'Implements the boot once feature for the yaboot bootloader'

def boot_once_yaboot(self, entry_title):

    nvsetenv_cmd = find_executable('nvsetenv')
    if (nvsetenv_cmd is None):
        self.log.error('Could    not    find    nvsetenv    in    PATH')
        return (-1)
    return self._run_get_return([nvsetenv_cmd, 'boot-once', entry_title])
