I am trying to install PostGIS on Ubuntu 12.04 and I think everything is installed correctly except for postgresql. I followed this post. I get the following error and nothing I do seems to satisfy the unmet dependency.
dpkg: error processing /var/cache/apt/archives/postgresql-9.1-postgis_2.0.1-2~precise3_amd64.deb (--unpack): trying to overwrite '/usr/lib/postgresql/9.1/lib/rtpostgis-2.0.so', which is also in package postgresql-9.1-postgis2 2.0.0-1ubuntu1~ppa18~precise1 dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/postgresql-9.1-postgis_2.0.1-2~precise3_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)
A little help for this ubuntu/gis novice.