linux see how much each cpu usage code example

Example 1: chcek number of cpus available on linux machine

lscpu | egrep 'CPU\(s\)'

Example 2: get current cpu utilization in percentage linux

awk '{u=$2+$4; t=$2+$4+$5; if (NR==1){u1=u; t1=t;} else print ($2+$4-u1) * 100 / (t-t1) "%"; }' \
<(grep 'cpu ' /proc/stat) <(sleep 1;grep 'cpu ' /proc/stat)