1 files changed, 4 insertions, 0 deletions
diff --git a/format-notify b/format-notify
index d34fe67..0356587 100755
--- a/format-notify
+++ b/format-notify
@@ -19,6 +19,10 @@ def clean_output(status, output):
     return re.sub(r'^[- :]*', '', output)
 
 def main():
+    if len(sys.argv) < 4:
+        print('Usage: %s (PIPE|--test) SERVICE STATUS OUTPUT' % sys.argv[0])
+        sys.exit(1)
+
     file = sys.argv.pop(1)
     service = sys.argv.pop(1)
     status = sys.argv.pop(1)