If count == 30, you know that particular address was found in all 30 files...
Almost. If count == 30, you know that the MAC showed up 30 times in the combined input. Could've been 30 times in the first file. If, however the OP knows that the MACs are unique within a given file (i.e. each MAC in a file appears only once), then the statement that "count == 30 implies it was found in all 30 files" is true.

thor

In reply to Re^2: Comparing files by thor
in thread Comparing files by dannyp

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