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<H2><A NAME="s1">1. Introduction.</A></H2>
<P>This is the Linux Shadow-Password-HOWTO. This document describes why and how
to add shadow password support on a Linux system. Some examples of how to
use some of the <EM>Shadow Suite's</EM> features is also included.
<P>When installing the <EM>Shadow Suite</EM> and when using many of the utility
programs, you must be logged in as <EM>root</EM>. When installing the
<EM>Shadow Suite</EM> you will be making changes to system software, and it
is highly recommended that you make backup copies of programs as indicated.
I also recommend that you read and understand all the instructions before
you begin.
<P>
<H2><A NAME="ss1.1">1.1 Changes from the previous release.</A>
</H2>
<P>
<PRE>
Additions:
Added a sub-section on why you might not want to install shadow
Added a sub-section on updating the xdm program
Added a section on how to put Shadow Suite features to work
Added a section containing frequently asked questions
Corrections/Updates:
Corrected html references on Sunsite
Corrected section on wu-ftp to reflect adding -lshadow to the Makefile
Corrected minor spelling and verbiage errors
Changed section on wu-ftpd to support ELF
Updated to reflect security problems in various login programs
Updated to recommend the Linux Shadow Suite by Marek Michalkiewicz
</PRE>
<P>
<H2><A NAME="ss1.2">1.2 New versions of this document.</A>
</H2>
<P>The latest released version of this document can always be retrieved by
anonymous FTP from:
<P><B>sunsite.unc.edu</B>
<PRE>
/pub/Linux/docs/HOWTO/Shadow-Password-HOWTO
</PRE>
or:
<PRE>
/pub/Linux/docs/HOWTO/other-formats/Shadow-Password-HOWTO{-html.tar,ps,dvi}.gz
</PRE>
<P>or via the World Wide Web from the
<A HREF="http://sunsite.unc.edu/mdw/linux.html">Linux Documentation Project Web Server</A>, at page:
<A HREF="http://sunsite.unc.edu/linux/HOWTO/Shadow-Password-HOWTO.html">Shadow-Password-HOWTO</A>
or directly from me, <CODE><mhjack@tscnet.com></CODE>. It will
also be posted to the newsgroup: <CODE>comp.os.linux.answers</CODE>
<P>This document is now packaged with the Shadow-YYDDMM packages.
<P>
<P>
<H2><A NAME="ss1.3">1.3 Feedback.</A>
</H2>
<P>Please send any comments, updates, or suggestions to me:
<A HREF="mailto:mhjack@tscnet.com">Michael H. Jackson <mhjack@tscnet.com></A> The sooner I get feedback,
the sooner I can update and correct this document. If you find any problems
with it, please mail me directly as I very rarely stay up-to-date on the
newsgroups.
<P>
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