One of my proudest moments in masters was they had the masters students demo each week to the undergrads. So I'm in a big auditorium on a pc with a projector be

One of my proudest moments in masters was they had the masters students demo each week to the undergrads. So I'm in a big auditorium on a pc with a projector behind me. This was in 2000, computer still had a floppy drive. They wiped the computer every week, Windows NT. I popped in the floppy did D: and typed `ls`... and error, and the whole class laughed at me. Having been switching a lot lately I typed, I believe, `echo dir > C:\Windows\ls.bat` and (or whatever the right pipe command is, it's been a while), and typed `ls` again. Then double birded the whole class. And started launching the demo. There were audible gasps esp from the professor who was like, hold up, what did you just do. So I spent 3 minutes explaining it to the class, then we did our demo. I was at the time quite proud of them all being flabberghasted while I also flipped off over 75 students, actually still am.