Update cheatsheets

linux/userdel

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# userdel
+
+> Remove a user account or remove a user from a group.
+> See also: `users`, `useradd`, `usermod`.
+> More information: <https://manned.org/userdel>.
+
+- Remove a user:
+
+`sudo userdel {{username}}`
+
+- Remove a user in other root directory:
+
+`sudo userdel --root {{path/to/other/root}} {{username}}`
+
+- Remove a user along with the home directory and mail spool:
+
+`sudo userdel --remove {{username}}`