#!/bin/sh

tmp=${TMPDIR-/tmp}/pacman-disowned-$UID-$$
db=$tmp/db
fs=$tmp/fs

mkdir "$tmp"

pacman -Qlq | sort -u > "$db"

find /bin /etc /lib /sbin /usr \
  ! -name lost+found \
  \( -type d -printf '%p/\n' -o -print \) | sort > "$fs"

comm -23 "$fs" "$db"