查看ubuntu版本:
cat /etc/issue

输出:
Ubuntu 14.04.4 LTS \n \l

查看你所装的ubuntu系统是几位的:
uname -ar

输出:32bit一般是i686, 64bit 一般有x86_64
Linux VR 4.2.0-36-generic #41~14.04.1-Ubuntu SMP Tue Apr 19 17:04:05 UTC 2016 i686 i686 i686 GNU/Linux

查看cpu信息
/proc/cpuinfo

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