xxd
vimtutor
vimdiff
vim
view
vi
rvim
rview
ex
sg
passwd
newgrp
login
gpasswd
expiry
chsh
chfn
chage
update-alternatives
dpkg
dpkg-trigger
dpkg-statoverride
dpkg-split
dpkg-query
dpkg-maintscript-helper
dpkg-divert
dpkg-deb
apt-transport-mirror
apt-transport-https
apt-transport-http
apt-sortpkgs
apt-ftparchive
apt-extracttemplates
zsoelim
whatis
manpath
manconv
man
man-recode
lexgrog
apropos
which
tempfile
sensible-editor
debconf
debconf-show
debconf-set-selections
debconf-escape
debconf-copydb
debconf-communicate
debconf-apt-progress