The RunScript component allows you to run OS standard scripts.
If Gravio Server is running on Windows it can run batch files, Linux, Raspbian and macOS can run shell scripts.
If it is not Windows, you need to give execute rights to the uploaded file. The uploaded file is placed in <Gravio data folder>/action/scripts/, so
On Windows: C:\ProgramData\Gravio\action\scripts
On Mac OS: /Library/Application Support/Gravio/action/scripts
On Linux: /var/opt/gravio/action/scripts/
You can also pass parameters to the scripts, for example, to pass sensor values.