git官网下载地址：
window版地址：https://git-scm.com/downloads
linux版:https://mirrors.edge.kernel.org/pub/software/scm/git/

安装前：

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

下载到linux上：

wget https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.9.5.tar.gz

解压：

tar zxvf git-2.9.5.tar.gz

进去文件夹然后进行安装命令

make prefix=/usr/local/git all
make prefix=/usr/local/git install

改配置文件

  vim /etc/profile
#在文件最后加入下面
　export PATH=$PATH:/usr/local/git/bin

保存退后：

source /etc/profile