问题:lsb_release 是查看系统版本信息的工具
[root ~]# lsb_release -a
-bash: lsb_release: command not found解决方法:yum install redhat-lsb -y
[root ~]# lsb_release -a LSB Version: :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0- noarch:printing-4.0-amd64:printing-4.0-noarch Distributor ID: CentOS Description: CentOS Linux release 6.0 (Final) Release: 6.0 Codename: Final