METHOD 1 needs, only, a lexical sort and an appropriate regex In order to get the lines of these remaining 3 cases A), B) OR C), TWO methods are possible : D) All the lines which are unique AND the last duplicate line, from all the duplicate linesįor this last case D), refer to that other post, below :. ![]() Indeed, sophey hence, you’re raising a general problem ! How, from the contents of the current file, to keep, ONLY :Ĭ) The first duplicate line, from all the duplicate lines
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