|
HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|
|
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | BUGS | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
|
|
|
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 LOCATE02 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 LOCATE02 database formats, though support for the old
pre-4.0 database format will be removed shortly.
--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.
--prunefs='path...'
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.
--output=dbfile
The database file to build. Default is system-dependent.
In Debian GNU/Linux, the default is
/var/cache/locate/locatedb.
--localuser=user
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.
--netuser=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.
--dbformat=F
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 root.
--version
Print the version number of updatedb and exit.
--help Print a summary of the options to updatedb and exit.
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.
GNU findutils online help:
<https://www.gnu.org/software/findutils/#get-help>
Report any translation bugs to
<https://translationproject.org/team/>
Report any other issue via the form at the GNU Savannah bug
tracker:
<https://savannah.gnu.org/bugs/?group=findutils>
General topics about the GNU findutils package are discussed at
the bug-findutils mailing list:
<https://lists.gnu.org/mailman/listinfo/bug-findutils>
Copyright © 1994–2025 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.
find(1), locate(1), xargs(1), locatedb(5)
Full documentation
<https://www.gnu.org/software/findutils/updatedb>
or available locally via: info updatedb
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 2025-02-02. (At
that time, the date of the most recent commit that was found in
the repository was 2025-01-26.) 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
[email protected]
UPDATEDB(1)
Pages that refer to this page: find(1), locate(1), xargs(1)
|
HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|