grep-dctrl 2.1.4 (i386 binary) in ubuntu warty

Grep Debian package information
 The grep-dctrl program can answer such questions as
   * "What is the Debian package foo?"
   * "Which version of the Debian package bar is now current?"
   * "Which Debian packages does John Doe maintain?"
   * "Which Debian packages are somehow related to the Scheme
      programming language?"
 and with some help
   * "Who maintain the essential packages of a Debian system?"
 given a useful input file.
 .
 It is a specialised grep program that is meant for processing any
 file which has the general format of a Debian package control file.
 These include the dpkg available file, the dpkg status file, and the
 Packages files on a distribution medium (such as a Debian CD-ROM or
 an FTP site carrying Debian).
 .
 This package includes the specializations grep-status and
 grep-available, which take their input by default from the dpkg
 status file and the dpkg available file (updated by dselect update),
 respectively. The grep-available specialization is useful mainly to
 users of dselect.