Using a field for populating the meta-tags of view pages I've got taxonomy pages that are emulated by real views. The vocabulary terms have an additional field "field_meta_description", where meta-description tags can be added. On the view page of each term, this field should be used to populate the content of the html tag &lt;meta name="description"/&gt;.
How can this be accomplished? I know there are some modules out there like metatag, but I am looking for a custom way to do it by lightweight self-coding.
Assuming Drupal 7:

You can go for implementing hook_page_alter() in your theme's template.php and use drupal_add_html_head() to insert your own metatags. Following the link you will find lots of exmples in the comments.