pierce-jason

comm -23 <(apt list --installed | cut -d' ' -f1) <(gzip -dc /var/log/installer/initial-status.gz | sed -n 's/^Package: //p')
aptitude search '~i !~M' -F '%p' | sed "s/ *$//" | sort -u | comm -23 - <(gzip -dc /var/log/installer/initial-status.gz | sed -n 's/^Package: //p' | sort -u)
dpkg -l | grep ^ii | awk '{print $2, $3}' | sort -k2nr