costs

commit 2358e2b5090291dcb3b22e01b8dbd6e6bfb4c68f
parent 36b193e0ad761334dd934a957014084b1ae5e096
Author: Jacob R. Edwards <jacob@jacobedwards.org>
Date:   Sun,  6 Aug 2023 07:46:12 -0700

Give standard usage error message

Diffstat:
M
costs
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/costs b/costs
@@ -8,7 +8,10 @@ do
 	case "$1" in
 	(-t) filter=./total.awk ;;
 	(-p) filter=./percentage.awk ;;
-	(-*) echo 'invalid option' 1>&2 ;;
+	(-*)
+		echo "usage: ${0##*/} [-tp] [args ...]
+error: $1: invalid option" 1>&2
+		exit 1 ;;
 	(*) break ;;
 	esac
 	shift