[Gllug] Command-line tools for comparing lists

[Tom Schutzer-Weissmann]

Another question, and no silly M$ess to crow over either, soz

I'm looking for command-line tools for comparing lists. For example, to
find all the lines in a file that also appear in another file, or don't
appear in another file. Are there some well-established ones, or do
people just use a bit of Perl / Python / their own poison?

cheers,
Tom SW

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