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XDG-MIME(1)                                                        XDG-MIME(1)



NAME
       xdg-mime - command line tool for querying information about file type handling and adding descriptions for new
       file types

SYNOPSIS
       xdg-mime query {filetype default} ...

       xdg-mime default application mimetype(s)

       xdg-mime install [--mode mode] [--novendor] mimetypes-file

       xdg-mime uninstall [--mode mode] mimetypes-file

       xdg-mime {--help --manual --version}

DESCRIPTION
       The xdg-mime program can be used to query information about file types and to add descriptions for new file
       types.

COMMANDS
       query  Returns information related to file types.

              The query option is for use inside a desktop session only. It is not recommended to use xdg-mime query
              as root.

              The following queries are supported:

              query filetype FILE: Returns the file type of FILE in the form of a MIME type.

              query default mimetype: Returns the default application that the desktop environment uses for opening
              files of type mimetype. The default application is identified by its *.desktop file.

       default
              Ask the desktop environment to make application the default application for opening files of type
              mimetype. An application can be made the default for several file types by specifying multiple
              mimetypes.

              application is the desktop file id of the application and has the form vendor-name.desktop application
              must already be installed in the desktop menu before it can be made the default handler. The
              aplication's desktop file must list support for all the MIME types that it wishes to be the default
              handler for.

              Requests to make an application a default handler may be subject to system policy or approval by the
              end-user. xdg-mime query can be used to verify whether an application is the actual default handler for
              a specific file type.

              The default option is for use inside a desktop session only. It is not recommended to use xdg-mime
              default as root.

       install
              Adds the file type descriptions provided in mimetypes-file to the desktop environment.  mimetypes-file
              must be a XML file that follows the freedesktop.org Shared MIME-info Database specification and that has
              a mime-info element as its document root. For each new file type one or more icons with name major-minor
              must be installed with the xdg-icon-resource command in the mimetypes context. For example the
              application/vnd.oasis.opendocument.text filetype requires an icon by the name of
              application-vnd.oasis.opendocument.text to be installed.

       uninstall
              Removes the file type descriptions provided in mimetypes-file and previously added with xdg-mime install
              from the desktop environment.  mimetypes-file must be a XML file that follows the freedesktop.org Shared
              MIME-info Database specification and that has a mime-info element as its document root.

OPTIONS
       --mode mode
              mode can be user or system. In user mode the file is (un)installed for the current user only. In system
              mode the file is (un)installed for all users on the system. Usually only root is allowed to install in
              system mode.

              The default is to use system mode when called by root and to use user mode when called by a non-root
              user.

       --novendor
              Normally, xdg-mime checks to ensure that the mimetypes-file to be installed has a proper vendor prefix.
              This option can be used to disable that check.

              A vendor prefix consists of alpha characters ([a-zA-Z]) and is terminated with a dash ("-"). Companies
              and organizations are encouraged to use a word or phrase, preferably the organizations name, for which
              they hold a trademark as their vendor prefix. The purpose of the vendor prefix is to prevent name
              conflicts.

       --help Show command synopsis.

       --manual
              Show this manualpage.

       --version
              Show the xdg-utils version information.

ENVIRONMENT VARIABLES
       xdg-mime honours the following environment variables:

       XDG_UTILS_DEBUG_LEVEL
              Setting this environment variable to a non-zero numerical value makes xdg-mime do more verbose reporting
              on stderr. Setting a higher value increases the verbosity.

       XDG_UTILS_INSTALL_MODE
              This environment variable can be used by the user or administrator to override the installation mode.
              Valid values are user and system.

EXIT CODES
       An exit code of 0 indicates success while a non-zero exit code indicates failure. The following failure codes
       can be returned:

       1      Error in command line syntax.

       2      One of the files passed on the command line did not exist.

       3      A required tool could not be found.

       4      The action failed.

       5      No permission to read one of the files passed on the command line.

SEE ALSO
       xdg-icon-resource(1), xdg-desktop-menu(1)

EXAMPLES
       xdg-mime query filetype /tmp/foobar.png

       Prints the MIME type of the file /tmp/foobar.png, in this case image/png

       xdg-mime query default image/png

       Prints the .desktop filename of the application which is registered to open PNG files.

       xdg-mime install shinythings-shiny.xml

       Adds a file type description for "shiny"-files. "shinythings-" is used as the vendor prefix. The file type
       description could look as folows.

       shinythings-shiny.xml:

       <?xml version="1.0"?>
       <mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
         <mime-type type="text/x-shiny">
           <comment>Shiny new file type</comment>
           <glob pattern="*.shiny"/>
           <glob pattern="*.shi"/>
         </mime-type>
       </mime-info>

       An icon for this new file type must also be installed, for example with:

       xdg-icon-resource install --context mimetypes --size 64 shiny-file-icon.png text-x-shiny


AUTHOR
       Kevin Krammer, Jeremy White.
       <kevin.krammerATgmx.at>
       <jwhiteATcodeweavers.com>



xdg-utils 1.0                     06/24/2007                       XDG-MIME(1)