A batch file suitable for invoking a cygwin shell script which carries out a backup on Windows using unix-tooling.

remote-backup.cmd

rem This batch file is executed by vscsc.exe after the shadow copy has been
rem created. It is used to initate the backup.
rem
rem %1 is the volume ID of the backup, we pass it to the bash script which
rem runs rsync for us.

c:\cygwin64\bin\bash.exe --login -i ./do-remote-backup.bsh "%1"