配置ssh
配置git以通过ssh的方式访问git仓库
为了在不同场合使用不同的 ssh key，或者是本地ssh登录时使用和代码仓库不一样的 ssh key，就需要设置让 git 支持多个 ssh key。
最常见的，需要准备两组ssh key：一个用来本地ssh登录避免输入密码麻烦，一个用来登录github。
ssh登录的key
ssh-keygen -t rsa -C "localssh"
文件名默认id_rsa，不设置密码：
$ ssh-keygen -t rsa -C "localssh"
Generating public/private rsa key pair.
Enter file in which to save the key (/home/sky/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/sky/.ssh/id_rsa
Your public key has been saved in /home/sky/.ssh/id_rsa.pub
这样就得到 id_rsa 和 id_rsa.pub 两个文件。
将 .ssh/id_isa.pub 文件到linux服务器端：
scp ~/.ssh/id_rsa.pub sky@192.168.0.10:/home/sky
在ubuntu server服务器上运行：
mkdir -p .ssh
touch ~/.ssh/authorized_keys
cat ~/id_rsa.pub >> ~/.ssh/authorized_keys
以后简单输入 “ssh server.ip” 即可自动 SSH 登录不必输入密码。
github的key
ssh-keygen -t rsa -C "github"
文件名默认id_rsa，不设置密码：
$ ssh-keygen -t rsa -C "github"
Generating public/private rsa key pair.
Enter file in which to save the key (/home/sky/.ssh/id_rsa): id_rsa_github
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in id_rsa_github
Your public key has been saved in id_rsa_github.pub
这样就得到 id_rsa_github 和 id_rsa_github.pub 两个文件。将 id_rsa_github.pub 的内容提交到 github 即可使用。