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       updatedb - update a database for mlocate


       updatedb [OPTION]...


       updatedb  creates  or  updates  a  database  used by locate(1).  If the
       database  already  exists,  its  data  is  reused  to  avoid  rereading
       directories that have not changed.

       updatedb  is  usually  run  daily  by  cron(8)  to  update  the default


       updatedb returns with exit status 0 on success, 1 on error.


       which  are modified by some of the options, are documented in detail in

       -f, --add-prunefs FS
              Add entries in white-space-separated list FS to PRUNEFS.

       -n, --add-prunenames NAMES
              Add entries in white-space-separated list NAMES to PRUNENAMES.

       -e, --add-prunepaths PATHS
              Add entries in white-space-separated list PATHS to PRUNEPATHS.

       -U, --database-root PATH
              Store only results of scanning the file system subtree rooted at
              PATH  to  the  generated  database.   The  whole  file system is
              scanned by default.

              locate(1) outputs entries as absolute  path  names  which  don’t
              contain symbolic links, regardless of the form of PATH.

              Write  debugging information about pruning decisions to standard
              error output.

       -h, --help
              Write a summary of the available options to standard output  and
              exit successfully.

       -o, --output FILE
              Write  the  database  to  FILE  instead  of  using  the  default

       --prune-bind-mounts FLAG
              Set PRUNE_BIND_MOUNTS  to  FLAG,  overriding  the  configuration

       --prunefs FS
              Set PRUNEFS to FS, overriding the configuration file.

       --prunenames NAMES
              Set PRUNENAMES to NAMES, overriding the configuration file.

       --prunepaths PATHS
              Set PRUNEPATHS to PATHS, overriding the configuration file.

       -l, --require-visibility FLAG
              Set  the  “require  file visibility before reporting it” flag in
              the generated database to FLAG.

              If FLAG is 0 or no, or if  the  database  file  is  readable  by
              "others"  or  it  is not owned by mlocate, locate(1) outputs the
              database entries even if the user running  locate(1)  could  not
              have read the directory necessary to find out the file described
              by the database entry.

              If FLAG  is  1  or  yes  (the  default),  locate(1)  checks  the
              permissions of parent directories of each entry before reporting
              it to the invoking user.   To  make  the  file  existence  truly
              hidden  from  other  users, the database group is set to mlocate
              and the database permissions prohibit reading  the  database  by
              users  using  other  means  than  locate(1),  which  is  set-gid

              Note that the visibility flag is checked only if the database is
              owned by mlocate and it is not readable by "others".

       -v, --verbose
              Output  path  names of files to standard output, as soon as they
              are found.

       -V, --version
              Write information about the version and  licence  of  locate  on
              standard output and exit successfully.


       To create a private mlocate database as an user other than root, run
              updatedb -l 0 -o db_file -U source_directory
       Note  that all users that can read db_file can get the complete list of
       files in the subtree of source_directory.


              A configuration file.  See updatedb.conf(5).

              The database updated by default.


       Databases built with --require-visibility no allow users to find  names
       of files and directories of other users, which they would not otherwise
       be able to do.


       The accompanying locate(1) utility was designed  to  be  compatible  to
       slocate  and  attempts  to  be compatible to GNU locate where possible.
       This is not the case for updatedb.


       Miloslav Trmac <>


       locate(1), mlocate.db(5), updatedb.conf(5)