If I have two list files A and B which has a number of lines. I want C to have all that in B that is not in A. And how shall I store the result? In an array? 

A: 1,3,4
   2,3
   2.4/2

B: 1,3,4
   2.4/2
   5,6

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Then C should contain 


C: 5,6

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In reply to Difference of two list files. by subr01

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