查看linux版本的几种方法

（1）lsb_release 命令查看，FSG（Free Standards Group）组织开发的LSB (Linux Standard Base)标准的一个命令，用来查看linux兼容性的发行版信息

[root@enmoteam1 oracle]# lsb_release -h

FSG lsb_release v2.0 prints certain LSB (Linux Standard Base) and
Distribution information.


Usage: lsb_release [OPTION]...
With no OPTION specified defaults to -v.


Options:
  -v, --version
    Display the version of the LSB specification against which the distribution is compliant.
  -i, --id
    Display the string id of the distributor.
  -d, --description
    Display the single line text description of the distribution.
  -r, --release
    Display the release number of the distribution.
  -c, --codename
    Display the codename according to the distribution release.
  -a, --all
    Display all of the above information.
  -s, --short
    Use short output format for information requested by other options (or version if none).
  -h, --help
    Display this message.
[root@enmoteam1 oracle]# lsb_release -v
LSB Version:    :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
[root@enmoteam1 oracle]# lsb_release -i
Distributor ID: RedHatEnterpriseServer
[root@enmoteam1 oracle]# lsb_release -d
Description:    Red Hat Enterprise Linux Server release 6.3 (Santiago)
[root@enmoteam1 oracle]# c
-bash: c: command not found
[root@enmoteam1 oracle]# lsb_release -c
Codename:       Santiago
[root@enmoteam1 oracle]# lsb_release -a
LSB Version:    :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: RedHatEnterpriseServer
Description:    Red Hat Enterprise Linux Server release 6.3 (Santiago)
Release:        6.3
Codename:       Santiago
[root@enmoteam1 oracle]# lsb_release -s
:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch

[root@enmoteam1 oracle]# 

（2）/etc/issue查看，是系统安装时默认的发行版本信息，通常安装好系统后文件内容不会发生变化

[root@enmoteam1 oracle]# cat  /etc/issue
Oracle Linux Server release 6.3
Kernel \r on an \m


[root@enmoteam1 oracle]# 

(3)/proc/version 和 uname -a 显示的内容相同，显示linux内核版本号。

[root@enmoteam1 oracle]# cat /proc/version
Linux version 2.6.39-200.24.1.el6uek.x86_64 ([email protected]) (gcc version 4.4.6 20110731 (Red Hat 4.4.6-3) (GCC) ) #1 SMP Sat Jun 23 02:39:07 EDT 2012
[root@enmoteam1 oracle]# uname -r
2.6.39-200.24.1.el6uek.x86_64
[root@enmoteam1 oracle]# uname -a
Linux enmoteam1 2.6.39-200.24.1.el6uek.x86_64 #1 SMP Sat Jun 23 02:39:07 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
[root@enmoteam1 oracle]# 

(4)/etc/redhat-release可以看到具体的版本号
[oracle@enmoteam1 ~]$ cat /etc/redhat-release                               
Red Hat Enterprise Linux Server release 6.3 (Santiago)
[oracle@enmoteam1 ~]$