Most sysadmins will tell you that shared logins are a high security risk. So when you login, there is no way for the system to know who is pressing keys on the keyboard. You could base the differentiation on the incoming IP address but most PCs get random IP addresses from DHCP. So there really isn't any electronic way to determine who you are wehen you login. I would strongly looking at the single login requirement as it can cause other problems sych as exceeding maxuprc, and as you might expect, you'll never know who trashed the account when someona msakes a mistake.
If therre is no possible choice about shared logins, then create a shell script with the changes and name it with your initials. Put it in a local directory such as $HOME/scripts and then add ~/scripts to your login PATH in .dtprofile so you just type xyz after login. Otherwise, just type ./scripts/xyz to get all your personal setup chanhes.
Bill Hassell, sysadmin
