centos 6.5下，安装git2.2.1

一、 卸载老版本git1.7.1
yum remove git

二、 安装编译git源码所需要的工具
yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel asciidoc
yum install  gcc perl-ExtUtils-MakeMaker 
yum install xmlto

三、下载git源码
wget -o git-2.2.1.tar.gz https://github.com/git/git/archive/v2.2.1.tar.gz tar xf git-2.2.1.tar.gz
cd git-2.2.1
make configure
./configure --prefix=/usr/local/git --with-iconv=/usr/local/libiconv
make all doc
make install install-doc install-html
echo "export PATH=$PATH:/usr/local/git/bin" >> /etc/bashrc
source /etc/bashrc

四、查看git版本

git --version