CentOS的yum源中没有git，只能自己编译安装，现在记录下编译安装的内容，留给自己备忘。
确保已安装了依赖的包
| yum install curl |
| yum install curl-devel |
| yum install zlib-devel |
| yum install openssl-devel |
| yum install perl |
| yum install cpio |
| yum install expat-devel |
| yum install gettext-devel |
下载最新的git包
| wget http://www.codemonkey.org.uk/projects/git-snapshots/git/git-latest.tar.gz |
| tar xzvf git-latest.tar.gz |
| cd git-2011-11-30＃你的目录可能不是这个 |
| autoconf |
| ./configure |
| make |
| sudo make install |
检查下安装的版本，大功告成
| git --version |
通过ssh 进行认证连接git
ssh-keygen -C "你的email地址" -t rsa
scp ~/.ssh/id_rsa.pub git@服务器:~/.ssh/
ssh git@服务器
cat ~/.ssh/id_rsa.pub >> authorized_keys
chmod 755 /home/git
chmod 700 /home/git/.ssh
chmod 644 /home/git/.ssh/authorized_keys
事实上可以ssh-keygen -t rsa，然后不输入任何东西，一直回车就可以了。生成的文件在~/.ssh/目录下