Install Postgres 9.1, PostGIS 2.0 and PG Routing on Ubuntu

#!/bin/bash
#
# Install Postgres 9.1, PostGIS 2.0 and pgRouting on a clean Ubuntu 12.04 install
# updated to PostGIS 2.0.1

# add the ubuntu gis ppa
sudo apt-get -y install python-software-properties
sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
sudo apt-get update

# the big list of apt dependencies to check we have installed
sudo apt-get -y install postgis postgresql-9.1 postgresql-server-dev-9.1 postgresql-contrib-9.1 postgis  gdal-bin binutils libgeos-3.2.2 libgeos-c1 libgeos-dev libgdal1-dev libxml2 libxml2-dev libxml2-dev checkinstall proj libpq-dev

# install the json-c library
sudo apt-get install libjson0 libjson0-dev

# need to install most recent GEOS version for topology support
wget http://download.osgeo.org/geos/geos-3.3.8.tar.bz2
tar -jxvf geos-3.3.8.tar.bz2
cd geos-3.3.8
sudo ./configure && sudo make

#
sudo mkdir -p '/usr/share/postgresql/9.1/contrib/postgis-2.0.2'

# fetch, compile and install PostGIS
wget http://postgis.refractions.net/download/postgis-2.0.2.tar.gz
tar zxvf postgis-2.0.2.tar.gz && cd postgis-2.0.2
./configure --with-raster --with-topology
make
make install

## pgrouting - Add pgRouting launchpad repository
sudo add-apt-repository ppa:georepublic/pgrouting
sudo apt-get update

# Install pgRouting packages
sudo apt-get install gaul-devel \
        postgresql-9.1-pgrouting \
        postgresql-9.1-pgrouting-dd \
        postgresql-9.1-pgrouting-tsp

# Install osm2pgrouting package
sudo apt-get install osm2pgrouting

# Install workshop material (optional)
sudo apt-get install pgrouting-workshop

# create a table called 'routing'
sudo su postgres
createdb routing

# add PostGIS functions (version 2.x) to 'routing'
psql -d routing -c "CREATE EXTENSION postgis;"

# add pgRouting core functions to 'routing'
psql -d routing -f /usr/share/postlbs/routing_core.sql
psql -d routing -f /usr/share/postlbs/routing_core_wrappers.sql
psql -d routing -f /usr/share/postlbs/routing_topology.sql