Git操作指南：从基础到高级-优快云博客

本文链接：https://blog.youkuaiyun.com/hanmingwang/article/details/122318211

echo -e "First line.\nSecond line." >> file_name.txt is a shortcut of two commands.
git add . puts all files into “Index”.
master is a reference to the end of a branch. By convention (and by default) this is usually the main integration branch, but it doesn’t have to be. HEAD is actually a special type of reference that points to another reference. It may point to master or it may not (it will point to whichever branch is currently checked out).
On your own repository you can check where the HEAD is pointing to by running git symbolic-ref HEAD.
git reset --hard HEAD^3 deletes your cache and returns to the third parent commit.
git checkout -b dev = git branch dev + git checkout dec .
git branch displays current branch.
Suppose you’ve decided that your issue #53 work is complete and ready to be merged into your master branch. In order to do that, you’ll merge your iss53 branch into master. All you have to do is check out the branch you wish to merge into and then run the git merge command: git checkout master -> git merge iss53 -> git branch -d iss53.
git push origin HEAD:refs/for/master is used for code review.
git ls-remote show all remote branches.