run_init: add page (#18459)

Author: pranlawate

pages/linux/run_init.md

@@ -0,0 +1,22 @@
+# run_init
+
+> Run init scripts in the proper SELinux context.
+> Typically used to run system service scripts with correct SELinux domains.
+> See also: `runcon`, `semanage`.
+> More information: <https://manned.org/run_init>.
+
+- Run a script in the init script context:
+
+`sudo run_init {{path/to/script}}`
+
+- Run a script with arguments:
+
+`sudo run_init {{path/to/script}} {{start|stop|restart}}`
+
+- Run a script and specify the init script context explicitly:
+
+`sudo run_init {{[-t|--type]}} {{context_type}} {{path/to/script}}`
+
+- Display the context that would be used without running the script:
+
+`sudo run_init {{[-n|--dry-run]}} {{path/to/script}}`