update-war-hostname.sh

#!/bin/bash

# safety
set -e

# variables
HOSTNAME=$1
WAR_PATH="/var/lib/tomcat6/webapps/ROOT.war"
WAR_FOLDER_PATH="/var/lib/tomcat6/webapps/ROOT"
TIMESTAMP=$(date +%Y-%m-%dT%H:%M:%SZ)
BACKUP_WAR_PATH="/usr/local/etc/aggregate/ROOT.war.$TIMESTAMP" 
ZIP_PATH=$(which zip)
UNZIP_PATH=$(which unzip)

# sanity check
if [ ! -f /etc/lsb-release ]
then
  echo "No /etc/lsb-release found. Make sure you run this inside the VM!";
  exit;
fi

# input check
if test $# -lt 1
then
  echo "Usage: ./update-war-hostname.sh hostname";
  exit;
fi

# url check
shopt -s nocasematch
if [[ $HOSTNAME =~ .*http.* ]]
then
  echo "Hostname should not include http:// or https://";
  exit
fi

# zip check
if [ -z "$ZIP_PATH" ]
then
  echo "zip was not found. Install zip, and make sure it is on your path.";
  exit;
fi

# unzip check
if [ -z "$UNZIP_PATH" ]
then
  echo "unzip was not found. Install unzip, and make sure it is on your path.";
  exit;
fi

# war check
if [ ! -f $WAR_PATH ]
then
  echo "Aggregate war $WAR_PATH was not found."
  exit;
fi

echo "Stopping Tomcat";
/etc/init.d/tomcat6 stop;
sleep 1;

echo "Cleaning up tmp folders";
cd /tmp;
if [ -d /tmp/ODKAggregate ]
then
  rm -rf /tmp/ODKAggregate;
fi
if [ -d /tmp/ODKAggregate-settings ]
then
  rm -rf /tmp/ODKAggregate-settings;
fi

echo "Unpacking ROOT.war";
$UNZIP_PATH -q $WAR_PATH -d /tmp/ODKAggregate;

echo "Unpacking ODKAggregate-settings.jar";
$UNZIP_PATH -q /tmp/ODKAggregate/WEB-INF/lib/ODKAggregate-settings.jar -d /tmp/ODKAggregate-settings;

echo "Changing ODKAggregate-settings.jar settings";
eval "sed -i -e 's/^security.server.hostname=.*/security.server.hostname=$HOSTNAME/g' /tmp/ODKAggregate-settings/security.properties;";

echo "Repacking ODKAggregate-settings.jar";
cd /tmp/ODKAggregate-settings;
$ZIP_PATH -q -r ../ODKAggregate/WEB-INF/lib/ODKAggregate-settings.jar .;

echo "Backing up old war and removing exploded folder";
if [ -f $WAR_PATH ]
then
  mv $WAR_PATH "$BACKUP_WAR_PATH";
fi
if [ -d $WAR_FOLDER_PATH ]
then
  rm -rf $WAR_FOLDER_PATH;
fi

echo "Repacking ROOT.war";
cd /tmp/ODKAggregate;
$ZIP_PATH -q -r $WAR_PATH .;

echo "Cleaning up tmp folders";
cd /tmp;
if [ -d /tmp/ODKAggregate ]
then
  rm -rf /tmp/ODKAggregate;
fi
if [ -d /tmp/ODKAggregate-settings ]
then
  rm -rf /tmp/ODKAggregate-settings;
fi

echo "Starting Tomcat";
/etc/init.d/tomcat6 start;

echo "----------------------------------------"
echo "New server hostname: $HOSTNAME";
echo "Old war location: $BACKUP_WAR_PATH";

what language will use to this?