#!/bin/bash

# Get first snapshot
read cpu user nice system idle iowait irq softirq steal guest < /proc/stat
total1=$((user+nice+system+idle+iowait+irq+softirq+steal))
idle1=$idle

sleep 0.5

# Get second snapshot
read cpu user nice system idle iowait irq softirq steal guest < /proc/stat
total2=$((user+nice+system+idle+iowait+irq+softirq+steal))
idle2=$idle

# Calculate usage
total_diff=$((total2 - total1))
idle_diff=$((idle2 - idle1))
cpu_usage=$((100 * (total_diff - idle_diff) / total_diff))

echo "$cpu_usage"
