From 2307b08212504845da46bff3eecbd8642e18e755 Mon Sep 17 00:00:00 2001
From: Ian Kelling <ian@iankelling.org>
Date: Sun, 28 Jul 2019 20:02:41 -0400
Subject: [PATCH] better arg checking

---
 btrbk-run | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/btrbk-run b/btrbk-run
index fa20061..3ec2221 100644
--- a/btrbk-run
+++ b/btrbk-run
@@ -150,9 +150,18 @@ while true; do
   esac
 done
 
-# usefull commands are resume and archive
+# only tested commands are resume and archive
 cmd_arg=${1:-run}
 
+case $cmd_arg in
+  run|resume|archive) : ;;
+  *) die "untested command arg" ;;
+esac
+
+if (( $# > 1 )); then
+  die: "only 1 nonoption arg is supported"
+fi
+
 if [[ -v targets && $source ]]; then
   die "error: -t and -s are mutually exclusive"
 fi
-- 
2.30.2