shaper.sh

#!/bin/sh

case "$1" in
start)
  tc qdisc add dev lo root handle 1: htb default 1
  tc class add dev lo parent 1: classid 1:1 htb rate 80kbps #ceil 80kbps 
  tc filter add dev lo protocol ip parent 1: prio 1 u32 match ip dport 80 0xffff flowid 1:1
;;

status)
  tc -s qdisc ls dev lo
  echo "~~~"
  tc -s class ls dev lo
  echo "~~~"
  tc -s filter ls dev lo
;;

stop)
  tc qdisc del dev lo root
;;

*)
  echo "usage: ./shaper start|status|stop"

esac