Give helpful error when `manage-baserock add` is not given a URL

1 files changed, 6 insertions, 1 deletions

diff --git a/manage-baserock b/manage-baserock
index 8210812..f9d646a 100755
--- a/manage-baserock
+++ b/manage-baserock
@@ -60,7 +60,12 @@ case "${ACTION}" in
             echo "Sorry, $SYSTEM already exists"
             exit 1
         fi
-        
+
+        if test -z "$URL"; then
+            echo "Usage: $0 add <name> <url>"
+            exit 1
+        fi
+
         TEMP_BASE=$(mktemp -d --tmpdir="${BASEROCK_BASE}")
         cleanup () { rm -rf "${TEMP_BASE}"; }
         trap cleanup 0