To install the evcli command, do:

go install github.com/veraison/evcli/v2@latest

To configure auto-completion, use the completion subcommand. For example, if bash is your shell, you would do something like:

evcli completion bash > ~/.bash_completion.d/evcli
. ~/.bash_completion

If instead you are using zsh managed via ohmyzsh:

evcli completion zsh > ~/.oh-my-zsh/completions/_evcli
. ~/.zshrc

For more help on completion:

evcli completion --help

For working with PSA attestation tokens follow the instructions given here

For working with CCA attestation tokens follow the instructions given here