How to install PostGIS 1.5 on Ubuntu 11.10 (oneiric) from packages

ComponentVersion
 PostGIS1.5.3
 PostgreSQL9.1
 PROJ4.7.0
 GEOS3.2.2

Install everything using:

sudo apt-get install postgresql-9.1-postgis

Accept and install the approx 47 packages.

Complete a post-install by creating a template, which can be re-used for creating multiple spatially-enabled databases. Or if you just want to make one spatially enabled database, you can modify the commands for your needs.

sudo -u postgres createdb template_postgis
sudo -u postgres psql -d template_postgis -f /usr/share/postgresql/9.1/contrib/postgis-1.5/postgis.sql
sudo -u postgres psql -d template_postgis -f /usr/share/postgresql/9.1/contrib/postgis-1.5/spatial_ref_sys.sql
sudo -u postgres psql -d template_postgis -f /usr/share/postgresql/9.1/contrib/postgis_comments.sql

See also