linux 查看系统版本

时间：2010-09-21 来源：admin126com

几种查看linux版本信息的方法：

详解 lsb_release -a

登录到服务器执行 lsb_release -a ，即可列出所有版本信息，例如：
1. [[email protected] ~]# lsb_release -a
2. LSB Version: 1.3
3. Distributor ID: RedHatEnterpriseAS
4. Description: Red Hat Enterprise Linux AS release 4 (Nahant Update 1)
5. Release: 4
6. Codename: NahantUpdate1
7. [[email protected] ~]#
这个命令适用于所有的linux，包括Redhat、SuSE、Debian等发行版。
登录到linux执行cat /etc/redhat-release ，例如如下：
1. [[email protected] ~]# cat /etc/redhat-release
2. Red Hat Enterprise Linux AS release 4 (Nahant Update 1)
3. [[email protected] ~]#
这种方式下可以直接看到具体的版本号，比如 AS4 Update 1
登录到linux执行rpm -q redhat-release ，例如如下
1. [[email protected] ~]# rpm -q redhat-release
2. redhat-release-4AS-2.4
3. [[email protected] ~]#
这种方式下可看到一个所谓的release号，比如上边的例子是2.4
这个release号和实际的版本之间存在一定的对应关系，如下：
1. redhat-release-3AS-1 -> Redhat Enterprise Linux AS 3
2. redhat-release-3AS-7.4 -> Redhat Enterprise Linux AS 3 Update 4
3. redhat-release-4AS-2 -> Redhat Enterprise Linux AS 4
4. redhat-release-4AS-2.4 -> Redhat Enterprise Linux AS 4 Update 1
5. redhat-release-4AS-3 -> Redhat Enterprise Linux AS 4 Update 2
6. redhat-release-4AS-4.1 -> Redhat Enterprise Linux AS 4 Update 3
7. redhat-release-4AS-5.5 -> Redhat Enterprise Linux AS 4 Update 4
注意：第2、3两种方法只对Redhat Linux有效