diff --git a/update.sh b/update.sh
new file mode 100644
index 00000000..70ebfcea
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+echo -e "\nupdate script for CubeSatSim\n"
+
+if [ "$1" = "u" ]; then
+
+  sudo apt-get update && sudo apt-get dist-upgrade -y
+
+  sudo apt-get install -y wiringpi git libasound2-dev i2c-tools cpulimit
+
+fi
+
+cd /home/pi/CubeSatSim
+
+git pull > .updated
+
+make debug
+
+FLAG=0
+
+if [[ $(diff systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service) ]]; then
+  echo "changed cubesatsim.service"
+  sudo cp /home/pi/CubeSatSim/systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service
+  FLAG=1
+else
+  echo "no changes to cubesatsim.service"
+fi
+
+if [[ $(diff systemd/rpitx.service /etc/systemd/system/rpitx.service) ]]; then
+  echo "changed rpitx.service"
+  sudo cp /home/pi/CubeSatSim/systemd/rpitx.service /etc/systemd/system/rpitx.service
+  FLAG=1
+else
+  echo "no changes to rpitx.service"
+fi
+
+FILE=/home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
+if [ ! -f "$FILE" ]; then
+    echo "Copying SSTV image 1"
+    cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
+fi
+    
+FILE=/home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
+if [ ! -f "$FILE" ]; then
+    echo "Copying SSTV image 2"
+    cp /home/pi/CubeSatSim/sstv/sstv_image_2_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
+fi
+      
+grep 'update' /home/pi/CubeSatSim/.updated
+if [[ $(grep 'update' /home/pi/CubeSatSim/.updated) ]]; then
+  echo "update script updated"
+  /home/pi/CubeSatSim/update
+fi
+
+if [ $FLAG -eq 1 ]; then
+  echo "systemctl daemon-reload and restart"
+  sudo systemctl daemon-reload 
+  sudo systemctl restart cubesatsim
+else
+  grep 'changed' /home/pi/CubeSatSim/.updated
+  if [[ $(grep 'changed' /home/pi/CubeSatSim/.updated) ]]; then
+    echo "systemctl restart cubesatsim"
+    sudo systemctl restart cubesatsim
+  else
+    echo "nothing to do"
+  fi  
+fi