I'm afraid I don't understand, by $previous_line always being the first line it affects all of the variables in the loop. The loop starts on line 2, with the previous line being line 1; in the next iteration I'd like it to be on line 3, with the previous line being line 2 (and so on).

In reply to Re^4: How to loop over two lines, alter a value in the current line and save it to the previous line? by rjc33
in thread How to loop over two lines, alter a value in the current line and save it to the previous line? by rjc33

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