USERDEL (man8)
userdel − delete a user account and related files
userdel − delete a user account and related files
nfnl_osf − OS fingerprint loader utility
ntfsclone − Efficiently clone, image, restore or rescue an NTFS
tcpdchk − tcp wrapper configuration checker
era_invalidate – Provide a list of blocks that have changed since a particular era.
pam_faildelay − Change the delay on failure per−application
dmsetup — low level logical volume management
ip-addrlabel − protocol address label management
tunelp − set various parameters for the lp device
iwpriv − configure optionals (private) parameters of a wireless network interface