Exactly what it sounds like, sysadmin stuff (like shell scripts)
These were all used at some point (or were based on other scripts) on my server(s). As you might tell looking, some of these were ad-hoc'd when they were initially made (ezupdate.sh was one of them).
NOTE- This repo and all its contents are 100% PUBLIC DOMAIN; if you want to copy, modify, or otherwise do things to or with any of the files here then have fun, just please don't change the readme file