Git常用命令_* branch head -> fetch_head

1、git init

进入项目根目录后，执行git init

chengwen@chengwen cloud2020 % git init
Initialized empty Git repository in /Users/chengwen/GitHub/cloud2020/.git/
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通过ls -la 可以查看隐藏目录.git

chengwen@chengwen cloud2020 % ls -la
total 48
drwxr-xr-x  28 chengwen  staff   896 Apr  8 21:07 .
drwxr-xr-x   6 chengwen  staff   192 Mar 18 00:15 ..
-rw-r--r--@  1 chengwen  staff  8196 Mar  5 01:55 .DS_Store
drwxr-xr-x   9 chengwen  staff   288 Apr  8 21:07 .git
drwxr-xr-x   7 chengwen  staff   224 Mar 18 00:15 .idea
drwxr-xr-x   6 chengwen  staff   192 Mar  6 20:19 cloud-api-commons
drwxr-xr-x   6 chengwen  staff   192 Mar 14 18:37 cloud-config-center3344
drwxr-xr-x   6 chengwen  staff   192 Mar 14 23:01 cloud-config-client3355
drwxr-xr-x   6 chengwen  staff   192 Mar  6 23:33 cloud-consumer-consul-order80
-rw-r--r--   1 chengwen  staff    80 Mar  2 23:39 cloud2020.iml
drwxr-xr-x   5 chengwen  staff   160 Mar 18 00:04 cloudalibaba-provider-payment9001
-rw-r--r--   1 chengwen  staff  5079 Mar 17 23:47 pom.xml
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进入.git目录可以看到git的初始文件

该目录.git下存放的是本地库相关的子目录和文件，该目录下的文件不要轻易改动或删除

chengwen@chengwen .git % ls -l
total 24
-rw-r--r--   1 chengwen  staff   23 Apr  8 21:07 HEAD
-rw-r--r--   1 chengwen  staff  137 Apr  8 21:07 config
-rw-r--r--   1 chengwen  staff   73 Apr  8 21:07 description
drwxr-xr-x  14 chengwen  staff  448 Apr  8 21:07 hooks
drwxr-xr-x   3 chengwen  staff   96 Apr  8 21:07 info
drwxr-xr-x   4 chengwen  staff  128 Apr  8 21:07 objects
drwxr-xr-x   4 chengwen  staff  128 Apr  8 21:07 refs
chengwen@chengwen .git % pwd
/Users/chengwen/GitHub/cloud2020/.git
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设置签名

• 形式
  用户名：zhoumin
  email地址：zhoumin@163.com

• 作用
  区分不同的开发人员的身份

• 辨析
  这里设置的签名和登录远程库（代码托管中心 如：github）的账户、密码没有 任何关系。

• 命令
  1、项目级别、仓库级别：仅在当前本地库范围内有效

git config user.name zhoumin
git config user.email zhoumin@163.com
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信息保存的位置

chengwen@chengwen .git % cat config 
[core]
	repositor
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