How to sort a file of size 2N bytes, if I have N bytes of memory?
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Answer / naggy
In sorting huge files, the most useful options for GNU sort
are "-S size" and "-T tmp_dir". The first option specify the
largest memory sort should use. Sort is more efficient with
larger memory. The second option indicates the temporary
directory used by sort. It is helpful if there is not enough
disk space in the "/tmp" partition.
-S, --buffer-size=SIZE
use SIZE for main memory buffer
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