deluser

Delete a user from the system. More information: https://manned.org/deluser.

• Remove a user:

sudo deluser username

• Remove a user and their home directory:

sudo deluser --remove-home username

• Remove a user and their home, but backup their files into a .tar.gz file in the specified directory:

sudo deluser --backup-to path/to/backup_directory --remove-home username

• Remove a user, and all files owned by them:

sudo deluser --remove-all-files username