RoboCopy – Exclude existing files.cmd

robocopy.exe c:\Sourcepath c:\Destpath /E /XC /XN /XO

:: /E makes Robocopy recursively copy subdirectories, including empty ones.
:: /XC excludes existing files with the same timestamp, but different file sizes. Robocopy normally overwrites those.
:: /XN excludes existing files newer than the copy in the source directory. Robocopy normally overwrites those.
:: /XO excludes existing files older than the copy in the source directory. Robocopy normally overwrites those.
:: With the Changed, Older, and Newer classes excluded, Robocopy will exclude files existing in the destination directory.

 

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