Shell Programming and Scripting

Code:

#!/bin/sh

for ip in $(cat /root/Desktop/ftp.txt) 
do

HOST=$ip
USER='bob'
PASS='bob'
ftp -n $HOST <<EOF
user bob bob
EOF
echo "$ip"
done

the Above code i want to use check and verify login works on multiple ftp servers on my network. However the ftp servers are dynamic in setup and change between a range of ip's. So this script does what i need, except when an ftp server is down it freezes, because there is no timeout. If someone could please give a suggestion as to what i could do, i would appreciate it. I know this is a simple buggy script, but im just starting out and want to get it to work.

Cheers,