SPUG: Sorting a big file

Brian Hatch bri at ifokr.org
Fri Aug 27 15:51:40 CDT 2004

> I have a large file (~1 million lines, ~142MB) which I need to sort (any
> order is fine, just so the lines are in a repeatable order).
> Just using perl's 'sort' on the file read into an array eats up all the
> RAM and swap on my box and crashes.  I'm also trying tying the file as an
> array, but it looks like that is also going to use up all the memory. Does
> anyone know some other methods I could try?


split $FILE section.
for file in section.*
	sort $file > $file.sorted
sort -m section.*.sorted > sorted-version

rm section.*

Brian Hatch                  "Londo, do you know where you are?"
   Systems and               "Either in Medlab, or in Hell.
   Security Engineer          Either way, the decor needs work."

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