CentOS 安装Tab增强版:bash-completion

1. 首先安装epel源，安装很简单，只需要输入以下命令即可

$ yum install -y epel-release  
$ yum clean all
$ yum makecache

2.yum安装bash-completion

$ yum install -y bash-completion

参考：
[1] http://blog.51cto.com/ultraera/1584383