dist-recommends.sh

#!/bin/bash
set -e

# Finds all packages pulled in by the given package
# that have not single a strict dependency on them
# in a Debian-based distro.

recommends_file=$(mktemp)
depends_file=$(mktemp)

apt-rdepends --show=Recommends "$1" | cut --only-delimited -d ' ' -f 4 | sort -u > "$recommends_file"
apt-rdepends "$1" | cut --only-delimited -d ' ' -f 4 | sort -u > "$depends_file"

comm -23 "$recommends_file" "$depends_file"