scndthe2nd

for /f "tokens=1,2" %i in ('udadmin -list ^| find /i "@"') do @udadmin -f %j -user %i -delete

For each line

	find users with this search criteria
	in that list

	find users without this search criteria
	in that list

scndthe2nd

## Removes everything but base. Don't use F-kit unless you really mean to.
## Warning
## This isn't my code
## I found this and need to make sure i keep it.
## ArchLinux F-Kit

pacman -R $(comm -23 <(pacman -Qq|sort) <((for i in $(pacman -Qqg base); do pactree -ul $i; done)|sort -u|cut -d ' ' -f 1))