You probably want something like this 

#!/usr/bin/perl
use strict;

my @emptyfiles = grep { /^\d+$/ } grep { -f } glob '*';
foreach my $emptyfile (@emptyfiles) {
  my $previous = $emptyfile - 1;

  if ((-z $emptyfile) and (-f $previous)) {
    print "found previous conformation: $previous \n";
    print "found new conformation: $emptyfile \n";
  } # if -z loop.

} #foreach loop.

[download]

Have a look at scalars and arrays in Perl variable types.

poj

In reply to Re^2: create array of empty files and then match filenames by poj
in thread create array of empty files and then match filenames by angela2

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