Hello flieckster,

You need to loop; for example:

use strict;
use warnings;
use POSIX qw( strftime );

my $dir  = $ARGV[0] // '.';
my $wait = $ARGV[1] //  10;

chdir $dir or die "$!";
my $count = () = glob '*';
print_dir_status($count);

if ($count > 0)
{
    my $equal = 0;

    until ($equal)
    {
        sleep $wait;
        my $new_count = () = glob '*';
        $equal = 1 if $new_count == $count;
        $count = $new_count;
        print_dir_status($count);
    }
}

sub print_dir_status
{
    my ($count) = @_;
    my  $time   = strftime "%a %d %b %Y %I:%M:%S %p", localtime;
    print "$time: there are $count files\n";
}
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Update: Note that (contrary to the node title) it’s not necessary to store the results of the glob in an array. The syntax $count = () = glob '*'; evaluates glob in list context (via the assignment to empty parentheses), then implicitly puts that list into scalar context (by assigning to a scalar variable) to get the list count.

Hope that helps,