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updatedb


Section: Maintenance Commands (8)
Updated: Jun 2008
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NAME

updatedb – update a database for mlocate


 

SYNOPSIS


updatedb [OPTION]…


 

DESCRIPTION

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 database.


 

EXIT STATUS

updatedb

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


 

OPTIONS

The PRUNE_BIND_MOUNTS, PRUNEFS,
PRUNENAMES

and
PRUNEPATHS

variables, which are modified by some of the options, are documented in detail
in
updatedb.conf(5).



-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.


–debug-pruning

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 database.


–prune-bind-mounts FLAG

Set
PRUNE_BIND_MOUNTS

to FLAG, overriding the configuration file.


–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 slocate,
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
slocate

and the database permissions prohibit reading the database by users using
other means than
locate(1),

which is set-gid slocate.


Note that the visibility flag is checked only if the database is owned by
slocate

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.



 

EXAMPLES

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.


 

FILES


/etc/updatedb.conf

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


/var/lib/mlocate/mlocate.db

The database updated by default.



 

SECURITY

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.


 

NOTES

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.


 

AUTHOR

Miloslav Trmac <[email protected]>


 

SEE ALSO

locate(1),

mlocate.db(5),

updatedb.conf(5)



 

Index



NAME

SYNOPSIS

DESCRIPTION

EXIT STATUS

OPTIONS

EXAMPLES

FILES

SECURITY

NOTES

AUTHOR

SEE ALSO



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