Bash-Prompt mit Infos zu Git-Repository

Folgendes an geeigneter Stelle in die ~/.bashrc einbauen:

function my_prompt
{
        local BLACK="\[\033[0;30m\]"
        local BLACKBOLD="\[\033[1;30m\]"
        local RED="\[\033[0;31m\]"
        local REDBOLD="\[\033[1;31m\]"
        local GREEN="\[\033[0;32m\]"
        local GREENBOLD="\[\033[1;32m\]"
        local YELLOW="\[\033[0;33m\]"
        local YELLOWBOLD="\[\033[1;33m\]"
        local BLUE="\[\033[0;34m\]"
        local BLUEBOLD="\[\033[1;34m\]"
        local PURPLE="\[\033[0;35m\]"
        local PURPLEBOLD="\[\033[1;35m\]"
        local CYAN="\[\033[0;36m\]"
        local CYANBOLD="\[\033[1;36m\]"
        local WHITE="\[\033[0;37m\]"
        local WHITEBOLD="\[\033[1;37m\]"
 
        local CLEAR="\[\033[00m\]"
 
        if __gitdir > /dev/null; then
                if ! git diff --no-ext-diff --quiet --exit-code; then
                        # unstaged changes
                        git_branch="$REDBOLD"
                elif ! git diff --no-ext-diff --quiet --cached --exit-code; then
                        # staged changes
                        git_branch="$YELLOWBOLD"
                else
                        # no changes
                        git_branch="$GREENBOLD"
                fi
 
                git_branch=${git_branch}$(__git_ps1)"$CLEAR"
        else
                git_branch=""
        fi
 
        PS1="$BLUEBOLD[\W]$CLEAR${git_branch} \$ "
}
 
PROMPT_COMMAND=my_prompt