安装需求
yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel
yum install gcc perl-ExtUtils-MakeMaker
卸载Centos自带的git1.7.1
通过git –version查看系统带的版本，Cento6.5应该自带的是git版本是1.7.1
yum remove git
下载git最新版本
cd /usr/local/webserver
wget https://www.kernel.org/pub/software/scm/git/git-2.7.2.tar.gz
tar xzf git-2.7.2.tar.gz
安装git并添加到环境变量中
cd git-2.7.2
make prefix=/usr/local/git all
make prefix=/usr/local/git install
echo "export PATH=$PATH:/usr/local/git/bin" >> /etc/profile
source /etc/profile
查看版本号
git --version
git version 2.7.2
