commit-time: add usage info

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
2019-05-20 19:42:43 -07:00 · 2019-05-20 19:42:43 -07:00 · 502bd4101e
parent 288640115e
commit 502bd4101e
1 changed files with 2 additions and 0 deletions
--- a/tools/git/commit-time.sh
+++ b/tools/git/commit-time.sh
@ -2,4 +2,6 @@

 commit=$1

+[ -z "$commit" ] && echo "Usage: $0 commit|tag|branch" && exit 1
+
 date -d @`git log -1 --format=%ct $commit` +%Y%m%d-%H%M%S