Usage: dpkg-vendor [<option>...] [<command>]

Commands:
      --is <vendor>
          Returns true if current vendor is <vendor>.
      --derives-from <vendor>
          Returns true if current vendor derives from <vendor>.
      --query <field>
          Print the content of the vendor-specific field.
      --help
          Show this help message.
      --version
          Show the version.

Options:
      --vendor <vendor>
          Assume <vendor> is the current vendor.