physlock: add page (#4682)

pages/linux/physlock.md

@@ -0,0 +1,24 @@
+# physlock
+
+> Lock all consoles and virtual terminals.
+> More information: <http://github.com/muennich/physlock>.
+
+- Lock every console (require current user or root to unlock):
+
+`physlock`
+
+- Mute kernel messages on console while locked:
+
+`physlock -m`
+
+- Disable SysRq mechanism while locked:
+
+`physlock -s`
+
+- Display a message before the password prompt:
+
+`physlock -p "{{Locked!}}"`
+
+- Fork and detach physlock (useful for suspend or hibernate scripts):
+
+`physlock -d`