How can I list all human users that I've created? I've tried
cat /etc/passwd and it just lists a lot of stuff.
Human users have UIDs starting at 1000, so you can use that fact to filter out the non-humans:
This cuts the first (username) and third (UID) colon-delimited fields from
If you have more than nine thousand users on your system, this will fail - but it's necessary to restrict the result to 4-digit UIDs in order not to catch