Re: splitting a file

I don't see why not. Following is one possible way. This should break up your 8 GB file into 512 MB files 1 MB at a time. It's untested as I don't have an 8 GB file handy, but should give you the idea.

my $filename = 'foo';
my $bufferSize = 1,000,000;
my $outFileSize = 512;

open (IN, $filename);
binmode IN;
seek (IN, 0, 0);

my $buffer;
my $i = 1;
my $j = 1;
open (OUT, "$filename$i");

while (read (IN, $buffer, $bufferSize)){

    if ($j > $outFileSize){

        $j = 1;
        $i++;
        close OUT;
        open (OUT, "$filename$i");

    }

    print OUT $buffer;
    $j++;

}

close OUT;
[download]

UPDATE: No I don't manufacture hard drives, so as Fletch correctly points out, $bufferSize should be 1048567 bytes. Oh, and leave out the commas.

Comment on Re: splitting a file Download Code

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Re^2: splitting a file by Fletch (Bishop) on Jul 05, 2007 at 12:47 UTC
`$ perl -le '$oh_really = 1,000,000; print "$oh_really?"' 1?` [download] What you actually meant was `1_000_000`, but if you really wanted 1MB that's `1_048_576` (or `1024 * 1024`). Unless of course you're a hard drive manufacturer . . .</pedant>	[reply] [d/l] [select]