Arduino script to gain permission at ttyUSB* ports. Needed just the first time.
It solves the avrdude: stk500_recv(): programmer is not responding & avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00 errors.
The script works with the port /dev/ttyUSB0, if you need to use it for any other port, just replace it.
# Change USB* with any device you want to gain permission
echo "Listing all the /dev/ttyUSB* ports"
echo "(Make sure to edit the .sh if you want to list other ports, like /dev/ttyACM*)"
echo ""
ls -l /dev/ttyUSB*
echo ""
# You'll get something like this:
# crw-rw-rw- 1 root dialout 188, 0 mar 11 17:42 /dev/ttyUSB0
# Add the user to the group
sudo usermod -a -G dialout $USER
echo "$USER added to the group"
echo ""
# And chmod it (replace ttyUSB0 with the port you want to gain permission for)
sudo chmod a+rw /dev/ttyUSB0
echo "Port has now a+rw permission"
echo ""
echo "You need to logout and login in order for changes to take effect"