I want to be able to find and replace lines in a large .txt file with other values and output it to a new file, but I would then like it to find other lines and output those as changes to the new file, while leaving the previous changes in the new file, and not overwriting them.
For clarity, say I have:
Code: Select all
4
4
5
5
9
9
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4
4
500
500
900
900
If anybody has any suggestions that would be fantastic.