What is the difference between “git branch” and “git checkout -b”?

问题

I used git checkout -b to create a new branch. I think that git branch does the same thing. How do these two commands differ, if they differ at all?

回答1:

git checkout -b BRANCH_NAME creates a new branch and checks out the new branch while git branch BRANCH_NAME creates a new branch but leaves you on the same branch.

In other words git checkout -b BRANCH_NAME does the following for you.

git branch BRANCH_NAME    # create a new branch
git checkout BRANCH_NAME  # then switch to the new branch

回答2:

git branch creates the branch but you remain in the current branch that you have checked out.

git checkout -b creates a branch and checks it out.

It is the short for:

git branch name
git checkout name

回答3:

• git branch: Shows all your branches
• git branch newbranch: Creates a new branch
• git checkout -b newbranch: Creates a new branch and switches to that branch immediately. This is the same as git branch newbranch followed by git checkout newbranch.

回答4:

Full syntax:

git checkout -b [NEW_BRANCH] [FROM_BRANCH]

The [FROM_BRANCH] is optional. If there's no FROM_BRANCH, git will use the current branch.

回答5:

There is also another flag to mention, which is relative to these..

git checkout -B BRANCH_NAME

This is a very useful command that i've been using recently. This command checks out the branch you specify, and resets the branch based on the source branch.

回答6:

There are forms of both commands that are similar (looking at git-scm docs Version 2.11.1):

git branch <branchname> <start-point>

and

git checkout -b <new_branch> <start_point>

The latter executing the branch command first and then adding the checkout. In that form explicitly references to git-branch's doc:

Specifying -b causes a new branch to be created as if git-branch[2] were called and then checked out

回答7:

Essentially :

A-git branch lets you create a branch plain and simple.

B -git checkout -b allows you to create a branch and switch to it at the same time.

When will you use which ? 1- git branch when you want to create a branch but stay on the current branch. 2- git checkout -b when you want to create and switch. If you look at it is intuitive to create a branch and switch to it. So the choice is yours :)

来源：https://stackoverflow.com/questions/7987687/what-is-the-difference-between-git-branch-and-git-checkout-b