Would process substitution be more efficient, especially if you don't need to save the files
OutputB, and care only about
Result? Would this be particularly time-saving because if you have a slow I/O in writing to disk, saving the files
OutputB might be the rate-limiting step?
combine <(somethingElse InputA) <(somethingElse InputB) > Result
Process substitution allows you to put the command inside
<(..here..) instead of saving the output into a file, and then reading from it as input in the "combine" step.
If memory is a limitation, and the size of
outputB more than what the memory can hold, will it defeat the whole purpose?
combine wait till both processes are completed before it starts running?