self-update skript hinzugefügt. ToDo: Test, ob Internet verfügbar!

startup.sh

@@ -1,7 +1,49 @@
 #!/bin/bash -x
 
+
+SCRIPT=$(readlink -f "$0")
+SCRIPTPATH=$(dirname "$SCRIPT")
+SCRIPTNAME="$0"
+ARGS="$@"
+
+UPSTREAM=${1:-'@{u}'}
+LOCAL=$(git rev-parse @)              #Hash of the current local commit (@ is a git shorthand)
+REMOTE=$(git rev-parse "$UPSTREAM")   #Hash of the current upstream commit
+BASE=$(git merge-base @ "$UPSTREAM")  #Hash of the commit at which the current branch and its upstream diverge
+
+
+self_update() {
+    # Wait for Network
+    sleep 10
+
+    cd $SCRIPTPATH
+    git fetch
+
+    if [ $LOCAL = $REMOTE ]; then
+        echo "Repo is Up-to-date"
+
+    elif [ $LOCAL = $BASE ]; then
+        echo "Repo is not Up-to-date. Pulling!"
+        git pull --force
+
+        echo "Executeing the new version..."
+        exec "$SCRIPTNAME" "$@"
+
+        # Now exit this old instance
+        exit 0
+
+    else
+        echo "Diverged"
+    fi
+
+    echo "Already the latest version. Now running the script. "
+
+
+}
+
+main() {
    # wait for sonic-pi to start
-sleep 90
+    sleep 70
 
     # set the default audio output to be the headphone jack
     amixer cset numid=3 1
@@ -11,3 +53,9 @@ amixer sset PCM 100%
 
     # play our tune
     cat /home/pi/world-o-techno/world-o-techno.rb|sonic_pi
+}
+
+self_update
+main
+
+