linux-升级git

升级linux系统中默认git版本

1. 安装前置需求:
   yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel asciidoc
   yum install gcc perl-ExtUtils-MakeMaker

2. 卸载Centos自带git1.7.1:
   yun remove git

3. 下载git2.2.1并将git添加到环境变量中
   wget https://github.com/git/git/archive/v2.2.1/tar/gz
   tar zxvf v2.2.1.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=$PAT:/usr/local/git/bin" >>/etc/bashrc
   source /etc/bashrc