I offer this as something to keep in your back pocket if you need to automate more elaborate dialogs with Perl: Expect.pm is a great tool to know about.

Expect.pm is built to either spawn a process or take an existing filehandle and interact with it such that normally interactive tasks can be done without operator assistance.
The CPAN doc even contains some telnet examples.

In reply to Re: Perl Script to Test Telnet Connectivity by ibm1620
in thread Perl Script to Test Telnet Connectivity by redapplesonly

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