```
i=1;
while [ $i -le $THREAD ]
do

N=`printf "%02d" "${i}"`
SCREEN_NAME=${ZONE}-${N}
LOG="${LOGDIR}/${ZONE}_${N}.log"
touch $LOG

i=`expr $i + 1`
if [ -n "`screen -ls | grep ${SCREEN_NAME}`" ]; then
  echo "already have session_name. ${SCREEN_NAME}"
  continue 2
fi 
screen -R ${SCREEN_NAME}
sleep 1
screen -d ${SCREEN_NAME}

screen -S ${SCREEN_NAME} -X logfile "${LOG}"
sleep 1

screen -S ${SCREEN_NAME} -X log on
sleep 1

if [ "$ZONE" == "main" ];then
  i=`expr $THREAD + 1`
else
  screen -S ${SCREEN_NAME} -X stuff "ssh root@${ZONES[${ZONE}]}
  "
  sleep 1

  screen -S ${SCREEN_NAME} -X stuff "cd /onapp/interface ; rails c
  "
  sleep 1
fi

```