Here I publish code I wrote:
shutdownd, a simple dead man's
shutdownc, a client for shutdownd
userneu, a Perl script to automate creating user
accounts on FreeBSD and Linux
usermatic, a collection of small scripts to automate maintenance of user accounts by checking the passwd database against a list of current student/employees/whatever
usermatic-frontend, a simple commandline frontend to usermatic
sv-listparser, a Perl script that's probably only useful to Bavarian Schools. It converts lists exported from Bayrisches Schulverwaltungsprogramm to lists suitable for use with userneu/usermatic.
some other small scripts to faciliate various administrative tasks.