There are three things you could try.:

1) The one that will always work is to split up the file in smaller chunks, sort the separately, and then merge them again.

2) If you work on a unixish system, you could try to abuse you system's sort program, at least GNU sort handles memory limitations automatically by creating temporary files.

3) Search on CPAN. Maybe there's a module that does what you want? File::Sort looks promising at a first glance (actually CPAN should be your first place to look ;-)

In reply to Re: Sorting a (very) large file by moritz
in thread Sorting a (very) large file by condar

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