Другой вариант - использовать приложение dpigs из пакета debian-goodies:
NAME
dpigs - Show which installed packages occupy the most space
SYNOPSIS
dpigs [options]
DESCRIPTION
dpigs sorts the installed packages by size and outputs the largest ones. Per
default dpigs displays the largest 10 packages. You can change this value by
using the -n option (see "OPTIONS"). The information is taken from the dpkg
status file with grep-status(1).
OPTIONS
-h, --help
Display some usage information and exit.
-n, --lines=N
Display the N largest packages on the system (default 10).
-s, --status=FILE
Use FILE instead of the default dpkg status file (which is /var/lib/dpkg/status
currently).
-S, --source
Display the largest source packages of binary packages installed on the system.