I have two folders.
A is an older version of B, having been copied at some point.
There may be changes in A but that are not in B.

I wanna find out if there are any, and what they are if they exist.

How do i do that, preferably using Linux standard utils

@4censord you could check where the modified date of the file in A is newer than the same file in B, or that the file in A does not exist in B
then you could run diff on just those files