查看linux版本号的几种方法
（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
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号信息。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 显示的内容同样，显示linux内核版本。
[root@enmoteam1 oracle]# cat /proc/version
Linux version 2.6.39-200.24.1.el6uek.x86_64 (mockbuild@ca-build44.us.oracle.com) (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能够看到详细的版本
[oracle@enmoteam1 ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.3 (Santiago)
[oracle@enmoteam1 ~]$
