running script *inside* telnet

How can I run a script inside telnet?
I don't need to wait for an input, just send some text.
I tried "telnet address < script", where script is the script file, but it's too fast and the connection is lost.
I wrote a tiny filter that copies stdin to stdout after sleeping for a few seconds, but it also fails. I use it like this:
"cat script | delay | telnet address"
What am I doing wrong?
yairhAsked:
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ragnarCommented:
Do the following as an example:

cat >> /homepath/telnet.error <<-EOF
telnet [host]
username
password
commands
...
...
...
logout
EOF

it is very important that you put no white spaces in the front or behind the commands or it won't work.  you can declare some of the items to be variables and the shell will expand them for you.  i would reccomend stripping read privs off the script since it must have the username & password in it.  you can do that by typeing chmod g-wrx,o-wrx [filename].

good luck and ask if you have questions!

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