" or "w" command.
example :
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root@witt01 # w
3:04pm up 33 day(s), 8:13, 6 users, load average: 3.99, 4.21, 3.55
User tty login@ idle JCPU PCPU what
eoc pts/11 12:20pm 49 rlogin eoc1sc2b
root pts/9 2:43pm 21 -ksh
eoc pts/8 9:26am 12 1:16 -ksh
eoc pts/0 12:12pm 21 -ksh
eoc pts/12 2:48pm 12 7 -ksh
eoc pts/14 12:27pm 50 -ksh
==========================================
root@witt01 # who
eoc pts/11 Mar 1 12:20 (eoc1ct1a)
root pts/9 Mar 1 14:43 (SYSADM01)
eoc pts/8 Mar 1 09:26 (eocsn01)
eoc pts/0 Mar 1 12:12 (10.11.30.30)
eoc pts/12 Mar 1 14:48 (eocsn01)
eoc pts/14 Mar 1 12:27 (eoc1ct1a)
root@witt01 #
Witt