git branch --set-upstream

一。使用场景: 本地新建一个分支后，必须要做远程分支关联。如果没有关联，git会在下面的操作中提示你显示的添加关联。关联目的是如果在本地分支下操作： git pull, git push ，不需要指定在命令行指定远程的分支．

I create a new branch in Git:

git branch my_branch

Push it:

git push origin my_branch

Now say someone made some changes on the server and I want to pull from origin/my_branch. I do:

git pull

But I get:

You asked me to pull without telling me which branch you

want to merge with, and 'branch.my_branch.merge' in

your configuration file does not tell me, either. Please

specify which branch you want to use on the command line and

try again (e.g. 'git pull ').

See git-pull(1) for details.

If you often merge with the same branch, you may want to

use something like the following in your configuration file:

    [branch "my_branch"]

    remote =

    merge =

    [remote ""]

    url =

    fetch =

See git-config(1) for details.

I learned that I can make it work with:

git branch --set-upstream my_branch origin/my_branch

注意，推送到远程分支后，默认也不是跟踪snsconnct:mater分支，你只要没有显示指定，git pull的时候，就会提示你。

二。替代：

该语法等价与在第一次提交分支时，使用git push -u origin my_branch：

一种更简单的方式用来取代不好忘记的 git branch --set-upstream 是git push -u origin my_branch

在你第一次提交你的分支的时候使用。它会像git branch --set-upstream一样在本地分支与远程分去建立联系。

通常我们在新建分支的时候，一定要显式建立这种联系。

三。类似

this  be equivalent to what is automatically done when you initially clone a repository   

附：

下面部分就是git clone之后，添加到文件里的内容。感觉git clone主要是cline仓库。用来初始化。所以，它不能取代--set-upstream.

[core]

        repositoryformatversion = 0

        filemode = true

        logallrefupdates = true

        autocrlf = false

        bare = false

[remote "origin"]

        url = ssh://root@hostname/path

        fetch = +refs/heads/*:refs/remotes/origin/*

[branch "sns"]

        remote = origin

        merge = refs/heads/sns

或者

# git remote add origin ssh://...

now configure master to know to track

# git config branch.master.remote origin

# git config branch.master.merge refs/heads/master

and push

# git push origin master

四。命令的最终修改都是针对config文件。

 使用－－set-upstream去跟踪远程分支。 

config在命令执行之前：

[core]

        repositoryformatversion = 0

        filemode = true

        bare = false

        logallrefupdates = true

        ignorecase = true

[remote "origin"]

        fetch = +refs/heads/*:refs/remotes/origin/*

        url = root@****************

[branch "master"]

        remote = origin

        merge = refs/heads/master

[remote "snsconnect"]

        url = root@app220:/*******************

        fetch = +refs/heads/*:refs/remotes/snsconnect/*

执行之后：

[branch "sns"]

        remote = snsconnect

        merge = refs/heads/sns