使用最小安装的centos 7时有很多命令工具尚未被安装，例如 ifconfig, 那怎知道此命令在那个package里面呢？
# yum whatprovides ifconfig Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.btte.net * extras: mirrors.skyshe.cn * updates: mirrors.skyshe.cn net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools Repo : base Matched from: Filename : /sbin/ifconfig
接下来就可以进行安装
# yum install net-tools