lfs/chapter06/config-shadowpwd.xml

<sect2><title>Configuring Shadow Password Suite</title>

<para>This package contains utilities to modify users' passwords, add
or delete users and groups, and the like. We're not going to explain 
what 'password shadowing' means. A full explanation can be found in the doc/HOWTO
file within the unpacked shadow password suite's source tree. There's one 
thing to keep in mind if you decide to use shadow support: that 
programs that need to verify passwords (for example xdm, ftp daemons, 
pop3 daemons) need to be 'shadow-compliant', that is they need to
be able to work with shadow'ed passwords.</para>

<para>To enable shadow'ed passwords, run the following command:</para>

<para><screen><userinput>/usr/sbin/pwconv</userinput></screen></para>

</sect2>