How to work with com port in Linux?

Question

linux

Before working with the serial port, for example:

cat /dev/ttyUSB0
echo "1" > /dev/ttyUSB0

I have to do this:
sudo chmod 666 /dev/ttyUSB0
What kind of rights do I give to the COM port and how can I make it so that I don't have to do it every time?

Answer 1

Add the user under which the command is run to the dialout group
For chmod see here