FileBot makes scripting and automation as easy as it gets. Just script everything in Groovy instead of bothering with cumbersome cmd and bash scripts. It's the same on all platforms and much more powerful. The provided functions are the same as in the CLI and parameter usage is also exactly the same.
If you want to run scripts from a local file or if you want to make your own modifications just clone the repository into your local filesystem:
git clone https://github.com/filebot/scripts.git
Update to the latest revision:
git pull
Discard local changes:
git reset --hard
You may call local Groovy scripts by specifiying the file path:
filebot -script /path/to/script.groovy