User list currenly logged in.

[root@vikas 18-feb]# whatis users
users (1) - print the user names of users currently logged in to the current host
[root@vikas 18-feb]# users
root root root root root

[root@vikas 18-feb]# who
root tty7 2009-02-20 10:01 (:0)
root pts/0 2009-02-20 10:38 (:0.0)
root pts/1 2009-02-20 16:20 (:0.0)
root pts/3 2009-02-20 15:46 (192.168.4.141)
root pts/4 2009-02-20 15:51 (192.168.4.141)
[root@vikas 18-feb]# who -q
root root root root root
# users=5
[root@vikas 18-feb]#