查看linux系统版本号命令

一。查看内核版本号命令：

1） [root@SOR_SYS ~]# cat /proc/version
Linux version 2.6.18-238.el5 ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)) #1 SMP Sun Dec 19 14:22:44 EST 2010
[root@SOR_SYS ~]#

2）[root@SOR_SYS ~]# uname -r
2.6.18-238.el5
3）[root@SOR_SYS ~]# uname -a
Linux SOR_SYS.99bill.com 2.6.18-238.el5 #1 SMP Sun Dec 19 14:22:44 EST 2010 x86_64 x86_64 x86_64 GNU/Linux
[root@SOR_SYS ~]#

二。查看linux版本号：

1) 登录到server运行 lsb_release -a ,就可以列出全部版本号信息,比如:

[root@SOR_SYS ~]# lsb_release -a
LSB Version:    :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch
Distributor ID: RedHatEnterpriseAS
Description:    Red Hat Enterprise Linux AS release 4 (Nahant Update 4)
Release:        4
Codename:       NahantUpdate4
[root@SOR_SYS ~]#

注:这个命令适用于全部的linux，包含Redhat、SuSE、Debian等发行版。

2) 登录到linux运行cat /etc/issue,比如例如以下:

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

[root@SOR_SYS ~]#

3) 登录到linux运行cat /etc/redhat-release ,比如例如以下:

[root@SOR_SYS ~]# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 4)
[root@SOR_SYS ~]#

注:这样的方式下能够直接看到详细的版本，比方 AS4 Update 1

4)登录到linux运行rpm -q redhat-release ,比如例如以下:

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

注:这样的方式下可看到一个所谓的release号，比方上边的样例是5

这个release号和实际的版本号之间存在一定的相应关系，例如以下：

　　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

另:第3)、4)两种方法仅仅对Redhat Linux有效

5) [root@SOR_SYS ~]# file /bin/bash
/bin/bash: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
[root@SOR_SYS ~]#

6) [root@SOR_SYS ~]# file /bin/cat
/bin/cat: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
[root@SOR_SYS ~]#