Custom fish shell config (~/.config/fish/config.fish)

config.fish

function fish_prompt --description 'Write out the prompt'
        # Just calculate this once, to save a few cycles when displaying the prompt
        if not set -q __fish_prompt_hostname
                set -g __fish_prompt_hostname (hostname|cut -d . -f 1)
        end

        set -l color_cwd
        set -l suffix
        switch $USER
        case root toor
                if set -q fish_color_cwd_root
                        set color_cwd $fish_color_cwd_root
                else
                        set color_cwd $fish_color_cwd
                end
                set suffix '>'
        case '*'
                set color_cwd $fish_color_cwd
                set suffix '$'
        end

        echo -n -s '['(date "+%H:%M:%S")'] ' (set_color red)"$USER" @ "$__fish_prompt_hostname" ' ' (set_color $color_cwd) (prompt_pwd) (set_color normal) "$suffix "
end