Parse usage/specific.

def _usage_specific(raw):
    '''
    Parse usage/specific.
    '''
    get_key = lambda val: dict([tuple(val.split(":")), ])
    raw = raw.split("\n")
    section, size, used = raw[0].split(" ")
    section = section.replace(",", "_").replace(":", "").lower()

    data = {}
    data[section] = {}

    for val in [size, used]:
        data[section].update(get_key(val.replace(",", "")))

    for devices in raw[1:]:
        data[section].update(get_key(re.sub(r"\s+", ":", devices.strip())))

    return data