一、安装Git

MAC 上安装Git主要有两种方式

首先查看电脑是否安装Git，终端输入：

git

安装过则会输出：

WMBdeMacBook-Pro:~ WENBO$ git

usage: git [--version] [--help] [-C <path>] [-c name=value]

           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]

           [-p | --paginate | --no-pager] [--no-replace-objects] [--bare]

           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]

           <command> [<args>]

These are common Git commands used in various situations:

start a working area (see also: git help tutorial)

   clone      Clone a repository into a new directory

   init       Create an empty Git repository or reinitialize an existing one

work on the current change (see also: git help everyday)

   add        Add file contents to the index

   mv         Move or rename a file, a directory, or a symlink

   reset      Reset current HEAD to the specified state

   rm         Remove files from the working tree and from the index

examine the history and state (see also: git help revisions)

   bisect     Use binary search to find the commit that introduced a bug

   grep       Print lines matching a pattern

   log        Show commit logs

   show       Show various types of objects

   status     Show the working tree status

grow, mark and tweak your common history

   branch     List, create, or delete branches

   checkout   Switch branches or restore working tree files

   commit     Record changes to the repository

   diff       Show changes between commits, commit and working tree, etc

   merge      Join two or more development histories together

   rebase     Reapply commits on top of another base tip

   tag        Create, list, delete or verify a tag object signed with GPG

collaborate (see also: git help workflows)

   fetch      Download objects and refs from another repository

   pull       Fetch from and integrate with another repository or a local branch

   push       Update remote refs along with associated objects

'git help -a' and 'git help -g' list available subcommands and some

concept guides. See 'git help <command>' or 'git help <concept>'

to read about a specific subcommand or concept.

1、通过homebrew安装Git

• 1、未安装homebrew，需安装homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

• 2、安装git

brew install git

2、通过Xcode安装

直接从AppStore安装Xcode，Xcode集成了Git，不过默认没有安装，你需要运行Xcode，选择菜单“Xcode”->“Preferences”，在弹出窗口中找到“Downloads”，选择“Command Line Tools”，点“Install”就可以完成安装了。

二、创建ssh key、配置git

• 1、设置username和email（github每次commit都会记录他们）

git config --global user.name "wenbo"

git config --global user.email "1050794513@qq.com"

• 2、通过终端命令创建ssh key

ssh-keygen -t rsa -C "1050794513@qq.com"

1050794513@qq.com是我的邮件名，回车会有以下输出

Last login: Sat Jan   :: on ttys000

WMBdeMacBook-Pro:~ WENBO$ ssh-keygen -t rsa -C "1050794513@qq.com"

Generating public/private rsa key pair.

Enter file in which to save the key (/Users/WENBO/.ssh/id_rsa):

/Users/WENBO/.ssh/id_rsa already exists.

Overwrite (y/n)? n

WMBdeMacBook-Pro:~ WENBO$ 

由于这里我原来已经创建过，这里我选n，没有创建过的，会要求确认路径和输入密码，我们这使用默认的一路回车就行。成功的话会在~/下生成.ssh文件夹，进去，打开id_rsa.pub，复制里面的key。
终端查看.ssh/id_rsa.pub文件

open .ssh/id_rsa.pub 

回车后，就会新弹出一个终端，然后复制里面的key。
或者用cat命令查看

cat .ssh/id_rsa.pub

• 3、登录GitHub（默认你已经注册了GitHub账号），添加ssh key，点击Settings，如图

ssh -T git@github.com 

Last login: Sat Jan   :: on ttys000

WMBdeMacBook-Pro:~ WENBO$ ssh -T git@github.com

Hi wenmobo! You've successfully authenticated, but GitHub does not provide shell access.

WMBdeMacBook-Pro:~ WENBO$ 

cd /Users/WENBO/Desktop/

git clone git@github.com:wenmobo/LearnGit.git

Last login: Sat Jan   :: on ttys000

WMBdeMacBook-Pro:~ WENBO$ cd /Users/WENBO/Desktop/

WMBdeMacBook-Pro:Desktop WENBO$ git clone git@github.com:wenmobo/LearnGit.git

Cloning into 'LearnGit'...

remote: Counting objects: , done.

remote: Compressing objects: % (/), done.

remote: Total  (delta ), reused  (delta ), pack-reused

Receiving objects: % (/), 5.2

cd /Users/WENBO/Desktop/LearnGit 

//文件添加到仓库（.代表提交所有文件）

git add .

//把文件提交到仓库

git commit -m "First Commit"

//上传到github

git push

Last login: Sat Jan   :: on ttys000

WMBdeMacBook-Pro:~ WENBO$ cd /Users/WENBO/Desktop/LearnGit

WMBdeMacBook-Pro:LearnGit WENBO$ git add .

WMBdeMacBook-Pro:LearnGit WENBO$ git commit -m "First Commit"

[master ae3bbe9] First Commit

  files changed,  insertions(+)

 create mode  LearnGitDemo/LearnGitDemo.xcodeproj/project.pbxproj

 create mode  LearnGitDemo/LearnGitDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata

 create mode  LearnGitDemo/LearnGitDemo/AppDelegate.h

 create mode  LearnGitDemo/LearnGitDemo/AppDelegate.m

 create mode  LearnGitDemo/LearnGitDemo/Assets.xcassets/AppIcon.appiconset/Contents.json

 create mode  LearnGitDemo/LearnGitDemo/Base.lproj/LaunchScreen.storyboard

 create mode  LearnGitDemo/LearnGitDemo/Base.lproj/Main.storyboard

 create mode  LearnGitDemo/LearnGitDemo/Info.plist

 create mode  LearnGitDemo/LearnGitDemo/ViewController.h

 create mode  LearnGitDemo/LearnGitDemo/ViewController.m

 create mode  LearnGitDemo/LearnGitDemo/main.m

WMBdeMacBook-Pro:LearnGit WENBO$ git push

Warning: Permanently added the RSA host key for IP address '192.30.255.112' to the list of known hosts.

Counting objects: , done.

Delta compression using up to  threads.

Compressing objects: % (/), done.

Writing objects: % (/), 6.80 KiB |  bytes/s, done.

Total  (delta ), reused  (delta )

remote: Resolving deltas: % (/), done.

To github.com:wenmobo/LearnGit.git

   ..ae3bbe9  master -> master

WMBdeMacBook-Pro:LearnGit WENBO$