And your whole program can be as short as this:
use Modern::Perl;

my $sum_of_used;

@ARGV = <C:/Users/user/Desktop/DOwork/filez/nabillingscript/09_14_2012
+/nas/*>;
{
    no warnings qw/numeric uninitialized/;
    $sum_of_used += (split /\s+/)[2] while <ARGV>;
}
say $sum_of_used;

[download]
It uses the magic attached to the ARGV filehandle which automatically iterates over all lines of all filenames in @ARGV.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

My blog: Imperial Deltronics

In reply to Re^3: sumof - attempting to sum a column from each file by CountZero
in thread sumof - attempting to sum a column from each file by ricky5ive

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