fish: Unknown command:

• which, whereis, type (Bash built-in), type -a python3, which python3, command, hash
• fish_add_path
• Fish shell, fish_config, fish vi key bindings, set --export, Search as you type, Fisher, ~/.config/fish/config.fish, fish_add_path, fish_prompt, funcsave, ~/.config/fish/functions/, string trim, psub, history search