UPDATEDB(1)                 General Commands Manual                UPDATEDB(1)

       updatedb - update a file name database

       updatedb [options]

       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 file name database format changed starting with GNU find and locate
       version 4.0 to allow machines with different byte orderings to share
       the databases.  The new GNU locate can read both the old and new
       database formats.  However, old versions of locate and find produce
       incorrect results if given a new-format database.

       --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 the old format.  This is a synonym for

              Create the database in format F.  The default format is called
              LOCATE02.  F can be old to select the old database format (this
              is the same as specifying --old-format).  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 root.

              Print the version number of updatedb and exit.

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

       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

       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  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