Hacky way to keep config files in sync when there's a new version of some software.
Caveat : probably completely wrong, may not pick up config entries added in the new version, etc. But, works for me right here right now ;-)
So let's say we have two folders:
Same structures, different versions. 4.1.0 was set up with our local config in
./etc, that we want to preserve. We can use
diff to easily see what's changed:
diff -r confluent-4.1.0/etc confluent-4.1.0/etc
But this only tells us what changed. Nicer is to automagically apply it.
Let's run this from the folder in which we're going to apply the changes:
diff, and write the results to a file:
diff -ur . ../../confluent-4.1.0/etc > 4.1.1.patch
Now apply it:
patch -p0 < 4.1.1.patch
Of course, you took a backup first before you did that, just in case something broke… right?