aptitude -F'|%p|%d|' search '?section(hamradio)'

aptitude -F'|%p|%d|' search '?section(hamradio) !~i'

aptitude -F'|%p|%d|' search '?section(hamradio) ~r native'

aptitude -F'|%p|%d|' search '~s hamradio ~r native'

grep-aptavail -F Section hamradio

grep-aptavail -n -F Section -s Package hamradio

grep-aptavail -n -F Section -s Package hamradio | sort | uniq

grep-aptavail -n -F Section -s Package hamradio | sort -u

grep-aptavail -n -s Package,Description -F Section hamradio |paste -sd '||n' |sed 's:^:|:' |sort -u

$ dpkg-query -W -f='${binary:Package} ${Section}n' | awk '{if ($2 == "shells") {print $1}}'
bash
bash-completion
busybox-initramfs
busybox-static
dash
zsh
zsh-common