debian: список зависимостей

apt-cache depends `dpkg -l | awk '{print $2}'` 2>/dev/null

dpkg --list   показывает все установленные пакеты.
dpkg --status пакет   показывает подробную информацию о пакете, в том чисте и зависимости:

dpkg --status apache2
Package: apache2
Status: install ok installed
Priority: optional
Section: web
Installed-Size: 64
Maintainer: Debian Apache Maintainers <debian-apache@lists.debian.org>
Architecture: all
Version: 2.2.3-4+etch4
Depends: apache2-mpm-worker (>= 2.2.3-4+etch4) | apache2-mpm-prefork (>= 2.2.3-4+etch4) | apache2-mpm-event (>= 2.2.3-4+etch4)
Description: Next generation, scalable, extendable web server
 Apache v2 is the next generation of the omnipresent Apache web server. This
 version - a total rewrite - introduces many new improvements, such as
 threading, a new API, IPv6 support, request/response filtering, and more.