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Learning a solution to a problem is also learning. It's not that important, I may or may not do it on my own. Thanks for redirecting me away from here.

It's not homework, it's me trying to learn.

here is an excerpt of the file


38 51 17 28 39 33
23 56 43 45 15 07
08 13 59 17 34 35
41 54 59 33 05 13
28 19 29 47 04 05
44 12 43 24 45 07

I'd like to determine the frequency that each number occurs within a text file. I know how to do this for a single number, but not for a set or list of numbers. Here's what I have grep -o 01...