def apt_purge(packages, fatal=False):
    """Purge one or more packages."""
    cmd = ['apt-get', '--assume-yes', 'purge']
    if isinstance(packages, six.string_types):
        cmd.append(packages)
    else:
        cmd.extend(packages)
    log("Purging {}".format(packages))
    _run_apt_command(cmd, fatal)