git checkout -b

git checkout -b 命令用于创建一个新的分支并切换到该分支。可以在命令后面指定分支名称，例如：

git checkout -b new_branch

这条命令会创建一个名为new_branch的新分支，并将HEAD指向该分支。在新分支上进行的所有修改都不会影响到原来的分支。

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git checkout-b

`git checkout -b` is a Git command used to create and switch to a new branch in one step. It combines two separate commands: `git branch` and `git checkout`.

The `-b` option creates a new branch with the given name, and then checks it out. For example, if you want to create a new branch called "feature-branch" and switch to it, you can use the following command:

git checkout -b feature-branch

This command is useful when you want to start working on a new feature or bug fix in a separate branch without interrupting your current work on the main branch.

git checkout -b zhangxiadev

这个命令会创建一个名为 zhangxiadev 的新分支，并且将当前分支切换到这个新分支上。你可以在新分支上进行修改代码，而不会影响到原来的分支。如果需要切换回原来的分支，可以使用 git checkout 命令再次切换回去。例如：

git checkout -b zhangxiadev  // 创建并切换到新分支
// 在新分支上进行代码修改
git add .
git commit -m "some changes"
git checkout master  // 切换回原来的分支