Writing a UDev rule
Writing a simple UDev rule for identifying a device with a specific name

About UDev:

udev - Debian Wiki

To check your device connection, run:

dmesg | grep ttyUSB #or ttyACM as per your device type

Getting the attributes of the connected device:

udevadm info --name=/dev/ttyUSBx --attribute-walk # eg. /dev/ttyACM1

Writing the udev:

The following folder is reserved for non-system defined or custom udev rules
/etc/udev/rules.d
Create the following file:
sudo vim /etc/udev/rules.d/my_udev.rules
Add a similar line as per the set of unique identification attributes like serial no. or kernel no. available from Step-2 above:
SUBSYSTEM=="tty", ATTRS{idVendor}=="1234", ATTRS{idProduct}=="5678", SYMLINK+="your_device_name"
restart the system:
sudo service udev reload
Also reboot your system.

Verify:

Check if the rule really worked:
ls -l /dev/your_device_name
For more info visit:
Writing udev rules
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About UDev:
To check your device connection, run:
Getting the attributes of the connected device:
Writing the udev:
Verify: