thank you for your advice!!

but the odd lines are not of the same length. maybe your solution would get a wrong result. but you give me a good advice!

I change the pack parameter from "N" to "L", maybe the "L" could be enough to store the line number, while the "N" is not long enough.

thank you!

In reply to Re^2: index for large text file by cafeblue
in thread index for large text file by cafeblue

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