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}

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

           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.

           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

           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
           application'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.

           Adds the file type descriptions provided in mimetypes-file to the
           desktop environment.  mimetypes-file must be a XML file that
           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.

       --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.

           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.

           Show command synopsis.

           Show this manual page.

           Show the xdg-utils version information.

       xdg-mime honours the following environment variables:

           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.

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

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

           Error in command line syntax.

       xdg-icon-resource(1), xdg-desktop-menu(1), Shared MIME database
       specification[1], MIME applications associations specification[2]

           xdg-mime query filetype /tmp/foobar.png

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

           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 follows.


           <?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"/>

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

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

       Kevin Krammer

       Jeremy White

       Copyright (C) 2006

        1. Shared MIME database specification

        2. MIME applications associations specification

xdg-utils 1.0                     05/21/2018                       XDG-MIME(1)
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