if (-f $file) {
    open CONF, "<$file";
    my @contents = <CONF>;
    close CONF;

    foreach $content (@contents) {
        my @config = split /-/,$content;
        if ($content =~ /DEFAULT_IN/) {
            $default_in = $config[1];
            chomp($default_in);
        } elsif ($content =~ /DEFAULT_OUT/) {
            $default_out = $config[1];
            chomp($default_out);
        }
    }
}