toggle your staging amazon ec2 instance when you run the script

manage-staging.sh

#!/bin/bash
# make sure to have amazon ec2 command line tools installed
# this script assumes have an elastic ip, and the instance id is static

# enter your settings here
STAGING="instance-id"
STAGING_IP="your elastic ip"

# get the status if your instance
STATUS=`ec2-describe-instances $STAGING | awk 'FNR == 2 {print $6}'`
echo 'STATUS =' $STATUS

# start or stop depending on the status returned
if [ $STATUS == "running" ]; then
  echo "instance is currently running"
  echo -n "Enter stop or exit > "
  read text
  if [ $text == "stop" ]; then
    echo "stopping instance $STAGING"
    ec2-stop-instances $STAGING
  else
    exit
  fi
else
  if [ $STATUS == "stopping" ]; then
    echo "instance is stopping. exiting script"
    exit
  fi
  if [ $STATUS == "0" ]; then
    # status moved to column 4. column 6 is 0
    echo "starting instance $STAGING"
    ec2-start-instances $STAGING
    echo "assigning ip $STAGING_IP"
    sleep 15
    ec2-associate-address -i $STAGING $STAGING_IP
    
    echo "instance is already running"
  fi
fi