How do you “source” a file in fish?

Question

I'd like to use keychain with the fish shell, but I'm not sure how to get fish to load the ~/.keychain/hostname-fish file to set the appropriate environment variables.

In bash, there's the "source" command, but it doesn't exist in fish.

Answer 1

Below is what I have in ~/.config/fish/config.fish for your specific example.

set -gx HOSTNAME (hostname)
if status --is-interactive;
    keychain --nogui --clear ~/.ssh/id_rsa
    [ -e $HOME/.keychain/$HOSTNAME-fish ]; and . $HOME/.keychain/$HOSTNAME-fish
end

The source command is ., which also works in bash.