/usr/bin/grep-aptavail
/usr/bin/grep-available
/usr/bin/grep-dctrl
/usr/bin/grep-debtags
/usr/bin/grep-status
/usr/bin/join-dctrl
/usr/bin/sort-dctrl
/usr/bin/tbl-dctrl
/usr/sbin/sync-available
You may install this package on Debian with
apt-get
install dctrl-tools