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  • Hi, I've just tested and it seems to work however what i stupidly failed to mention is that there will be duplicate lines, any ideas please Commented Dec 23, 2015 at 11:47
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    @ChrisJ There are a lot of ideas, but you need to show sample input and expected output with duplicate lines. Commented Dec 23, 2015 at 11:51
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    @ChrisJ Definitely there is no 400 lines limit in awk. Commented Dec 23, 2015 at 12:10
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    @BumblingBadger See the edit. Commented Nov 14, 2020 at 10:09
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    @BumblingBadger The question was modified multiple times and honestly I do not understand what OP wanted to do. Other answers in this topic don't help solving this mystery either. Looking at it right now I think that the most sense is to match bart-computer, apu-computer, smithers-keyboard and lisa-keyboard, so I changed my second answer once again accordingly. So I just switched input files and left "duplicates'. If you have similar problem and just want to select first record add ,a[$2]="" before last }. Commented Nov 16, 2020 at 8:55