How to skip existing and/or same size files when using robocopy

Question

I have this code:

@echo on
set source=\"R:\\Contracts\\\"
set destination=\"R:\\Contracts\\Sites\"

::Not sure if this is needed
::It guarantees you have a c         


        

Answer 1

Do you want to exclude files of the same size, or files that haven't changed? If it's the latter, use the /XO switch in RoboCopy to exclude files that are older than those they're being copied over.

RoboCopy "%%F" %destination% *.srt *.pdf *.mp4 *.jpg /COPYALL /XO /R:0

Answer 2

Are you wanting to mirror source and destination?
ROBOCOPY /MIR

It might be worth looking at the /FFT switch as well

You could of course use RAID 1, but I prefer having the discrete drives for flexibility.

Having said that, I've found robocopy regularly re-copies files that don't need to be copied. Perhaps a service is tweaking the dates in the source so they appear later.

I would like to know how to skip files of the same size and ignore dates since I know the files haven't changed if the sizes are identical for my media files.