Create content.
drush generate-content
num : Number of nodes to generate.
max_comments : Maximum number of comments to generate.
--kill : Delete all content before generating new content.
--types : A comma delimited list of content types to create. Defaults to page,article.
--feedback : An integer representing interval for insertion rate logging. Defaults to 1000
--skip-fields : A comma delimited list of fields to omit when generating random values
--languages : A comma-separated list of language codes