Is os.mknod()Mac 上的特权调用？总是失败，不允许操作？
In [1]: import os
In [2]: os.mknod("/tmp/test123")
---------------------------------------------------------------------------
OSError Traceback (most recent call last)
<ipython-input-2-1b8032a076af> in <module>()
----> 1 os.mknod("/tmp/test123")
OSError: [Errno 1] Operation not permitted
来自 OSX 联机帮助页https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man2/mknod.2.html https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man2/mknod.2.html
Mknod() requires super-user privileges.
除无效参数外均有效
sudo python -c "import os; os.mknod('/tmp/test123')"
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