Update cheatsheets

linux/ctrlaltdel

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ctrlaltdel
+
+> Utility to control what happens when CTRL+ALT+DEL is pressed.
+> More information: <https://manned.org/ctrlaltdel>.
+
+- Get current setting:
+
+`ctrlaltdel`
+
+- Set CTRL+ALT+DEL to reboot immediately, without any preparation:
+
+`sudo ctrlaltdel hard`
+
+- Set CTRL+ALT+DEL to reboot "normally", giving processes a chance to exit first (send SIGINT to PID1):
+
+`sudo ctrlaltdel soft`