linux 常用命令

1.查看Ubuntu版本信息等。

  1.1    产看ubuntu版本号    

cat /etc/issue//显示//ubuntu 12.04.3 LTS \n \l

uname -a//显示//Linux ***-desktop 3.2.0-57-generic #87-Ubuntu SMP Tue Nov 12 21:38:12 UTC 2013 i686 i686 i386 GNU/Linux

cat /proc/version//显示//Linux version 3.2.0-57-generic (buildd@lamiak) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #87-Ubuntu SMP Tue Nov 12 21:38:12 UTC 2013

lsb_release -a//显示//No LSB modules are available.//Distributor ID:Ubuntu//Description:Ubuntu 12.04.3 LTS//Release:12.04//Codename:precise

 1.2  查看ubuntu是32位还是64位

getconf LONG_BIT//显示//32