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文 | 数字力场，作者 | 佘宗明
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To listen to the events that the kernel normally sends to udev, we need to create a AF_NETLINK socket with protocol NETLINK_KOBJECT_UEVENT (protocol is not typically used and is 0 for TCP and UDP, but we do need to specify it here):
人民日报记者提问称，我国现行有效的生态环境法律已经有30多部，为什么还要制定一部专门的生态环境法典？