the conf/trac.ini file of the newly created environment.
    Relative paths are resolved relative to the "conf" directory of the new
    environment.

attachment add &lt;realm:id&gt; &lt;path&gt; [author] [description]

    Attach a file to a resource

    The resource is identified by its realm and identifier. The attachment will
    be named according to the base name of the file.

attachment export &lt;realm:id&gt; &lt;name&gt; [destination]

    Export an attachment from a resource to a file or stdout

