That code does not even compile for me. Does it compile for you?
my $workdir=~/txt;
I changed that to:
my $workdir="~/txt";
but it would be better as:
my $workdir = "$ENV{HOME}/txt";
I also changed
BAD-IPS to
BADIPS everywhere.
Those changes got the code to compile.
One explanation for not getting any output is that your while loop is never entered -- check to see if the bad-ips file is empty. Also, try to print something before the while loop.
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