Sed error : bad option in substitution expression

Question

I have a configuration file (gpsd.default) containing data with the following format:

# If you must specify a non-NMEA driver, uncomment and mod         


        

Answer 1

You should update your sed command to this.

sed -i 's/^GPS_DEVICES=\"\".*/GPS_DEVICES=\"dev\/ttyUSB1\"/' /etc/default/gpsd.default