# XDG-MIME(1) - man - phpman

[XDG-MIME(1)](https://www.chedong.com/phpMan.php/man/XDG-MIME/1/markdown)                                xdg-mime Manual                               [XDG-MIME(1)](https://www.chedong.com/phpMan.php/man/XDG-MIME/1/markdown)



## 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 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.

       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 _type_-_subtype_ must be installed with the
           **xdg-icon-resource** command in the _mimetypes_ context. For example the filetype
           application/vnd.oasis.opendocument.text requires an icon named
           application-vnd.oasis.opendocument.text to be installed (unless the file type recommends
           another icon name).

       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 manual page.

### --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)](https://www.chedong.com/phpMan.php/man/xdg-icon-resource/1/markdown), [**xdg-desktop-menu**(1)](https://www.chedong.com/phpMan.php/man/xdg-desktop-menu/1/markdown), **Shared** **MIME** **database** **specification**[1], **MIME**
       **applications** **associations** **specification**[2]

## 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 follows.

           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


## AUTHORS
### Kevin Krammer
           Author.

### Jeremy White
           Author.

## COPYRIGHT
       Copyright © 2006

## NOTES
        1. Shared MIME database specification
           <http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec/>

        2. MIME applications associations specification
           <http://www.freedesktop.org/wiki/Specifications/mime-apps-spec/>



xdg-utils 1.0                                08/22/2022                                  [XDG-MIME(1)](https://www.chedong.com/phpMan.php/man/XDG-MIME/1/markdown)