SHADOWCONFIG(8) 19 Apr 1997 SHADOWCONFIG(8)
shadowconfig - toggle shadow passwords on and off
shadowconfig on | off
shadowconfig on will turn shadow passwords on; shadowconfig off will
turn shadow passwords off. shadowconfig will print an error message
and exit with a nonzero code if it finds anything awry. If that
happens, you should correct the error and run it again. Turning shadow
passwords on when they are already on, or off when they are already
off, is harmless.
Read /usr/share/doc/passwd/README.Debian for a brief introduction to
shadow passwords and related features.
Note that turning shadow passwords off and on again will lose all
password aging information.
Debian GNU/Linux 19 Apr 1997 SHADOWCONFIG(8)