Before you dive in, keep in mind that the CLI is limited in functionality and not meant to replace the GUI in any remote way. It only works with volumes that don't use any keyfiles or advanced features, and you will still need the GUI to do anything more than basic file encryption. You should only use the CLI when you are not able to run the GUI or need an automatable interface for encrypting and decrypting files.
If you don't have Go installed, download it from <ahref="https://go.dev/dl/">here</a> or install it from your package manager. Then, run the command below: