How to obtain the number of CPUs/cores in Linux from the command line?
bash, cpu, cpu-cores, linux
Solution
grep -c ^processor /proc/cpuinfo
will count the number of lines starting with "processor" in `/proc/cpuinfo`
For systems with hyper-threading, you can use
grep ^cpu\\scores /proc/cpuinfo | uniq | awk '{print $4}'
which should return (for example) `8` (whereas the command above would return `16`)
Problem
I have this script, but I do not know how to get the last element in the printout: ``` cat /proc/cpuinfo | awk '/^processor/{print $3}' ``` The last element should be the number of CPUs, minus 1.