In another thread it was suggested that I use: > rsync -avzh --delete
-n <fromdirectory> <todirectory>
I tried it and got ~200 error messages of form:
> file has vanished: "/proc/10/exe"
> file has vanished: "/proc/10/task/10/exe"
> file has vanished: "/proc/101/exe"
> file has vanished: "/proc/101/task/101/exe"
> file has vanished: "/proc/10146/exe"
> file has vanished: "/proc/10146/task/10146/exe"
> file has vanished: "/proc/10300/cwd"
> file has vanished: "/proc/10300/root"
> file has vanished: "/proc/10300/exe"
Spot checking properties of those showed that although they had multiple
sub-directories the content was "0 bytes".
Browsing [https://manpages.debian.org/stretch/manpages/proc.5.en.html]
implied that excluding everything under /proc would be reasonable.
Am I correct?
TIA