I have an application which will produce a large amount of data which I do not wish to store onto the disk. The application mostly outputs data which I do not wish to use, but a set of useful information that must be split into separate files. For example, given the following output:
JUNK JUNK JUNK JUNK A 1 JUNK B 5 C 1 JUNK
I could run the application three times like so:
./app | grep A > A.out ./app | grep B > B.out ./app | grep C > C.out
This would get me what I want, but it would take too long. I also don't want to dump all the outputs to a single file and parse through that.
Is there any way to combine the three operations shown above in such a way that I only need to run the application once and still get three separate output files?