Update cheatsheets

tldr/linux/sulogin

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sulogin
+
+> Log in as root during single-user mode.
+> More information: <https://manned.org/man/sulogin>.
+
+- Start `sulogin` on the default console:
+
+`sudo sulogin`
+
+- Start `sulogin` on a specific TTY device:
+
+`sudo sulogin {{/dev/ttyX}}`
+
+- Set a maximum timeout(in seconds) for entering the root password before continuing normal boot:
+
+`sudo sulogin {{[-t|--timeout]}} {{timeout}}`
+
+- Start root's shell as a login shell:
+
+`sudo sulogin {{[-p|--login-shell]}}`
+
+- Force a root shell without asking for a password when default methods of obtaining the password fail:
+
+`sudo sulogin {{[-e|--force]}}`