On Thu, 15 Aug 2013 17:24:43 +0300, Itschak Mugzach wrote:

>Or sort with omit duplicates...
> 
Ummm ...  Suppose File 1 is:

    A
    B

And File 2 is:

    B
    A

Merged and sorted is:

    A
    A
    B
    B

Eliminating duplicates gives:

    (nothing!)

-- gil

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