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What is the best way to compare TXT lists? I'm going to separate wild and tame in two different files, merge+sort with my own files and use uniq -d to find duplicates.
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I uploaded tames and wilds in different files. However I see you have already made a bash script to separate them

To compare txt files for unique records you can also can use sets by python: set(A)&set(B) --> set of unique records, where A and B are lists from different txt files.