A utility that help list all package for Debian 3.1

debian31:~# cat listall.sh
#!/bin/bash

for i in /var/lib/dpkg/info/*.list
do
  package=`basename $i  sed s/.list//g`
  if [ "$1" == "list" ]; then
     echo $package
  else
     echo ""
     dpkg --print-avail $package
     cat $i
  fi
done