Linux查看cpu个数

简单点 

1. 查看物理CPU的个数 
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l 

2. 查看逻辑CPU的个数 
#cat /proc/cpuinfo |grep "processor"|wc -l 

3. 查看CPU是几核 
#cat /proc/cpuinfo |grep "cores"|uniq 

4. 查看CPU的主频 
#cat /proc/cpuinfo |grep MHz|uniq