pg_gw_utils.py 文件源码

def interface_exists(interface):
    '''
    Checks if interface exists on node.
    '''
    try:
        subprocess.check_call(['ip', 'link', 'show', interface],
                              stdout=open(os.devnull, 'w'),
                              stderr=subprocess.STDOUT)
    except subprocess.CalledProcessError:
        return False
    return True