使git status不显示某些文件

有的时候，一些文件已经在git仓库中，在本地测试时又进行了一些修改，此时在查看仓库状态时，不想显示这些文件。

注意，我这里设置了快捷命令：

alias gs='git status'

比如，我现在使用gs查看到仓库状态如下：

显示如下：

gs
On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        modified:   myblog/config/pluginConfig.js
        modified:   myblog/package.json
        modified:   myblog/yarn.lock

Untracked files:
  (use "git add <file>..." to include in what will be committed)

        myblog/package-lock.json

no changes added to commit (use "git add" and/or "git commit -a")

我不想要以下几行显示出来：

        modified:   myblog/config/pluginConfig.js
        modified:   myblog/package.json
        modified:   myblog/yarn.lock

这些文件是我本地搭建环境时产生的修改，我不想写入到仓库中去，每次显示在状态中，看着很不舒服。

首先忽略掉myblog/config/pluginConfig.js，执行以下命令：

git update-index --assume-unchanged myblog/config/pluginConfig.js

执行完成后，再次查看状态：

gs
On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        modified:   myblog/package.json
        modified:   myblog/yarn.lock

Untracked files:
  (use "git add <file>..." to include in what will be committed)

        myblog/package-lock.json

no changes added to commit (use "git add" and/or "git commit -a")

可以看到，myblog/config/pluginConfig.js真的被忽略了。

再执行以下命令：

git update-index --assume-unchanged myblog/package.json

可以看到myblog/package.json也被忽略了。