You pointed me in the right direction! The script works even
though I get that annoying "use of uninitialized value of $1 and $2
in concatenation(.) or string at my print $out statement line.
Should I be concerned about that?
my $dir = 'C:/Documents and Settings/mydir/Desktop/current/Test_Files'
+;
# directory to search
opendir my $dh, "$dir"; 
my $i=1;
while(my $f = readdir($dh)) {
    next if -d "$dir/$f";
    open(my $in, "$dir/$f");
    open(my $out,  ">C:/Documents and Settings/mydir/Desktop/current/T
+est_Files/outfiles/data$i");
    my $firstline = <$in>;
    chomp $firstline;
    while(my $line = <$in>){
        chomp $line;
        my ($well_position,$sample,$barcode,$block_id) = split(/\t/, $
+line);
        my $name = substr($block_id, 11);
        $sample =~ /(\d+)(.*)|(\D\d))/;
        print $out "$well_position\t$1\t$2\t$barcode\t$name\n";
    }
    $i++;
    close($in);
    close($out);
}
closedir($dh);

[download]
Thanks!
LomSpace

In reply to Re^2: processing a lot of files by lomSpace
in thread processing a lot of files by lomSpace

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