266 lines
6.7 KiB
HTML
266 lines
6.7 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 updatedb</TITLE>
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</HEAD><BODY>
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<H1>updatedb</H1>
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Section: Maintenance Commands (8)<BR>Updated: Jun 2008<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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<P>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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updatedb - update a database for mlocate
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<P>
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<P>
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<B>updatedb</B> [<I>OPTION</I>]...
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<P>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<B>updatedb</B>
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creates or updates a database used by
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1).
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If the database already exists,
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its data is reused
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to avoid rereading directories that have not changed.
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<P>
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<B>updatedb</B>
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is usually run daily by
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<B><A HREF="/cgi-bin/man/man2html?8+cron">cron</A></B>(8)
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to update the default database.
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<P>
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<A NAME="lbAE"> </A>
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<H2>EXIT STATUS</H2>
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<B>updatedb</B>
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returns with exit status 0 on success, 1 on error.
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<P>
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<A NAME="lbAF"> </A>
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<H2>OPTIONS</H2>
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The <B>PRUNE_BIND_MOUNTS</B>, <B>PRUNEFS</B>,
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<B>PRUNENAMES</B>
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and
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<B>PRUNEPATHS</B>
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variables, which are modified by some of the options, are documented in detail
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in
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<B><A HREF="/cgi-bin/man/man2html?5+updatedb.conf">updatedb.conf</A></B>(5).
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<P>
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<DL COMPACT>
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<DT id="1"><B>-f</B>, <B>--add-prunefs </B><I>FS</I><DD>
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Add entries in white-space-separated list <I>FS</I> to <B>PRUNEFS</B>.
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<P>
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<DT id="2"><B>-n</B>, <B>--add-prunenames </B><I>NAMES</I><DD>
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Add entries in white-space-separated list <I>NAMES</I> to <B>PRUNENAMES</B>.
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<P>
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<DT id="3"><B>-e</B>, <B>--add-prunepaths </B><I>PATHS</I><DD>
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Add entries in white-space-separated list <I>PATHS</I> to <B>PRUNEPATHS</B>.
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<P>
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<DT id="4"><B>-U</B>, <B>--database-root</B> <I>PATH</I><DD>
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Store only results of scanning the file system subtree rooted at <I>PATH</I> to
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the generated database.
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The whole file system is scanned by default.
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<P>
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1)
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outputs entries as absolute path names which don't contain symbolic links,
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regardless of the form of <I>PATH</I>.
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<P>
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<DT id="5"><B>--debug-pruning</B><DD>
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Write debugging information about pruning decisions to standard error output.
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<P>
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<DT id="6"><B>-h</B>, <B>--help</B><DD>
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Write a summary of the available options to standard output
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and exit successfully.
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<P>
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<DT id="7"><B>-o</B>, <B>--output</B> <I>FILE</I><DD>
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Write the database to
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<I>FILE</I>
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instead of using the default database.
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<P>
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<DT id="8"><B>--prune-bind-mounts</B> <I>FLAG</I><DD>
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Set
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<B>PRUNE_BIND_MOUNTS</B>
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to <I>FLAG</I>, overriding the configuration file.
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<P>
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<DT id="9"><B>--prunefs</B> <I>FS</I><DD>
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Set <B>PRUNEFS</B> to <I>FS</I>, overriding the configuration file.
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<P>
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<DT id="10"><B>--prunenames</B> <I>NAMES</I><DD>
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Set <B>PRUNENAMES</B> to <I>NAMES</I>, overriding the configuration file.
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<P>
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<DT id="11"><B>--prunepaths</B> <I>PATHS</I><DD>
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Set <B>PRUNEPATHS</B> to <I>PATHS</I>, overriding the configuration file.
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<P>
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<DT id="12"><B>-l</B>, <B>--require-visibility</B> <I>FLAG</I><DD>
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Set the ``require file visibility before reporting it'' flag in the
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generated database to <I>FLAG</I>.
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<P>
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If
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<I>FLAG</I>
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is
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<B>0</B>
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or <B>no</B>,
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or if the database file is readable by "others"
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or it is not owned by <B>mlocate</B>,
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1)
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outputs the database entries even if the user running
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1)
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could not have read the directory necessary to find out the file described
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by the database entry.
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<P>
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If
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<I>FLAG</I>
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is
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<B>1</B>
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or
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<B>yes</B>
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(the default),
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1)
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checks the permissions of parent directories of each entry
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before reporting it to the invoking user.
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To make the file existence truly hidden from other users, the database
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group is set to
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<B>mlocate</B>
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and the database permissions prohibit reading the database by users using
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other means than
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1),
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which is set-gid <B>mlocate</B>.
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<P>
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Note that the visibility flag is checked only if the database is owned by
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<B>mlocate</B>
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and it is not readable by "others".
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<P>
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<DT id="13"><B>-v</B>, <B>--verbose</B><DD>
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Output path names of files to standard output, as soon as they are found.
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<P>
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<DT id="14"><B>-V</B>, <B>--version</B><DD>
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Write information about the version and license of
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<B>locate</B>
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on standard output and exit successfully.
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<P>
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</DL>
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<A NAME="lbAG"> </A>
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<H2>EXAMPLES</H2>
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To create a private mlocate database as an user other than <B>root</B>,
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run
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<DL COMPACT><DT id="15"><DD>
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<B>updatedb -l 0 -o</B>
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<I>db_file</I>
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<B>-U</B>
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<I>source_directory</I>
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</DL>
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Note that all users that can read
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<I>db_file</I>
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can get the complete list of files in the subtree of <I>source_directory</I>.
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<P>
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<A NAME="lbAH"> </A>
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<H2>FILES</H2>
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<DL COMPACT>
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<DT id="16"><B>/etc/updatedb.conf</B><DD>
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A configuration file. See
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<B><A HREF="/cgi-bin/man/man2html?5+updatedb.conf">updatedb.conf</A></B>(5).
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<P>
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<DT id="17"><B>/var/lib/mlocate/mlocate.db</B><DD>
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The database updated by default.
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<P>
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</DL>
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<A NAME="lbAI"> </A>
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<H2>SECURITY</H2>
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Databases built with
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<B>--require-visibility no</B>
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allow users to find names of files and directories of other users,
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which they would not otherwise be able to do.
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<P>
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<A NAME="lbAJ"> </A>
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<H2>NOTES</H2>
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The accompanying
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1)
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utility was designed to be compatible to
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<B>slocate</B>
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and attempts to be compatible to
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<FONT SIZE="-1">GNU</FONT>
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<B>locate</B>
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where possible.
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This is not the case for <B>updatedb</B>.
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<P>
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<A NAME="lbAK"> </A>
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<H2>AUTHOR</H2>
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Miloslav Trmac <<A HREF="mailto:mitr@redhat.com">mitr@redhat.com</A>>
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<P>
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<A NAME="lbAL"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?1+locate">locate</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?5+mlocate.db">mlocate.db</A></B>(5),
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<B><A HREF="/cgi-bin/man/man2html?5+updatedb.conf">updatedb.conf</A></B>(5)
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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="18"><A HREF="#lbAB">NAME</A><DD>
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<DT id="19"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="20"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="21"><A HREF="#lbAE">EXIT STATUS</A><DD>
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<DT id="22"><A HREF="#lbAF">OPTIONS</A><DD>
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<DT id="23"><A HREF="#lbAG">EXAMPLES</A><DD>
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<DT id="24"><A HREF="#lbAH">FILES</A><DD>
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<DT id="25"><A HREF="#lbAI">SECURITY</A><DD>
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<DT id="26"><A HREF="#lbAJ">NOTES</A><DD>
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<DT id="27"><A HREF="#lbAK">AUTHOR</A><DD>
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<DT id="28"><A HREF="#lbAL">SEE ALSO</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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