Install wp-cli and run something like the following:
wp post create --post_type=page --post_status=publish --post_title='Home' wp post create --post_type=page --post_status=publish --post_title='About' wp post create --post_type=page --post_status=publish --post_title='News' wp post create --post_type=page --post_status=publish --post_title='Contact'