Novell tricks
Back in the days when I was a "student assistant" at Uni, one of the other SAs set up batch files for "dir", "syscon", and other common Novell commands in his home directory that would log someone out. His reasoning being that was the quickest way to get logged out if you left yourself logged in and someone else discovered it.
So a high-level sysadmin found his account logged in, did a dir and got logged out. For some reason, she was furious... mainly because she wasn't too bright and didn't understand what just happened.
He got a huge bollocking from the head of sysadmins for his "shenanigans", but when it escalated to the department director, he was cleared and congratulated as a clever chap.
This didn't endear him to the sysadmins for a while, until they finally actually understood what he was doing, and grudgingly admitted it was a good idea after all.
Biting the hand that feeds IT
