From: Ian Kelling <ian@iankelling.org>
Date: Mon, 29 Jul 2019 00:02:41 +0000 (-0400)
Subject: better arg checking
X-Git-Url: https://iankelling.org/git/?p=distro-setup;a=commitdiff_plain;h=2307b08212504845da46bff3eecbd8642e18e755

better arg checking
---

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