服务器上的git版本太低，很多东西不能用了，要升级
(1) 卸载之前的git
git --versiongit version 1.7.1
yum remove git
(2) 安装依赖的包
yum update
yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel
(3) 下载git源码并解压缩
wget https://github.com/git/git/archive/v2.12.2.tar.gz
tar -zxvfv2.12.2.tar.gz
(4) 编译安装
cdgit-2.12.2
make configure
./configure --prefix=/usr/local/git
make profix=/usr/local/git
make install
(5) 将git安装路径添加到PATH变量或者软链也行
不写了
