say i wanted to update one of my maps, but it is rather large, and other people who have the old map want the new one, without redownloading the whole thing.
is there a program where i can compare the 2 files, and make a file which contains all the changes to the new map compared to the old one, and send that update to the ppl with the old map, and they use the same program to merge the update with the old so they have the updated map. (this is all theoretical - it could be any file, dont worry about file structures etc.)
basically i want to make a 'patch' for a file (a singular file).
is there a program that can do this?