man-pages/man4/ttyS.4.html
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<HTML><HEAD><TITLE>Man page of TTYS</TITLE>
</HEAD><BODY>
<H1>TTYS</H1>
Section: Linux Programmer's Manual (4)<BR>Updated: 1992-12-19<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>
ttyS - serial terminal lines
<A NAME="lbAC">&nbsp;</A>
<H2>DESCRIPTION</H2>
<B>ttyS[0-3]</B>
are character devices for the serial terminal lines.
<P>
They are typically created by:
<P>
mknod -m 660 /dev/ttyS0 c 4 64 # base address 0x3f8
mknod -m 660 /dev/ttyS1 c 4 65 # base address 0x2f8
mknod -m 660 /dev/ttyS2 c 4 66 # base address 0x3e8
mknod -m 660 /dev/ttyS3 c 4 67 # base address 0x2e8
chown root:tty /dev/ttyS[0-3]
<A NAME="lbAD">&nbsp;</A>
<H2>FILES</H2>
<I>/dev/ttyS[0-3]</I>
<A NAME="lbAE">&nbsp;</A>
<H2>SEE ALSO</H2>
<B><A HREF="/cgi-bin/man/man2html?1+chown">chown</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?1+mknod">mknod</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?4+tty">tty</A></B>(4),
<B><A HREF="/cgi-bin/man/man2html?8+agetty">agetty</A></B>(8),
<B><A HREF="/cgi-bin/man/man2html?8+mingetty">mingetty</A></B>(8),
<B><A HREF="/cgi-bin/man/man2html?8+setserial">setserial</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>
<HR>
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Time: 00:06:02 GMT, March 31, 2021
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