world-o-techno/startup.sh

#!/bin/bash -x


SCRIPT=$(readlink -f "$0")
SCRIPTPATH=$(dirname "$SCRIPT")
SCRIPTNAME="$0"
ARGS="$@"




self_update() {
    # Wait for Network
    sleep 10

    cd $SCRIPTPATH
    git fetch
    
    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

    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 95

    # set the default audio output to be the headphone jack
    amixer cset numid=3 1

    # set audio volume to full
    amixer sset PCM 100%

    # play our tune
    cat /home/${USER}/world-o-techno/world-o-techno.rb|sonic_pi
}

self_update
main