如何獲得Linux版本資訊

1. 使用lsb_release -a
   $ lsb_release -a
   No LSB modules are available.
   Distributor ID: Ubuntu
   Description: Ubuntu 13.04
   Release: 13.04
   Codename: raring
2. 使用uname -r
   $ uname -r
   3.8.0-27-generic
3. 使用uname -a
   $ uname -a
   Linux xxx-lubuntu 3.8.0-27-generic #40-Ubuntu SMP Tue Jul 9 00:19:35 UTC 2013 i686 i686 i686 GNU/Linux
4. 使用cat /etc/issue*
   $ cat /etc/issue*
   Ubuntu 13.04 \n \l
   
   Ubuntu 13.04