fc-pattern, sv, tomb, xkill: add examples (#6121)

pages/common/sv.md

@@ -14,3 +14,11 @@
 - Get service status:
 
 `sudo sv status {{path/to/service}}`
+
+- Reload a service:
+
+`sudo sv reload {{path/to/service}}`
+
+- Start a service, but only if it's not running and don't restart it if it stops:
+
+`sudo sv once {{path/to/service}}`

pages/common/xkill.md

@@ -6,3 +6,7 @@
 - Display a cursor to kill a window when pressing the left mouse button (press any other mouse button to cancel):
 
 `xkill`
+
+- Display a cursor to select a window to kill by pressing any mouse button:
+
+`xkill -button any`