diff --git a/update.sh b/update.sh
new file mode 100755
index 00000000..113feebc
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,43 @@
+#!/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 [[ $(grep 'cubesatsim.service' /home/pi/CubeSatSim/.updated) ]]; then
+  echo "copying cubesatsim.service"
+  sudo cp systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service
+  FLAG=1
+else
+  echo "no changes to cubesatsim.service"
+fi
+
+if [[ $(grep 'rpitx.service' /home/pi/CubeSatSim/.updated) ]]; then
+  echo "copying rpitx.service"
+  sudo cp systemd/rpitx.service /etc/systemd/system/rpitx.service
+  FLAG=1
+else
+  echo "no changes to rpitx.service"
+fi
+
+if [ $FLAG -eq 1 ]; then
+  echo "systemctl daemon-reload"
+  sudo systemctl daemon-reload 
+else
+  echo "systemctl restart cubesatsim"
+  sudo systemctl restart cubesatsim
+fi