use cli without opening it

Can I use RawTherapee_5.9 directly from the cli without opening it?

Hi and welcome to pixls!

RawTherapee comes with rawtherapee-cli, whicj is the command line version.

Have a look here: RawTherapee Command-Line options

BTW: If you use the AppImage you are out of luck, it does not have access to rawtherapee-cli