一、git diff
diffInfo=`git diff` if [ "$diffInfo" = "" ]; then echo '本地没有变化无需提交' exit fi
二、git status
On branch feature/20191218-songyongzhan-test Your branch is up to date with 'origin/feature/20191218-songyongzhan-test'. Untracked files: (use "git add <file>..." to include in what will be committed) src/Map/RedisKey/Keys/vvv.php nothing added to commit but untracked files present (use "git add" to track)
这两种方式都能检测到本地是否发生变化，
这里推荐使用第二种方式 git status
区别：
git status 在新增文件后，可以检测到 nothing added to commit 我们可以得到这样的信息
git diff 不会得到任何的信息，git diff 只能检测出已经存在的文件发生变化，才能检测出。
lastMessage=`git status | tail -n 2` #nothing to commit, working tree clean 本地没有变化 noCommit='nothing to commit' if [[ $lastMessage =~ $noCommit ]]; then echo "无需提交" exit fi