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等发行版。


root@MyMail ~ # uname

Linux

root@MyMail ~ # uname -r

2.6.18-164.el5


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