switch-mongo

#!/bin/bash

if [ -z "$1" ]; then
  echo "You must specify which directory to use."
  echo "eg: ./switch-mongo mongodb-linux-x86_64-1.6.5-rc1"
  exit 1
fi

if [ ! -d "/opt/$1" ]; then
  echo "Directory /opt/$1 doesn't exist. Cannot continue."
  exit 1
fi

echo "This script will switch MongoDB over to '$1'."
echo "To approve, type 'yes'. Otherwise, press ENTER.."
read approval

if [ -z "$approval" ] || [ "$approval" != "yes" ]; then
  echo "See ya!"
  exit 1
else
  echo "Let's do it!"
fi

echo "Stopping MongoDB..."
/etc/init.d/mongod stop
sleep 3

echo "Removing previous symlink..."
rm /opt/mongodb
echo "Creating new symlink..."
ln -s /opt/$1 /opt/mongodb
echo "Starting MongoDB..."
/etc/init.d/mongod start

echo "Grepping PS AUX for MongoDB."
ps aux | grep mongod
echo "Done!"