有以下命令可以查看：
 
# lsb_release -a  
LSB Version:    :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch  
Distributor ID: CentOS  
Description:    CentOS release 5.4 (Final)  
Release:        5.4  
Codename:       Final
   

这个命令适用于所有的linux，包括Redhat、SuSE、Debian、Centos等发行版。
 
root@MyMail ~ # uname  
Linux  
root@MyMail ~ # uname -r  
2.6.18-164.el5  
[root@localhost ~]# uname -a  
Linux localhost.localdomain 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:35 EDT 2010 i686 i686 i386 GNU/Linux
   

以下二种方法适用于RedHat,CentOS
 
root@MyMail ~ # cat /etc/redhat-release  
CentOS release 5.4 (Final)
 
登录到linux执行rpm -q redhat-release
 
#rpm -q redhat-release  
或CentOS
 
root@MyMail ~ # rpm -q centos-release  
centos-release-5-4.el5.centos.1
   

**当前****centos** **版本与****redhat****对应的版本的命令**  
# cat /proc/version  
Linux version 2.6.9-78.ELsmp (mockbuild@builder16.centos.org) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-10)) #1 SMP Fri Jul 25 00:04:28 EDT 2008
 \> 来自 \<[https://www.cnblogs.com/zzdylan/p/9930144.html](https://www.cnblogs.com/zzdylan/p/9930144.html)\>