gpsfake 1 12 Feb 2005 gpsfake test harness for gpsd, simulating a GPS gpsfake -h -c interval -l -n -o options -s speed logfile gpsfake is a test harness for gpsd and its clients. It opens a pty (pseudo-TTY), launches a gpsd instance that thinks the slave side of the pty is its GPS device, and repeatedly feeds the contents of a test logfile through the master side to the GPS. The logfile may be of either NMEA sentences or SiRF-II packets. Leading lines beginning with # will be treated as comments and ignored. The gpsd instance is run in background, but with logging to standard error attached so you will see the messages. The -c option sets the delay between sentences in seconds. Fractional values of seconds are legal. The -l option makes the program dump a line or packet number just before each sentence is fed to the daemon. If the sentence is textual (e.g., NMEA, the text is dumped as well). The -n option suppresses launch of the daemon. Instead, gpsfake will tell you the name of the slave pty so you can launch in instance that reads it. The -o option specifies options to pass to the daemon. Passing "-n -D 4" is often useful. The -s option sets the baud rate for the slave tty. The default is 4800. The -h option makes gpsfake print a usage message and exit. The argument must be the name of a file containing the data to be cycled at the device. gpsfake will print a notification each time it cycles. gpsd8, xgps1, libgps3, libgpsd3, gpsprof1, gnuplot1. Eric S. Raymond esr@thyrsus.com. There is a project page for gpsd here.