updatedb(1) — Linux manual page


UPDATEDB(1)                General Commands Manual               UPDATEDB(1)

NAME         top

       updatedb - update a file name database

SYNOPSIS         top

       updatedb [options]

DESCRIPTION         top

       This manual page documents the GNU version of updatedb, which updates
       file name databases used by GNU locate.  The file name databases
       contain lists of files that were in particular directory trees when
       the databases were last updated.  The file name of the default
       database is determined when locate and updatedb are configured and
       installed.  The frequency with which the databases are updated and
       the directories for which they contain entries depend on how often
       updatedb is run, and with which arguments.

       In networked environments, it often makes sense to build a database
       at the root of each filesystem, containing the entries for that
       filesystem.  updatedb is then run for each filesystem on the
       fileserver where that filesystem is on a local disk, to prevent
       thrashing the network.  Users can select which databases locate
       searches using an environment variable or command line option; see
       locate(1).  Databases cannot be concatenated together.

       The @samp{LOCATGE02} database format was introduced in GNU findutils
       version 4.0 in order to allow machines with different byte orderings
       to share the databases.  GNU locate can read both the old and
       @samp{LOCATE02} database formats, though support for the old pre-4.0
       database format will be removed shortly.

OPTIONS         top

       --findoptions='-option1 -option2...'
              Global options to pass on to find.  The environment variable
              FINDOPTIONS also sets this value.  Default is none.

       --localpaths='path1 path2...'
              Non-network directories to put in the database.  Default is /.

       --netpaths='path1 path2...'
              Network (NFS, AFS, RFS, etc.) directories to put in the
              database.  The environment variable NETPATHS also sets this
              value.  Default is none.

       --prunepaths='path1 path2...'
              Directories to not put in the database, which would otherwise
              be.  Remove any trailing slashes from the path names,
              otherwise updatedb won´t recognise the paths you want to omit
              (because it uses them as regular expression patterns).  The
              environment variable PRUNEPATHS also sets this value.  Default
              is /tmp /usr/tmp /var/tmp /afs.

              File systems to not put in the database, which would otherwise
              be.  Note that files are pruned when a file system is reached;
              any file system mounted under an undesired file system will be
              ignored.  The environment variable PRUNEFS also sets this
              value.  Default is nfs NFS proc.

              The database file to build.  Default is system-dependent.  In
              Debian GNU/Linux, the default is /var/cache/locate/locatedb.

              The user to search non-network directories as, using su(1).
              Default is to search the non-network directories as the
              current user.  You can also use the environment variable
              LOCALUSER to set this user.

              The user to search network directories as, using su(1).
              Default is daemon.  You can also use the environment variable
              NETUSER to set this user.

              Create the database in format F.  The default format is called
              LOCATE02.  Alternatively the slocate format is also supported.
              When the slocate format is in use, the database produced is
              marked as having security level 1.  If you want to build a
              system-wide slocate database, you may want to run updatedb as

              Print the version number of updatedb and exit.

       --help Print a summary of the options to updatedb and exit.

SEE ALSO         top

       find(1), locate(1), locatedb(5), xargs(1)

       The full documentation for updatedb is maintained as a Texinfo
       manual.  If the info and updatedb programs are properly installed at
       your site, the command info updatedb should give you access to the
       complete manual.

COPYRIGHT         top

       Copyright © 1994-2020 Free Software Foundation, Inc.  License GPLv3+:
       GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

BUGS         top

       The updatedb program correctly handles filenames containing newlines,
       but only if the system's sort command has a working -z option.  If
       you suspect that locate may need to return filenames containing
       newlines, consider using its --null option.

       The best way to report a bug is to use the form at
       https://savannah.gnu.org/bugs/?group=findutils.  The reason for this
       is that you will then be able to track progress in fixing the
       problem.   Other comments about updatedb(1) and about the findutils
       package in general can be sent to the bug-findutils mailing list.  To
       join the list, send email to bug-findutils-request@gnu.org.

COLOPHON         top

       This page is part of the findutils (find utilities) project.
       Information about the project can be found at 
       ⟨http://www.gnu.org/software/findutils/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://savannah.gnu.org/bugs/?group=findutils⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨git://git.savannah.gnu.org/findutils.git⟩ on 2020-08-13.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-06-22.)  If you discover any rendering problems in
       this HTML version of the page, or you believe there is a better or
       more up-to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not part
       of the original manual page), send a mail to man-pages@man7.org


Pages that refer to this page: find(1)locate(1)updatedb(1)xargs(1)