linux系统离线环境下出现libffi.so.6缺失的解决办法

离线服务器运行项目出现了如下图所示的报错

Traceback (most recent call last):
  File "dga_predict.py", line 4, in <module>
    import tensorflow as tf
  File "/usr/local/python36/lib/python3.6/site-packages/tensorflow/__init__.py", line 28, in <module>
    from tensorflow.python import pywrap_tensorflow  # pylint: disable=unused-import
  File "/usr/local/python36/lib/python3.6/site-packages/tensorflow/python/__init__.py", line 27, in <module>
    import ctypes
  File "/usr/local/python36/lib/python3.6/ctypes/__init__.py", line 7, in <module>
    from _ctypes import Union, Structure, Array
ImportError: libffi.so.6: cannot open shared object file: No such file or directory

昨天浏览了好多解决办法，也亲自去实践过，结果都失败了。于是自己想出了一个办法，完美解决了这个问题

解决办法如下

1、去有网的服务器上查看对应的lib包

sudo find /usr/lib64/ -name 'libffi.so.6*'

结果是