check-language-support, faketime, pi, powerstat, rig, xdg-user-dirs-update: update links (#7644)

pages/linux/xdg-user-dirs-update.md

@@ -0,0 +1,12 @@
+# xdg-user-dirs-update
+
+> Update XDG user directories.
+> More information: <https://manned.org/xdg-user-dirs-update>.
+
+- Change XDG's DESKTOP directory to the specified directory (must be absolute):
+
+`xdg-user-dirs-update --set DESKTOP "{{path/to/directory}}"`
+
+- Write the result to the specified dry-run-file instead of the `user-dirs.dirs` file:
+
+`xdg-user-dirs-update --dummy-output "{{path/to/dry_run_file}}" --set {{xdg_user_directory}} "{{path/to/directory}}"`