man-pages/man5/securetty.5.html
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<H1>SECURETTY</H1>
Section: Linux Programmer's Manual (5)<BR>Updated: 2015-03-29<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
securetty - file which lists terminals from which root can log in
<A NAME="lbAC">&nbsp;</A>
<H2>DESCRIPTION</H2>
The file
<I>/etc/securetty</I>
contains the names of terminals
(one per line, without leading
<I>/dev/</I>)
which are considered secure for the transmission of certain authentication
tokens.
<P>
It is used by (some versions of)
<B><A HREF="/cgi-bin/man/man2html?1+login">login</A></B>(1)
to restrict the terminals
on which root is allowed to login.
See
<B><A HREF="/cgi-bin/man/man2html?5+login.defs">login.defs</A></B>(5)
if you use the shadow suite.
<P>
On PAM enabled systems, it is used for the same purpose by
<B><A HREF="/cgi-bin/man/man2html?8+pam_securetty">pam_securetty</A></B>(8)
to restrict the terminals on which empty passwords are accepted.
<A NAME="lbAD">&nbsp;</A>
<H2>FILES</H2>
<I>/etc/securetty</I>
<A NAME="lbAE">&nbsp;</A>
<H2>SEE ALSO</H2>
<B><A HREF="/cgi-bin/man/man2html?1+login">login</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?5+login.defs">login.defs</A></B>(5),
<B><A HREF="/cgi-bin/man/man2html?8+pam_securetty">pam_securetty</A></B>(8)
<A NAME="lbAF">&nbsp;</A>
<H2>COLOPHON</H2>
This page is part of release 5.05 of the Linux
<I>man-pages</I>
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="1"><A HREF="#lbAB">NAME</A><DD>
<DT id="2"><A HREF="#lbAC">DESCRIPTION</A><DD>
<DT id="3"><A HREF="#lbAD">FILES</A><DD>
<DT id="4"><A HREF="#lbAE">SEE ALSO</A><DD>
<DT id="5"><A HREF="#lbAF">COLOPHON</A><DD>
</DL>
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Time: 00:06:05 GMT, March 31, 2021
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