Which command creates mysterious.patch from the differences between old_file.txt and new_file.txt?
mysterious.patch
old_file.txt
new_file.txt
diff -uN old_file.txt new_file.txt < mysterious.patch
diff -uN old_file.txt new_file.txt > mysterious.patch
diff -uN new_file.txt old_file.txt > mysterious.patch
patch -p0 old_file.txt new_file.txt > mysterious.patch