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Hi all,

I think the problem is maybe I did not state my question clearly. I've changed the statement and made it more easy to understand.

Thanks,

Lu

Thank you so much, Scrutinizer and RudiC! And yes RudiC, such lines are to be suppressed. I only want to get the information for all lines in file1, if the lines exits in file2, then add the other...

Hi there,

I have two very long files like:

file1: two fields


1 123
1 125
1 234
2 123
2 234
2 300
2 312
3 10
3 215
4 56
...