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
下载git2.1.2并将git添加到环境变量中
下载git最新版本
# cd /usr/src
# wget https://www.kernel.org/pub/software/scm/git/git-2.1.2.tar.gz
# tar xzf git-2.1.2.tar.gz
安装git并添加到环境变量中
# cd git-2.1.2
# 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
查看版本号
# git --version
git version 2.1.2