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}}

Remove a user from a group, without deleting the user

sudo deluser {{username}} {{group}}