Show usage if parameters not sastified

2022-12-22 16:53:15 +08:00 · 2022-12-22 16:53:15 +08:00 · 820923fd34
parent f148d165f4
commit 820923fd34
1 changed files with 1 additions and 0 deletions
--- a/backup-if-change.sh
+++ b/backup-if-change.sh
@ -79,6 +79,7 @@ function main()
    if [ -z "$FILE" -o -z "$TARGET_DIR" ]
    then
        echo "option(s) --file or --target-dir is unspecified."
+        show_usage
        exit 1
    fi
    hash_prev=""