Ubuntu下查看Linux内核版本和系统版本

1.查看内核版本

• zengdx@ubuntu:~$ cat /proc/version
  Linux version 3.19.0-25-generic (buildd@lgw01-20) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015
  
• zengdx@ubuntu:~$ uname -a
  Linux ubuntu 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
  
• zengdx@ubuntu:~$ uname -r
  3.19.0-25-generic
  

2.查看系统版本

• zengdx@ubuntu:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 14.04.3 LTS
  Release:        14.04
  Codename:       trusty
  
• zengdx@ubuntu:~$ cat /etc/lsb-release
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=14.04
  DISTRIB_CODENAME=trusty
  DISTRIB_DESCRIPTION="Ubuntu 14.04.3 LTS"
  
• zengdx@ubuntu:~$ cat /etc/issue
  Ubuntu 14.04.3 LTS \n \l