Linux CPU usage percentage how linux calculate it code example

Example 1: linux check cpu usage

lscpu

# Or
cat /proc/cpuinfo

Example 2: get current cpu utilization in percentage linux

top -bn1 | grep "Cpu(s)" | \
           sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | \
           awk '{print 100 - $1"%"}'