try this

!/bin/sh

cd "$(dirname "$0")" . ./settings.sh

makes things easier if script needs debugging

if [ x$FTB_VERBOSE = xyes ]; then set -x fi

cleaner code

eula_false() { grep -q 'eula=false' eula.txt return $? }

start_server() { "$JAVACMD" -server -Xms1024M -Xmx4096M -XX:PermSize=256M -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:+CMSClassUnloadingEnabled -XX:ParallelGCThreads=2 -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10 -jar FTBServer-1.7.10-1614.jar nogui }

run install script if MC server or launchwrapper s missing

if [ ! -f $JARFILE -o ! -f libraries/$LAUNCHWRAPPER ]; then echo "Missing required jars. Running install script!" sh ./FTBInstall.sh fi

check if there is eula.txt and if it has correct content

if [ -f eula.txt ] && eula_false ; then echo "Make sure to read eula.txt before playing!" echo "To exit press <enter>" read ignored exit fi

inform user if eula.txt not found

if [ ! -f eula.txt ]; then echo "Missing eula.txt. Startup will fail and eula.txt will be created" echo "Make sure to read eula.txt before playing!" echo "To continue press <enter>" read ignored fi

echo "Starting server" rm -f autostart.stamp start_server

while [ -e autostart.stamp ] ; do
    rm -f autostart.stamp
    echo "If you want to completely stop the server process now, 
press Ctrl+C before the time is up!"
    for i in 5 4 3 2 1; do
        echo "Restarting server in $i"
        sleep 1
    done
    echo "Rebooting now!"
    start_server
    echo "Server process finished"
done