My personal bash prompt, including current time and kubernetes context/namespace

bash-prompt.sh

kube_prompt() {
    echo -n '\[\e[91m\]'$(kubectl config current-context)'\[\e[39m\]'
    K8S_NS=$(kubectl config view --minify --output 'jsonpath={..namespace}')
    if [[ ! -z $K8S_NS ]]; then
        echo "|\[\e[0;32m\]$K8S_NS\[\e[39m\]"
    fi
}

date_prompt() {
    echo -e "$(date +%H:%M:%S).$(date +%N | cut -b1-2)"
}

PROMPT_COMMAND=__prompt_command
__prompt_command() {
    local EXIT="$?"
    PS1='${debian_chroot:+($debian_chroot)}:\[\033[01;34m\]\w\[\033[00m\]\$ '

    if [ $EXIT != 0 ]; then
        PS1="[\[\e[0;31m\]${EXIT}\[\e[0m\]]${PS1}"
    else
        PS1="[\[\e[0;32m\]${EXIT}\[\e[0m\]]${PS1}"
    fi

    if env | grep -q 'ENABLE_KUBE_PROMPT'; then
        PS1="[$(kube_prompt)]$PS1"
    fi

    PS1="[\[\e[90m\]$(date_prompt)\[\e[39m\]]$PS1"
}

export ENABLE_KUBE_PROMPT=1