1.卸载Centos自带的git1.7.1:
yum remove git
2. 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 (有可能缺少lib:yum install zlib-devel asiidoc xmlto curl-devel)
># make install install-doc install-html
># echo "export PATH=$PATH:/usr/local/git/bin" >> /etc/bashrc
># source /etc/bashrc
3.查看版本号
># git --version