Yea, I'm a big fan of this method. Memory-gentle, constant time, easy to understand. We use it a lot at work for files with tens of millions of lines. Note that it assumes sorted input files, but that's what sort(1) is for. :-)

In reply to Re^2: combining 2 files with a comon field by merzy
in thread combining 2 files with a comon field by jjohhn

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