自动补全 auto completion

centos 7 最小化安装，装完默认的自动补全功能很少，比如 “sudo yum inst”,这是 tab 键不能自动补全。需要下面命令

  1. # yum install bash-completion bash-completion-extras
  2. # source /etc/profile.d/bash_completion.sh //运行此命令，或者 logout & login again.

How to Install EPEL Repo on CentOS 7.x

  1. # yum search epel-release
  2. # yum info epel-release
  3. # yum install epel-release