前 に Debian のパッケージ一覧ファイル Packages.gz を無理やり作るスクリプトを書いたが，
やっぱりそれようのコマンドが用意されてた(T_T)．
その名も
dpkg-scanpackages．どうやって見つけたかというと，
takayuki@sanapon:~$ man -k Packages

Term::ReadLine (3pm) - Perl interface to various readline packages. If no real

 package is found, substitutes stubs instead of basic functions.

deb-control (5)      - Debian GNU/Linux packages' master control file format

dh_builddeb (1)      - build debian packages

dh_listpackages (1)  - list binary packages debhelper will act on

dh_movefiles (1)     - move files out of debian/tmp into subpackages

dpkg-name (1)        - rename Debian packages to full package names

dpkg-preconfigure (8) - let packages ask questions prior to their installation

dpkg-scanpackages (8) - create Packages files .

kernel-img.conf (5)  - site wide configuration file for kernel image packages

kernel-package (5)   - A system for creating kernel related packages

make-kpkg (1)        - build Debian kernel packages from Linux kernel sources

perlmod (1p)         - Perl modules (packages and symbol tables)

tasksel (8)          - a user interface for installing task packages

autoconf (1)         - creates scripts to configure source code packages using

 templates
そういえばそんな使い方あったねえ＞man


しかし肝心の dpkg-scanpackages の使い方はいまいちよく分からない．
takayuki@sanapon:/var/www/debian/dists/potato$ dpkg-scanpackages

 main/binary-i386 /dev/null | gzip > /tmp/Packages.gz
???