Provided by: man-db_2.6.1-2_amd64 bug


       mandb - create or update the manual page index caches


       mandb [-dqsucpt|-h|-V] [-C file] [manpath]
       mandb [-dqsut] [-C file] -f filename ...


       mandb  is  used  to  initialise  or manually update index database caches that are usually
       maintained by man.  The caches contain information relevant to the current  state  of  the
       manual  page system and the information stored within them is used by the man-db utilities
       to enhance their speed and functionality.

       When creating or updating an index, mandb will warn of bad ROFF .so requests, bogus manual
       page filenames and manual pages from which the whatis cannot be parsed.

       Supplying  mandb  with  an optional colon-delimited path will override the internal system
       manual page hierarchy search path, determined from information  found  within  the  man-db
       configuration file.


       mandb can be compiled with support for any one of the following database types.

       Name                Type          Async   Filename
       Berkeley db         Binary tree   Yes
       GNU gdbm v >= 1.6   Hashed        Yes     index.db
       GNU gdbm v <  1.6   Hashed        No      index.db
       UNIX ndbm           Hashed        No      index.(dir|pag)

       Those  database types that support asynchronous updates provide enhanced speed at the cost
       of possible corruption in the event of unusual termination.  In an unusual case where this
       has  occurred,  it  may  be  necessary  to rerun mandb with the -c option to re-create the
       databases from scratch.


       -d, --debug
              Foutinformatie tonen.

       -q, --quiet
              Produce no warnings.

       -s, --no-straycats
              Do not spend time looking for or adding  information  to  the  databases  regarding
              stray cats.

       -p, --no-purge
              Do  not  spend  time  checking  for  deleted manual pages and purging them from the

       -c, --create
              By default, mandb will try to  update  any  previously  created  databases.   If  a
              database  does  not  exist,  it will create it.  This option forces mandb to delete
              previous databases and re-create them from scratch, and  implies  --no-purge.  This
              may  be necessary if a database becomes corrupt or if a new database storage scheme
              is introduced in the future.

       -u, --user-db
              Create user databases only, even with write permissions necessary to create  system

       -t, --test
              Perform correctness checks on manual pages in the hierarchy search path.  With this
              option, mandb will not alter existing databases.

       -f, --filename
              Update only the entries for the given filename.  This option  is  not  for  general
              use; it is used internally by man when it has been compiled with the MAN_DB_UPDATES
              option and finds that a page is out of date.  It implies -p and disables -c and -s.

       -C bestand, --config-file=bestand
              Gebruik  dit  gebruikersconfiguratiebestand  in  plaats  van   de   standaard   van

       -h, --help
              Show the usage message, then exit.

       -V, --version
              Show the version, then exit.


       0      Programma correct uitgevoerd.

       1      Usage, syntax, or configuration file error.

       2      Uitvoeringsfout.

       3      A child process failed.


       The following warning messages can be emitted during database building.

       <filename>: whatis parse for page(sec) failed
              An  attempt  to  extract  whatis line(s) from the given <filename> failed.  This is
              usually due to a poorly written manual page, but if many such messages are  emitted
              it  is  likely  that  the  system  contains  non-standard  manual  pages  which are
              incompatible with the man-db whatis parser.  See  the  WHATIS  PARSING  section  in
              lexgrog(1)  for more information.

       <filename>: is a dangling symlink
              <filename>  does  not  exist  but  is  referenced  by  a  symbolic  link.   Further
              diagnostics are usually emitted to identify the <filename> of the offending link.

       <filename>: bad symlink or ROFF `.so' request
              <filename> is either a symbolic link to, or contains a ROFF include request  to,  a
              non existent file.

       <filename>: genegeerde onzin bestandsnaam
               <filename>  kan een al dan niet geldige man-pagina zijn, maar de naam is ongeldig.
              Dit wordt meestal veroorzaakt door een man-pagina met een uitbreiding van de sectie
              <x> die in de man-paginasectie <y> is gestopt.

       <filename_mask>: strijdende extensies
              Het  jokerteken  <filename_mask> is niet uniek.  Dit wordt meestal veroorzaakt door
              het bestaan van zowel  een  gecomprimeerde  als  een  gedecomprimeerde  versie  van
              dezelfde man-pagina.  Alle behalve de meeste recente versie worden genegeerd.



              Een algemene index-database-cache, in overeenstemming met FHS.

       Oudere locaties van de database-cache bestaan uit:

              Een traditionele, algemene index-database-cache.

              An alternate or FSSTND compliant global index database cache.


       lexgrog(1), man(1), manpath(5), catman(8)

       De voormalige sectie WAT IS ONTLEDEN is nu onderdeel van lexgrog(1).


       Wilf. (
       Fabrizio Polacco (
       Colin Watson (