How to synchronize changes in a file?

Question

linux

There are two big files, on one side it is constantly changing.
How can I sync only changes in a file?

Answer 1

rsync

Answer 2

if you're talking about tools, then
rsync is a manual file updater for local and remote systems.
resilio sync - a daemon that looks after the specified directory and synchronizes the changes with other clients in the p2p cloud using a torrent-like protocol (the same guys stamp utorrent). commerce, there is a limited free version.
syncthing - created as a free open source analogue of recilio.

Answer 3

In addition to all of the above, you can use lsyncd. Essentially does the same thing as resilio sync, but more lightweight for my taste.