maheshkumar:

Any way you like. You could do something like:

my $output_filename="OUTPUT.001";

for my $filename (@filelist) {
    do_stuff($filename, $output_filename);
    ++$output;
}
[download]

But it would most likely be less confusing to just tack on a new suffix, or squirrel the file away in a different directory:

for my $filename (@filelist) {
    my $output_filename = $filename . ".processed";
    do_stuff($filename, $output_filename);
}
[download]

...roboticus

When your only tool is a hammer, all problems look like your thumb.