157 lines
4.0 KiB
HTML
157 lines
4.0 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of UUIDD</TITLE>
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</HEAD><BODY>
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<H1>UUIDD</H1>
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Section: System Administration (8)<BR>Updated: July 2014<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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uuidd - UUID generation daemon
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>uuidd</B>
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[options]
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>uuidd</B>
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daemon is used by the UUID library to generate
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universally unique identifiers (UUIDs), especially time-based UUIDs,
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in a secure and guaranteed-unique fashion, even in the face of large
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numbers of threads running on different CPUs trying to grab UUIDs.
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<DL COMPACT>
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<DT id="1"><B>-d</B>,<B> --debug </B>
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<DD>
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Run uuidd in debugging mode. This prevents uuidd from running as a daemon.
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<DT id="2"><B>-F</B>,<B> --no-fork </B>
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<DD>
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Do not daemonize using a double-fork.
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<DT id="3"><B>-k</B>,<B> --kill </B>
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<DD>
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If currently a uuidd daemon is running, kill it.
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<DT id="4"><B>-n</B>,<B> --uuids </B><I>number</I>
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<DD>
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When issuing a test request to a running uuidd, request a bulk response
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of
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<I>number</I>
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UUIDs.
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<DT id="5"><B>-P</B>,<B> --no-pid </B>
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<DD>
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Do not create a pid file.
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<DT id="6"><B>-p</B>,<B> --pid </B><I>path</I>
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<DD>
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Specify the pathname where the pid file should be written. By default,
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the pid file is written to /run/uuidd/uuidd.pid.
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<DT id="7"><B>-q</B>,<B> --quiet </B>
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<DD>
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Suppress some failure messages.
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<DT id="8"><B>-r</B>,<B> --random </B>
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<DD>
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Test uuidd by trying to connect to a running uuidd daemon and
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request it to return a random-based UUID.
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<DT id="9"><B>-S</B>,<B> --socket-activation </B>
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<DD>
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Do not create a socket but instead expect it to be provided by the calling
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process. This implies <B>--no-fork</B> and <B>--no-pid</B>. This option is
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intended to be used only with <B><A HREF="/cgi-bin/man/man2html?1+systemd">systemd</A></B>(1). It needs to be enabled with
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a configure option.
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<DT id="10"><B>-s</B>,<B> --socket </B><I>path</I>
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<DD>
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Make uuidd use this pathname for the unix-domain socket. By default, the
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pathname used is /run/uuidd/request. This option is primarily
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for debugging purposes, since the pathname is hard-coded in the libuuid
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library.
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<DT id="11"><B>-T</B>,<B> --timeout </B><I>number</I>
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<DD>
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Make uuidd exit after <I>number</I> seconds of inactivity.
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<DT id="12"><B>-t</B>,<B> --time </B>
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<DD>
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Test uuidd by trying to connect to a running uuidd daemon and
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request it to return a time-based UUID.
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<DT id="13"><B>-V</B>,<B> --version </B>
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<DD>
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Output version information and exit.
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<DT id="14"><B>-h</B>,<B> --help </B>
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<DD>
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Display help screen and exit.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>EXAMPLE</H2>
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Start up a daemon, print 42 random keys, and then stop the daemon:
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<P>
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<DL COMPACT><DT id="15"><DD>
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<PRE>
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uuidd -p /tmp/uuidd.pid -s /tmp/uuidd.socket
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uuidd -d -r -n 42 -s /tmp/uuidd.socket
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uuidd -d -k -s /tmp/uuidd.socket
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</DL>
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</PRE><A NAME="lbAG"> </A>
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<H2>AUTHOR</H2>
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The
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<B>uuidd</B>
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daemon was written by Theodore Ts'o <<A HREF="mailto:tytso@mit.edu">tytso@mit.edu</A>>.
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+uuid">uuid</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?1+uuidgen">uuidgen</A></B>(1)
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<A NAME="lbAI"> </A>
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<H2>AVAILABILITY</H2>
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The uuidd daemon is part of the util-linux package and is available from the
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Linux Kernel Archive
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="16"><A HREF="#lbAB">NAME</A><DD>
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<DT id="17"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="18"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="19"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="20"><A HREF="#lbAF">EXAMPLE</A><DD>
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<DT id="21"><A HREF="#lbAG">AUTHOR</A><DD>
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<DT id="22"><A HREF="#lbAH">SEE ALSO</A><DD>
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<DT id="23"><A HREF="#lbAI">AVAILABILITY</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:06:18 GMT, March 31, 2021
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</BODY>
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</HTML>
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