查看ubuntu的版本号

查看ubuntu的发行版本：

1. cat /etc/issue

[martin@~]$ cat /etc/issue
Ubuntu 12.04.2 LTS n l

[martin@~]$

2. lsb_release -a

[martin@~]$ lsb_release -a
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 12.04.2 LTS
Release:    12.04
Codename:    precise
[martin@~]$

3. cat /etc/lsb_release

[martin@~]$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS"
[martin@~]$

查看kernel版本：

4. cat /proc/version

[martin@~]$ cat /proc/version
Linux version 3.2.42 (root@martin-pc) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #1 SMP Tue May 21 12:36:50 CST 2013
[martin@~]$

5. uname -r/-a

[martin@~]$ uname -r
3.2.42
[martin@~]$
[martin@~]$ uname -a
Linux martin-pc 3.2.42 #1 SMP Tue May 21 12:36:50 CST 2013 i686 i686 i386 GNU/Linux
[martin@~]$