If you and your support people are loggin into the box it may be as simple as typeing the 'history' command. This will display all the commands that particular user has executed. The amount of commands you can see depends on how its set-up on your system. But generally the 'history' command gets its data from the 'cd ~/ ; cat .bash_history' of course if your using a bash shell. Apart from that then if your using a different shell to bash... i don't know. But try that... if not come back and maybe someone else can help.