This explains how you could run a script made by you (say /usr/local/my_script) when you plug a specific USB device.
1. First run lsusb to identify your device. Example:
bash# lsusb Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 040a:0576 Kodak Co. Bus 002 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000
2. After doing this you know that - the vendor ID of your device is 040a - the product ID of your device is 0576
3. Now is time to create your UDEV rule:
vim /etc/udev/rules.d/85-my_rule.rules
4. And add the text
ACTION=="add", SUBSYSTEM=="usb_device", SYSFS{idVendor}=="040a", SYSFS{idProduct}=="0576", RUN+="/usr/local/my_script"
When the usb_device product identified as 0576 of vendor 040a is added, run /usr/local/my_script Note that '==' and ”!=” are comparators, while = and += are assingments