lk/system/default_programs.md
2022-08-19 13:27:27 +02:00

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---
title: "Default Programs"
tags: [ "Documentation", "Defaults", "Mime Type" ]
---
Install the package `xdg-utils`.
In general, type these commands with `bash-completion`, and you'll see the right option.
## Ask
Ask what type of application opens an mkv file:
> xdg-mime query default video/mkv
Same with pdf:
> xdg-mime query default application/pdf
Ask what file-type `book.pdf` uses.
> xdg-mime query filetype *book.pdf*
## Set
Set the mime type of mp4 videos to mpv.
> xdg-mime default mpv.desktop video/mp4
You'll need to use the tab key a lot here, and remember many items start with `org`.
You can use an asterisk for everything in a category.
> xdg-mime default org.gnome.font-viewer.desktop font/\*
This often won't work as expected, because some fonts will have the type `application` rather than `font`.