--- a/docs/src/check-repositories.md	Sat Aug 05 09:56:51 2017 +0200
+++ b/docs/src/check-repositories.md	Sat Aug 05 10:12:12 2017 +0200
@@ -2,3 +2,8 @@
 ===========================
 
 Checks if every repository used by sync-directories is configured and available.
+This command outputs the status for each repository.
+It returns zero when all repositories are all available and non-zero otherwise.
+
+**Command alias:** check-repos
+