To find the number of CPUs or Cores

There are three options to find the number of CPUs or cores on a unix server:

(1) 

 cat /proc/cpuinfo


(2) 

>grep -i "processor" /proc/cpuinfo | sort -u | wc -l


(3)

egrep -e "core id" -e ^physical /proc/cpuinfo|xargs -l2 echo|sort -u


end

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