While a student in the late 90s I worked the weekend graveyard shift as a datacenter "operator". My primary duties were change the 1/2 inch backup tapes and racking them with their corresponding green bar printout logs. I also cleaned the backup drive heads with a q-tip and isopropyl alcohol and made sure all the nightly batch jobs finished.

I also read Usenet news, chatted with strangers on Bitnet Relay and played a lot of NetHack. Good times.