Update sdr.sh

groundstation/sdr.sh

@@ -3,6 +3,9 @@
 
 echo -e "\nScript to run SDR for CubeSat Simulator\n"
 
+# kill openwebrx if running
+ps -ef | grep rtl | grep -v grep | awk '{print $2}' | sudo xargs kill
+
 echo -e "Connect to CubeSatSim WiFi and open browser to http://192.168.8.245:8073\n"
 
 cd ../openwebrx