Overwrite a command with it's development one.

devpath.sh

devpath()
{
    DEVPATH_DIR=$HOME/.local/share/devpath
    DEVPATH_RE='.*devpath/.'

    if [[ "$1" =~ ^-{0,2}h(elp)?$ ]] || [[ -z "$1" ]]; then
        echo "Usage: devpath scriptName" >&2
        echo "or   : devpath -l|--list" >&2
        return 0
    elif [[ "$1" =~ ^-{0,2}l(ist)?$ ]]; then

        IFS=":" read -ra path <<< "$PATH"

        for path_element in ${path[@]}; do
            [[ "$path_element" =~ $DEVPATH_RE ]] && ls $path_element
        done
    else

        script=$1
        scriptName=$(basename $script)
        scriptName=${scriptName//.${scriptName##*.}/}

        bin=$DEVPATH_DIR/$scriptName

        [ -d "$bin" ] || mkdir -p "$bin"
        [ ! -f $bin/$scriptName ] && ln -s `realpath "$script"` $bin/$scriptName || echo "Already linked :)" >&2
        [[ $PATH =~ $bin ]] || export PATH=$bin":"$PATH
        echo "Done." >&2
    fi
}