You are probably using too old a version of File::Find. Pre- and postprocess callbacks are a somewhat recent addition that entered the fray around Perl 5.6 IIRC.

A somewhat cleaned up version of your script:

#!/usr/bin/perl -w
use strict;

use constant OLD => "CPB.old";
use constant NEW => "CPB";

use File::Find;

my $old_flag = 0;

find (
    {
        preprocess  => sub {
            print "Pre-Processing\n";
            $has_old = grep /\.old$/, @_;
            @_;
        }, 
        wanted      => sub {},
        postprocess => sub {
            print "Post-Processing\n";

            return unless $has_old;
            return unless rename NEW, OLD;

            open my $in, "<",  OLD
                or die "Unable to open input CPB: $!";

            open my $out, ">", NEW
                or die "Unable to open output CPB: $!";

            while (<$in>) {
                s!^cat\t!cat\t/kat/src/all/bld_pipe.4go \\\n\t!;
                print $out $_;
            }
        }
    }, 
    '/home/greg/mydir'
);

[download]

Makeshifts last the longest.

In reply to Re: File::Find problem by Aristotle
in thread File::Find problem by Anonymous Monk

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