Git如何知道要推送到哪个存储库？

Question

I'm a complete noob when it comes to version control, but I recently started using GitHub to host some of my projects. I blindly use the command git push origin master to push changes to either of the two repositories. I don't understand how Git knows which repository to push to. I use the same command to push to each. Does the directory I'm in have anything to do with it?

Thanks for clearing this up for me.

Answer 1

A word of advice, "blindly use"ing anything is a bad idea.

git has a system of remotes which allows to specify URLs and transports to repositories other than the one where you're working. git push origin master pushes the current branch to the remote called origin as the branch master. You have a remote called origin. This is created by default when you clone a repository from a URL.

Answer 2

git remote add origin http://abc.com/def/ghi.git告诉git远程'origin'指向的url。

Answer 3

When you use git push origin master , you aren't pushing to two repositories - you are pushing to the master branch in your repository who's name (alias) is origin.

Think of it like this:

I'm pushing my stuff to origin which is my repository address. What am I pushing there? My master branch.

If you are new and set git up yourself through git init, you probably aren't pushing to two repositories. Run this command to see what your remotes are:

git remote -v

This will return something like (assuming you have a git hosting service like github):

blahblah    git@github.com:yourGithubName/fileName.git (fetch)
blahblah    git@github.com:yourGithubName/fileName.git (push)

git@github.com:yourGithubName/fileName.git is your repository address. Some addresses are prefixed by https:// .

Answer 4

Git repositories contain a .git directory that contains metadata about the repository. That's what Git uses to determine where to push your changes.