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--- doc:appunti:linux:tux:xfce [2020/11/01 16:59] – [Applet utili] niccolo
+++ doc:appunti:linux:tux:xfce [2020/11/02 07:34] – [User environment] niccolo
@@ Line 5: / Line 5: @@
 ===== User environment =====
-If you want to set **aliases** or environment **variables** you have to rely on **rc files** of your shell program; e.g. for the **bash** you can edit **$HOME/.bash_aliases** or just the **$HOME/.bashrc**. Notice that the terminal emulator is not genearally executed as a login shell, to the files contained into **/etc/profile.d/** directory are not executed (they are instead executed when logging remotely via ssh).
+If you want to set **aliases** or **environment variables** you have to rely on the **rc files** of your shell program; e.g. for the **bash** you can edit **$HOME/.bash_aliases** or just the **$HOME/.bashrc**. Notice that the terminal emulator is not generally executed as a login shell, so the files contained into **/etc/profile.d/** directory are not sourced (they are instead executed when logging remotely via ssh).
+Some terminal emulator have their own procedure to set environment variables, e.g. the **konsole** program has the **Settings** => **Edit Current Profile...** => **General** => Environment **Edit...**.
+===== Default MIME Applications =====
+Debian uses the **[[https://www.freedesktop.org/wiki/Software/xdg-utils/|XDG system]]** (desktop integration utilities from freedesktop.org) to know what application is associated to a specific MIME Type. So the XFCE file manager **Thunar** (but also textual managers like the **Midnight Commander**) can be configured centrally to suit your preferences.
+Let's take the **image/jpeg** MIME Type: per default it is associated to the ImageMagick viewer:
+<code>
+xdg-mime query default image/jpeg
+display-im6.q16.desktop
+</code>
+Soppose we want to associate it to the **Geeqie** program instead, for the current user only (not a system-wide preference) we can do the following.
+  - Verify that the **Geeqie package** installed its Desktop file **/usr/share/applications/geeqie.desktop**.
+  - Create the user's applications directory **$HOME/.local/share/applications/** and copy the **geeqie.desktop** file into it.
+  - Update the user's mime database configuration file with the command **update-desktop-database $HOME/.local/share/applications/**
+Now you can verify that the MIME Type is correctly associated:
+<code>
+xdg-mime query default image/jpeg
+geeqie.desktop
+</code>
+From now on, every XDG compliant program will use Geeqie to open an JPEG image.
 ===== Applet utili =====