I have 2 large files each containing long strings separated by newlines in different formats. I need to find similarities and differences between them. The Problem is that the formats of the two files differ. File a: File b: So now I want to extract the whole line containing NjA5MDAxNdaeag0NjE5NTIx.XUwXRQ.gat8MzuGfkj2pWs7z8z-LBFXQaE from File a to a new file and also delete