Add help information.

2026-03-02 15:38:41 +01:00
parent 6bc2145612
commit 4240b99f84
1 changed files with 10 additions and 1 deletions
--- a/countdown.sh
+++ b/countdown.sh
@@ -24,9 +24,18 @@

 set -euo pipefail

-if [ $? -gt 1 ]
+if [ $# -gt 1 ]
+then
+	echo "Too many arguments"
+	echo "Usage: $0 [COUNT]"
+	exit 1
+elif [ $# -eq 1 ] && [ "$1" = "-h" ]
 then
 	echo "Usage: $0 [COUNT]"
+	exit 0
+elif [ $# -eq 1 ] && [ "$1" -le 0 ]
+then
+	echo "COUNT must be a positive integer"
 	exit 1
 fi