Update cheatsheets

linux/rc-update

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rc-update
+
+> Add and remove OpenRC services to and from runlevels.
+> See also `openrc`.
+> More information: <https://manned.org/rc-update>.
+
+- List all services and the runlevels they are added to:
+
+`rc-update show`
+
+- Add a service to a runlevel:
+
+`sudo rc-update add {{service_name}} {{runlevel}}`
+
+- Delete a service from a runlevel:
+
+`sudo rc-update delete {{service_name}} {{runlevel}}`
+
+- Delete a service from all runlevels:
+
+`sudo rc-update --all delete {{service_name}}`