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my @computers = grep { /\$$/ } @users;
s/\$$// foreach @computers;         # remove trailing $
@computers = join("\n",@computers);

@addr = gethostbyname($hostname);    # note: an array now
splice(@addr, 0, 4);                 # get rid of other stuff
foreach (@addr)
{
    print OUT join('.', unpack('C4', $_)), "\n";
}