linux 查看系统和内核版本

一，查看内核版本
1. uname -a

[root@localhost ~]# uname -a
Linux root 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 14:46:51 
UTC 2015 i686 i686 i686 GNU/Linux

2. cat /proc/version

Linux version 4.2.0-16-generic (buildd@lgw01-22) 
(gcc version 5.2.1 20151003 (Ubuntu 5.2.1-21ubuntu2) ) 
#19-Ubuntu SMP Thu Oct 8 14:46:51 UTC 2015

二，查看系统版本

1.lsb_release -a

No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 15.10
Release:    15.10
Codename:    wily

2.cat /etc/issue

Ubuntu 15.10 
 l