#!/bin/sh echo "Content-type: application/json" echo "" # Get RX and TX bytes from ifconfig eth0 data=$(ifconfig eth0 | grep "RX bytes") # Extract download (RX) and upload (TX) values using awk download=$(echo $data | awk '{print $2}' | cut -d':' -f2) upload=$(echo $data | awk '{print $6}' | cut -d':' -f2) # Return JSON response echo "{" echo " \"download\": \"$download\"," echo " \"upload\": \"$upload\"" echo "}"