parsort - Sort (big files) in parallel
parsort options for sort
parsort uses GNU sort to sort in parallel. It works just like sort but faster on inputs with more than 1 M lines, if you have a multicore machine.
Hopefully these ideas will make it into GNU sort in the future.
parsort *.txt > sorted.txt
Sort stdin (standard input) numerically:
cat numbers | parsort -n > sorted.txt
parsort is faster on a file than on stdin (standard input), because different parts of a file can be read in parallel.
On a 48 core machine you should see a speedup of 3x over sort.
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parsort uses sort, bash, and parallel.