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mandb(8) Manual pager utils mandb(8)
NAME
mandb - create or update the manual page index caches
SYNOPSIS
mandb [-dqsuc|-h|-V] [manpath]
DESCRIPTION
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 infor-
mation 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.
DATABASE CACHES
mandb can be compiled with support for any one of the following
database types.
Name Type Async Filename
----------------------------------------------------------
Berkeley db Binary tree Yes index.bt
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 termi-
nation. In an unusual case where this has occured, it may be necessary
to rerun mandb with the -c option to re-create the databases from
scratch.
OPTIONS
-d, --debug
Produce debugging information.
-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 databases.
-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 neces-
sary to create system databases.
-t, --test
Perform correctness checks on manual pages in the hierarchy
search path. With this option, mandb will not alter existing
databases.
-h, --help
Show the usage message, then exit.
-V, --version
Show the version, then exit.
EXIT STATUS
0 Successful program execution.
1 Usage, syntax, or configuration file error.
2 Operational error.
3 A child process failed.
DIAGNOSTICS
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 sys-
tem 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 <file-
name> 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>: ignoring bogus filename
The <filename> may or may not be a valid manual page but its
name is invalid. This is usually due to a manual page with sec-
tional extension <x> being put in manual page section <y>.
<filename_mask>: competing extensions
The wildcard <filename_mask> is not unique. This is usually
caused by the existence of both a compressed and uncompressed
version of the same manual page. All but the most recent are
ignored.
FILES
/etc/manpath.config
man-db configuration file.
/usr/man/index.(bt|db|dir|pag)
A traditional global index database cache.
/var/catman/index.(bt|db|dir|pag)
An alternate or FSSTND compliant global index database cache.
/var/cache/man/index.(bt|db|dir|pag)
An FHS compliant global index database cache.
SEE ALSO
man(1), lexgrog(1), manpath(5), catman(8).
The WHATIS PARSING section formerly in this manual page is now part of
lexgrog(1).
AUTHOR
Wilf. (G.Wilford@ee.surrey.ac.uk).
Fabrizio Polacco (fpolacco@debian.org).
Colin Watson (cjwatson@debian.org).
2.4.1 07 September 2001 mandb(8)
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Tue Feb 13 02:22:34 GMT 2007
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