Basically, you need to know when the telnet/SSH session is prompting for input.
How to get around that problem?

Net::Telnet
Make the prompt something you know, see here: Re: Net::Telent - How to get the prompt displayed after login using telnet?
Then send the input, see here: Interactive input via telnet

With Net::Telnet, it's all a matter of using cmd(), waitfor() and print()

For SSH, you might try taking a look at Net::SSH::Expect
I haven't searched here but I bet there's plenty of examples to be found.

In reply to Re^2: Sending and receiving data to standard input and output of the linux based server. by regexes
in thread Sending and receiving data to standard input and output of the linux based server. by Exploringperl

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