centos 查看系統版本命令

1 lsb_release -a 命令

[root@iz2zehbmmjvren7bs4we3xz /]# lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID:    CentOS
Description:    CentOS Linux release 7.3.1611 (Core) 
Release:    7.3.1611
Codename:    Core

2 uname 命令
[root@iz2zehbmmjvren7bs4we3xz /]# uname
Linux
[root@iz2zehbmmjvren7bs4we3xz /]# uname -r
3.10.0-514.26.2.el7.x86_64

3 查看版本文件

[root@iz2zehbmmjvren7bs4we3xz /]# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 

4 rpm命令查看

[root@iz2zehbmmjvren7bs4we3xz /]# rpm -q redhat-release
package redhat-release is not installed

若是上面命令不行能夠用下面的
[root@iz2zehbmmjvren7bs4we3xz /]# rpm -q centos-release
centos-release-7-3.1611.el7.centos.x86_64
[root@iz2zehbmmjvren7bs4we3xz /]#