Exercises

Components and Services

Note

Hint, if bash-completion is installed, try <TAB><TAB> to get completions.

1. Start/stop services

   $ sudo service apache2
   $ sudo service apache2 reload
   $ sudo service tomcat7
   $ sudo service postgresql
   

2. Basic psql interactions

   $ sudo su - postgres
   $ psql
   => help                 # get help
   => \?                   # psql specific commands
   => \l                   # list databases
   => \c geonode           # switch database
   => \ds                  # list tables
   => \dS layers_layer     # describe table
   

OGC Standards

WMS

1. Use the layer preview functionality in GeoServer to bring up a web map.
2. Copy the URL for the image in the map.
3. Alter URL parameters for the request.
4. Use curl to get the capabilities document

$ curl 'http://localhost/geoserver/wms?request=getcapabilities'

More: http://docs.geoserver.org/stable/en/user/services/wms/index.html

WFS

1. Describe a feature type using curl (replace ws:name with your layer)

$ curl 'http://localhost/geoserver/wfs?request=describefeaturetype&name=ws:name

More: http://docs.geoserver.org/stable/en/user/services/wfs/reference.html