Is a tool available to check the integrity of copied files?

[Ralf Mardorf]

On Sun, 2023-04-16 at 10:23 +0100, Colin Law wrote:
> Even if that works to disable the system cache, I still think it is
> not safe to use it on a USB stick.  Sticks have an onboard cache

Hi,

I agree. It's also true for any other storage device. SSD,HDD etc. cache
data, too. If I want to check data that was copied from one to another
internal drive, I wonder if unmounting and mounting the drive does reset
the drive's cache. However, for an important integrity check of backups
on external HDD I consider to shutdown and power on the computer, as
long as I have no further information, which I will read sooner or
later.

Regards,
Ralf