I am quite a newbie in using Postgres under Ubuntu. I have created a PostgreSQL database and now want to install the PostGIS extension for it so that I can import shapefiles and use the PostGIS commands. PostGIS is installed. I use the bash shell. Can somebody give me advice?
PostGIS is installed as an Extension to each Database.
Once you have created a database,
psql -c "CREATE DATABASE Your_Database_Name;"
you can install Extensions.
psql -d "Your_Database_Name" -c "CREATE EXTENSION postgis;"
psql -d "Your_Database_Name" [Enter]
Your_Database_Name=# CREATE EXTENSION postgis;
Then you can use
ogr2ogr to push Shapefiles to the database, or run the PostGIS functions in your database.