1.安裝編譯git時需要的包，提前安裝

# yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel
# yum install gcc perl-ExtUtils-MakeMaker

2.刪除已有的git（*為萬用字元）

# yum -y remove git*

# cd /usr/src
# wget https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.9.5.tar.gz
# tar xzf git-2.9.5.tar.gz

4.執行編譯安裝

# cd git-2.9.5
# make prefix=/usr/local/git all
# make prefix=/usr/local/git install
# echo "export PATH=$PATH:/usr/local/git/bin" >> /etc/bashrc
# source /etc/bashrc

5.檢查一下版本號，輸出 git version 2.9.5 

# git --version

6.新增使用者組

TODO

參考教程網站： http://www.cnblogs.com/dee0912/p/5815267.html 
遇到問題疑惑： http://yanue.net/post-163.html