vipw
vigr
usermod
userdel
useradd
pwunconv
pwconv
pwck
nologin
newusers
lastlog
grpunconv
grpconv
grpck
groupmod
groupmems
groupdel
groupadd
faillog
chpasswd
apt
apt-secure
apt-mark
apt-key
apt-get
apt-config
apt-cdrom
apt-cache
deluser
delgroup
adduser
addgroup
mandb
catman
accessdb
savelog
run-parts
remove-shell
installkernel
add-shell