Re: differences

Is diff in Unix the same as diff was in MS-DOS? If so, the problem it tackles is fundamentally different from
finding the differences between two sets.

diff looks for differences between two sequences of lines of text. The presence of a line in B that is "between" two lines of B that are both in A, is displayed in the output. The concept of "between" doesn't exist in unordered sets. Once you add order to a set, you are talking about a different animal.

So which is it? The set difference or the sequence difference?

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Regards,
    David Cressey
    www.dcressey.com