update-desktop-database(1) [centos man page]

UPDATE-DESKTOP-DATABASE(1)				      General Commands Manual					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
       document  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 significant.  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 containing 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-database.

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-INSTALL(1) 				      General Commands Manual					   DESKTOP-FILE-INSTALL(1)

NAME

       desktop-file-install, desktop-file-edit - Installation and edition of desktop files

SYNOPSIS

       desktop-file-install  [--dir=DIR]  [-m  MODE|--mode=MODE] [--vendor=VENDOR] [--delete-original] [--rebuild-mime-info-cache] [EDITOPTION]...
       FILE...

       desktop-file-edit [EDITOPTION]... FILE

DESCRIPTION

       The desktop-file-install program is a tool to install, and optionally edit, desktop files. The desktop-file-edit program is a tool to  edit
       a desktop file. They are mostly useful for developers and packagers.

       Various options are available to edit the desktop files. The edit options can be specified more than once and will be processed in the same
       order as the options passed to the program.

       desktop-file-install and desktop-file-edit will always try to validate the resulting desktop file. A failure to validate might lead to  the
       abortion of the installation of the desktop files.

       The  list  of  registered  categories and desktop environments is defined in the Menu specification: http://freedesktop.org/wiki/Specifica-
       tions/menu-spec.

OPTIONS

       The following options are supported:

       --dir=DIR
	      Install desktop files to the DIR directory.

       -m, --mode=MODE
	      Set the permissions of the destination files to MODE.

       --vendor=VENDOR
	      Add a vendor prefix to the desktop files. If a file already has this prefix, nothing happens; else, the file will be  named  VENDOR-
	      FILE.  For example: if VENDOR is freedesktop.org and FILE is specification.desktop, the result file will be freedesktop.org-specifi-
	      cation.desktop.

       --delete-original
	      Delete the source desktop files, leaving only the target files.  Effectively "renames" the desktop files.

       --rebuild-mime-info-cache
	      Rebuild the MIME types application database after installing the desktop files. See update-desktop-database(1) for information about
	      this database.

EDIT OPTIONS

       The following edit options are supported:

       --set-key=KEY
	      Set the KEY key to the value passed to the next --set-value option. A matching --set-value option is mandatory.

       --set-value=VALUE
	      Set the key specified with the previous --set-key option to VALUE.  A matching --set-key option is mandatory.

       --set-name=NAME
	      Set the name (key Name) to NAME. If a name was already set, it will be overridden. Localizations of the old name will be removed.

       --copy-name-to-generic-name
	      Copy the value of the Name key to the GenericName key. Note that a desktop file requires a Name key to be valid, so this option will
	      always have an effect.

       --set-generic-name=GENERIC-NAME
	      Set the generic name (key GenericName) to GENERIC-NAME. If a generic name was already set, it will be overridden.  Localizations	of
	      the old generic name will be removed.

       --copy-generic-name-to-name
	      Copy the value of the GenericName key to the Name key, if the GenericName key is present.

       --set-comment=COMMENT
	      Set the comment (key Comment) to COMMENT. If a comment was already set, it will be overridden. Localizations of the old comment will
	      be removed.

       --set-icon=ICON
	      Set the icon (key Icon) to ICON. If an icon was already set, it will be overridden. Localizations of the old icon will be removed.

       --add-category=CATEGORY
	      Add CATEGORY to the list of categories (key Categories). If CATEGORY was already present in the list, this operation is a  no-op.  A
	      non-registered category should be prefixed with X-.

       --remove-category=CATEGORY
	      Remove CATEGORY from the list of categories (key Categories). If CATEGORY was not present in the list, this operation is a no-op.

       --add-mime-type=MIME-TYPE
	      Add MIME-TYPE to the list of MIME types (key MimeType). If MIME-TYPE was already present in the list, this operation is a no-op.

       --remove-mime-type=MIME-TYPE
	      Remove MIME-TYPE from the list of MIME types (key MimeType).  If MIME-TYPE was not present in the list, this operation is a no-op.

       --add-only-show-in=ENVIRONMENT
	      Add ENVIRONMENT to the list of desktop environments where the desktop files should be displayed (key OnlyShowIn). If ENVIRONMENT was
	      already present in the list, this operation is a no-op. A non-registered desktop environment should be prefixed with X-.	Note  that
	      an empty OnlyShowIn key in a desktop file means that the desktop file will be displayed in all environments.

       --remove-only-show-in=ENVIRONMENT
	      Remove  ENVIRONMENT  from the list of desktop environments where the desktop files should be displayed (key OnlyShowIn). If ENVIRON-
	      MENT was not present in the list, this operation is a no-op.

       --add-not-show-in=ENVIRONMENT
	      Add ENVIRONMENT to the list of desktop environments where the desktop files should not be displayed (key NotShowIn). If  ENVIRONMENT
	      was  already  present  in the list, this operation is a no-op. A non-registered desktop environment should be prefixed with X-. Note
	      that an empty NotShowIn key in a desktop file means that the desktop file will be displayed in all environments.

       --remove-not-show-in=ENVIRONMENT
	      Remove ENVIRONMENT from the list of desktop environments where the desktop files should not be displayed (key NotShowIn).  If  ENVI-
	      RONMENT was not present in the list, this operation is a no-op.

       --remove-key=KEY
	      Remove the KEY key from the desktop files, if present.

ENVIRONMENT

       Some environment variables change the behavior of desktop-file-install:

       DESKTOP_FILE_VENDOR

	      This  variable  can be used as an alternative to the --vendor option. If the --vendor option is used, this environment variable will
	      be ignored.

       DESKTOP_FILE_INSTALL_DIR

	      This variable can be used as an alternative to the --dir option. If the --dir option is used,  this  environment	variable  will	be
	      ignored.

       RPM_BUILD_ROOT

	      This  variable  is set when building RPM packages. If the --dir option and the DESKTOP_FILE_INSTALL_DIR environment variable are not
	      used, it will automatically be prepended to the default install directory to install the desktop files appropriately  when  building
	      packages.

BUGS

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

SEE ALSO

       desktop-file-validate(1) update-desktop-database(1)

								  FREEDESKTOP.ORG					   DESKTOP-FILE-INSTALL(1)