#!/bin/sh
#URL List
url1="http://www.bbc.co.uk"
url2="http://www.cnn.com"
url3="http://www.msn.com"

#Number of users to mimic simultaneously
users=20

for (( c=1; c<=$users; c++ ))
do 
(
wait=`echo $(( RANDOM% 120 + 30 ))`
rand=`echo $(( RANDOM% 3 + 1 ))`
url=url"$rand"
wget -p $url
sleep $wait
)&
done