Re^5: compare two text file line by line, how to optimise

So, taking the first line of file 2

chirac presidential migration

compare this with each line of file 1 in turn

chirac prime paris
chirac prime jacques
chirac prime president 
chirac paris france
chirac paris french

and calculate how many words match. Output the file 1 line if the count is greater than a minimum value. Repeat for each line in file 2.

For this example, the number of words matching is only 1 ("chirac") in each case so if the minimum is 2 then none of the above lines be would output. Is that the logic ?

poj

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