want to know what the othe ssh user is doing

["J. Bakshi" <bakshi12@xxxxxxxxx>]

Hello all,

I like to monitor (live) the command executed by other ssh user. "ps -u <username> " or "top" might help a little bit. But I like to have a LIVE shell based monitoring tool so that I can simple see the command executed by the ssh users?
Is there any such tool ? My ssh version is 

openssh-server_5.1p1-5_i386.deb

Thanks