gistfile1.sh

#!/bin/sh

tc qdisc del dev eth0 root 2> /dev/null

if [ "z$1" = "zdialup" ] ; then
  echo "Brace yourself, enabling dialup preset..."
	BANDWIDTH=56kbit
	LATENCY=200msec
elif [ "z$1" = "z2g" ] ; then
	echo "Enabling 2G preset..."
	BANDWIDTH=112kbit
	LATENCY=150msec
elif [ "z$1" = "zedge" ] ; then
	echo "Enabling EDGE preset..."
	BANDWIDTH=384kbit
	LATENCY=100msec
elif [ "z$1" = "znone" ] ; then
	echo "Throttling disabled."
	exit 0;
else
	echo "Usage: $0 (dialup|2g|edge|none) [lossy]"
	exit 0;
fi

PACKET_LOSS=2%
if [ "z$2" = "zlossy" ] ; then
	echo "...on a very lossy connection"
	PACKET_LOSS=20%
fi

tc qdisc add dev eth0 root handle 1:0 netem delay $LATENCY loss $PACKET_LOSS
tc qdisc add dev eth0 parent 1:1 handle 10: tbf rate $BANDWIDTH burst $BANDWIDTH latency $LATENCY