Flush disk write cache from Windows CLI

Question

Does anyone know how to flush the disk write cache data from the cache manager for the current directory (or any given file or directory, for that matter), from a Windows command line?

Answer 1

Sysinternals Sync seems to do what you want.

Answer 2

Sync, see http://technet.microsoft.com/en-us/sysinternals/bb897438.aspx

Not ideal, but it works.