I have multiple files that are set up as:

name,number

I want to search all the files and print only the names that are present at least once in each of the files AND have at least 25 matches amongst the all files.

I am new to coding and not sure how to best go about this. Was thinking of making hash using the names as the keys but I'm not sure how to to be sure that the name is present all four files and has 25 matches amongst all of them

Any help would be greatly appreciated.

In reply to Extracting common keys present in multiple files by Anonymous Monk

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