The first line consists of an "action", @, and a device path under sysfs (i.e. normally at /sys/devices/pci…). The rest of the lines contain key-value pairs that depend on the individual drivers and subsystems in the kernel. udev is then expected to match this information with rules it knows about in order to set up the new device.
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，这一点在新收录的资料中也有详细论述
self.conn.commit()
每天早起，开始写作。你每天做什么，你就成为什么。