xxx@xxx-pc:/tmp$ cat /etc/issue
elementary OS Freya \n \l

xxx@xxx-pc:/tmp$ lsb_release -a
No LSB modules are available.
Distributor ID:    elementary OS
Description:    elementary OS Freya
Release:    0.3.2
Codename:    freya

xxx@xxx-pc:/tmp$ cat /proc/version
Linux version 3.19.0-26-generic (buildd@lgw01-04) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #28~14.04.1-Ubuntu SMP Wed Aug 12 14:09:17 UTC 2015

内核版本：
xxx@xxx-pc:/tmp$ uname -r
3.19.0-26-generic

系统类型：
xxx@xxx-pc:~$ uname -m
x86_64

处理器类型：
xxx@xxx-pc:~$ uname -p
x86_64