linux系统版本命令

linux系统版本命令一、查看系统内核版本命令：

1）[root@pgserver04 ~]# cat /proc/version
Linux version 2.6.18-238.el5PAE (mockbuild@ls20-bc2-13.build.redhat.com) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)) #1 SMP Sun Dec 19 14:42:44 EST 2010
[root@pgserver04 ~]#

2）[root@pgserver04 ~]# uname -r
2.6.18-238.el5PAE

3）[root@pgserver04 ~]# uname -a
Linux pgserver04 2.6.18-238.el5PAE #1 SMP Sun Dec 19 14:42:44 EST 2010 i686 i686 i386 GNU/Linux
[root@pgserver04 ~]#

二、查看linux版本：1）执行 lsb_release -a ,即可列出所有版本信息：

[root@pgserver04 ~]# lsb_release -a
LSB Version:    :core-4.0-ia32:core-4.0-noarch:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-ia32:printing-4.0-noarch
Distributor ID: RedHatEnterpriseServer
Description:    Red Hat Enterprise Linux Server release 5.6 (Tikanga)
Release:        5.6
Codename:       Tikanga

注:这个命令适用于所有的linux，包括Redhat、SuSE、Debian等发行版。2） 执行cat /etc/issue,例如如下:

[root@pgserver04 ~]# cat /etc/issue
Red Hat Enterprise Linux Server release 5.6 (Tikanga)
Kernel \r on an \m

3） 执行cat /etc/redhat-release

[root@pgserver04 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.6 (Tikanga)
[root@pgserver04 ~]#

注:这种方式下可以直接看到具体的版本号，比如 AS4 Update 14）执行rpm -q redhat-release ,例如如下:

[root@pgserver04 ~]# rpm -q redhat-release
redhat-release-5Server-5.6.0.3
[root@pgserver04 ~]#

注:这种方式下可看到一个所谓的release号，比如上边的例子是5这个release号和实际的版本之间存在一定的对应关系，如下：

　　redhat-release-3AS-1 -> Redhat Enterprise Linux AS 3
　　redhat-release-3AS-7.4 -> Redhat Enterprise Linux AS 3 Update 4
　　redhat-release-4AS-2 -> Redhat Enterprise Linux AS 4
　　redhat-release-4AS-2.4 -> Redhat Enterprise Linux AS 4 Update 1
　　redhat-release-4AS-3 -> Redhat Enterprise Linux AS 4 Update 2
　　redhat-release-4AS-4.1 -> Redhat Enterprise Linux AS 4 Update 3
　　redhat-release-4AS-5.5 -> Redhat Enterprise Linux AS 4 Update 4

注：第3)、4)两种方法只对Redhat Linux有效

5）[root@pgserver04 ~]# file /bin/bash
/bin/bash: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
[root@pgserver04 ~]#

6）[root@pgserver04 ~]# file /bin/cat
/bin/cat: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
[root@pgserver04 ~]#