Perl free example : How to count the sum in bytes of all the files contained in a folder? tutorial sample code

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How to count the sum in bytes of all the files contained in a folder?

(Perl free example written by Anton Zamov.)

How to count the sum in bytes of all the files contained in a folder?

my($totalBytes) = 0;
while(<STDIN>)
{
my($line) = $_;
chomp($line);
if($line !~ /<DIR>/) #directories don't count
{
#*** only lines with dates at position 28 ****
if ($line =~ /.{12}((d| |,){14}) dd-dd-dd/)
{
my($bytes) = $1;
$bytes =~ s/,//; #substitute nothing for comma -- delete commas
$totalBytes += $bytes;
}
}
}
print "$totalBytes bytes in directory.n";

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