deluser, userdel: add page (#5245)

pages/linux/deluser.md

@@ -0,0 +1,21 @@
+# deluser
+
+> Delete a user from the system.
+> Note: all commands must be executed as root.
+> More information: <https://manpages.debian.org/adduser/deluser.8.html>.
+
+- Remove a user:
+
+`deluser {{username}}`
+
+- Remove a user and their home directory:
+
+`deluser --remove-home {{username}}`
+
+- Remove a user and their home, but backup their files into a `.tar.gz` file in the specified directory:
+
+`deluser --backup-to {{path/to/backup_directory}} --remove-home {{username}}`
+
+- Remove a user, and all files owned by them:
+
+`deluser --remove-all-files {{username}}`

pages/linux/userdel.md

@@ -1,7 +1,21 @@
 # userdel
 
-> Remove a user.
+> Remove a user account or remove a user from a group.
+> Note: all commands must be executed as root.
+> More information: <https://man7.org/linux/man-pages/man8/userdel.8.html>.
 
-- Remove a user and their home directory:
+- Remove a user:
 
-`userdel -r {{name}}`
+`userdel {{name}}`
+
+- Remove a user along with their home directory and mail spool:
+
+`userdel --remove {{name}}`
+
+- Remove a user from a group:
+
+`userdel {{name}} {{group}}`
+
+- Remove a user in other root directory:
+
+`userdel --root {{path/to/other/root}} {{name}}`