1、输入"uname -a ",可显示电脑以及操作系统的相关信息。

$ uname -a
Linux hadoop02.zjl.com 2.6.32-696.el6.x86_64 #1 SMP Tue Mar 21 19:29:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

2、输入"cat /proc/version",说明正在运行的内核版本。

$ cat /proc/version
Linux version 2.6.32-696.el6.x86_64 (mockbuild@c1bm.rdu2.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-18) (GCC) ) #1 SMP Tue Mar 21 19:29:05 UTC 2017

3、输入"cat /etc/issue", 显示的是发行版本信息

$ cat /etc/issue
CentOS release 6.9 (Final)
Kernel \r on an \m