I was attempting something similar to read back configuration files from Netscreen firewalls a few years ago and I seem to recall as outlined in the
docs....
@vacation_str=$telnet->cmd; will output your command and then read the characters sent back up to and including the matching prompt. Which is not what I think you are trying to accomplish.
You can probably verify what is going on by using dump_log().
I would also check out attempting something like
$telnet->cmd("$CAT /home/$username/.vacation.msg");
@vacation_str=$telnet->getlines();
which should read back all the lines of data until eof is read.
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