小编let*_*try的帖子

我有 3 个 USB 转串口设备通过 USB 集线器连接到 PC。它们根据插入顺序分配设备路径（即 /dev/ttyUSB0 或 /dev/ttyUSB1 或 /dev/ttyUSB2 ）。我的应用程序将如果给定 USB 设备的设备路径保持静态，则使用起来会容易得多。

计划是编写 udev 规则，使用唯一的串行属性来标识设备，然后将其符号链接到静态名称下。该设备的属性是：

user->/dev:udevadm info -a -p $(udevadm info -q path -n /dev/ttyUSB1)\n\n  looking at device \'/devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1.2/3-1.2:1.0/ttyUSB1/tty/ttyUSB1\':\n    KERNEL=="ttyUSB1"\n    SUBSYSTEM=="tty"\n    DRIVER==""\n\n  looking at parent device \'/devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1.2/3-1.2:1.0/ttyUSB1\':\n    KERNELS=="ttyUSB1"\n    SUBSYSTEMS=="usb-serial"\n    DRIVERS=="ftdi_sio"\n    ATTRS{port_number}=="0"\n    ATTRS{latency_timer}=="1"\n...\n\n  looking at parent device \'/devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1.2\':\n    KERNELS=="3-1.2"\n    SUBSYSTEMS=="usb"\n    DRIVERS=="usb"\n    ATTRS{bDeviceSubClass}=="00"\n    ATTRS{bDeviceProtocol}=="00"\n    ATTRS{devpath}=="1.2"\n    ATTRS{idVendor}=="0403"\n    ATTRS{speed}=="12"\n    ATTRS{bNumInterfaces}==" 1"\n    ATTRS{bConfigurationValue}=="1"\n    ATTRS{bMaxPacketSize0}=="8"\n    ATTRS{busnum}=="3"\n    ATTRS{devnum}=="18"\n    ATTRS{configuration}==""\n    ATTRS{bMaxPower}=="90mA"\n    ATTRS{authorized}=="1"\n    ATTRS{bmAttributes}=="a0"\n    ATTRS{bNumConfigurations}=="1"\n    ATTRS{maxchild}=="0"\n    ATTRS{bcdDevice}=="0600"\n    ATTRS{avoid_reset_quirk}=="0"\n    ATTRS{quirks}=="0x0"\n    ATTRS{serial}=="AL01QGTY"  ===> This attribute …