1、lsb_release -a
[root@node1484 tools]# lsb_release -a LSB Version: :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch Distributor ID: CentOS Description: CentOS Linux release 7.2.1511 (Core) Release: 7.2.1511 Codename: Core
使用该命令是如果提示：
[root@node1483 ~]# lsb_release -a -bash: lsb_release: 未找到命令
使用命令安装：yum install -y redhat-lsb
2、cat /etc/redhat-release
适用于RedHat、CentOS
[root@node1484 tools]# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core)