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update-desktop-database(1)                          update-desktop-database(1)




NAME

       update-desktop-database - Build cache database of MIME types handled by
       desktop files


SYNOPSIS

       update-desktop-database [-q|--quiet] [-v|--verbose] [DIRECTORY...]


DESCRIPTION

       The update-desktop-database program is a tool to build a cache database
       of the MIME types handled by desktop files.

       The  cache database contains the list of MIME types that can be handled
       by desktop files, as well as, for each MIME type,  a  list  of  desktop
       files that can handle this MIME type. This cache database ease the work
       of applications that need to find an application that can open a  docu-
       ment of a specific MIME type: those applications will not have to parse
       all the desktop files existing on the system,  and  can  instead  parse
       this cache database.

       If  no  DIRECTORY is specified as argument, the desktop files that will
       be processed are the ones installed in $XDG_DATA_DIRS/applications.

       If both the --quiet and --verbose options are used, then --verbose will
       be ignored.


OPTIONS

       The following options are supported:

       -q, --quiet
              Do  not  display  any  information about processing and updating
              progress.

       -v, --verbose
              Display more information about processing and updating progress.


NOTES

       If  an invalid MIME type is met, it will be ignored and the creation of
       the cache database will continue.

       The format of the cache database is a simple desktop entry format, with
       a  MIME  Cache group, containing one key per MIME type. The key name is
       the MIME type, and the key value is the list of desktop file  that  can
       handle this MIME type.

       The  order  of  the desktop files found for a MIME type is not signifi-
       cant.  Therefore, an external mechanism must be used to determine  what
       is the preferred desktop file for a MIME type.


EXAMPLE

       Here is a simple example of a cache database:

               [MIME Cache]
               application/x-shellscript=gedit.desktop;
               text/plain=gedit.desktop;gvim.desktop;
               video/webm=totem.desktop;

       This  cache database is created with three desktop files, each contain-
       ing a MimeType key:

               gedit.desktop: MimeType=text/plain;application/x-shellscript;
               gvim.desktop: MimeType=text/plain;
               totem.desktop: MimeType=video/webm;


FILES

       $XDG_DATA_DIRS/applications/mimeinfo.cache

              This file is the cache database created by  update-desktop-data-
              base.


BUGS

       If  you find bugs in the update-desktop-database program, please report
       these on https://bugs.freedesktop.org.



                                FREEDESKTOP.ORG     update-desktop-database(1)

desktop-file-utils 0.18 - Generated Fri Jan 14 08:03:30 CST 2011
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