# udev rules for custom USB device
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="1234", ATTRS{idProduct}=="5678", GROUP="plugdev", MODE="0666"

# Rule for disk device
SUBSYSTEM=="block", KERNEL=="sd[a-z]", ATTRS{vendor}=="SanDisk", SYMLINK+="sandisk_drive"

# Run a script when a specific device is connected
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="abcd", ATTRS{idProduct}=="ef01", RUN+="/usr/local/bin/device_script.sh"