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From FreeFileSync
Command Line Usage
FreeFileSync enables additional synchronization scenarios via a command line interface. To get a syntax overview, open the console, go to the directory where FreeFileSync is installed and type:
1. Run a FreeFileSync batch job
In order to start synchronization in batch mode, supply the path of a ffs_batch configuration file as the first argument for FreeFileSync.exe:
After synchronization one of the following status codes is returned:
0 - Synchronization completed successfully
1 - Synchronization completed with warnings
2 - Synchronization completed with errors
3 - Synchronization was aborted
You can evaluate these codes from a script (e.g. a cmd or bat file on Windows) and check if synchronization completed successfully:
if errorlevel 1 (
::if return code is 1 or greater, something went wrong, add special treatment here
echo Errors occurred during synchronization...
pause
)
Instead of displaying "An error occurred!" you can also send an email notification (using a third party tool).
Make sure your script is not blocked by a popup dialog. Consider the following options when setting up a FreeFileSync batch job:
- Disable checkbox Show progress dialog or have On completion automatically close the results dialog after synchronization.
- Set error handling to Stop or Ignore.
2. Start a FreeFileSync GUI configuration
If you pass a ffs_gui file, FreeFileSync will start in GUI mode and immediately start comparison (but only if all directories exist):
3. Customize an existing configuration
You can replace the directories of a given ffs_gui or ffs_batch configuration file by using the -leftdir and -rightdir parameters:
4. Merge multiple configurations
When more than one configuration file is provided, FreeFileSync will merge everything into a single configuration with multiple folder pairs and start in GUI mode: