Colored return code in a Bash PS1

Description

Prefixes a return code to the prompt and colors it green if 0, otherwise red.

Who is it for?

Bash users.

In ~/.bashrc, create a function like this:

rcc() {
    if [[ $? -eq 0 ]]; then
        echo -e '\e[0;32m'$?'\e[0;0m'
    else
        echo -e '\e[0;31m'$?'\e[0;0m'
    fi
}

Then edit your $PS1 to call rcc(). Example:

PS1='[`rcc`|\u@\h \W]\$ '