My computer running Ubuntu 16.04 has a GPS receiver connected to a USB port.
gpsmon shows that the GPS receiver is locked and running.
sudo gpsmon /dev/ttyUSB0 works great!
BTW, why do I have to use sudo to run gpsmon every time?
Is there a way to set the system clock on Ubuntu 16.04 to the time being reported by the GPS receiver without using NTP?