# apt-config
# APT Configuration Query program

# List all APT (and related) configuration options and their values.
apt-config dump

# List regular expressions used to match packages to be ignored by apt-get(8)'s
# `autoremove` functionality. Assumes `;` or some other undesired character
# will be at the end of the string.
apt-config dump | awk '/^APT::NeverAutoRemove::/ {print(substr($2, 0, length($2) - 1))}'