• open a file with associated application: xdg-open image.png

XDG (Cross-Desktop Group) Configuration:

• freedesktop.org: XDG Specifications
• ArchWiki: Desktop entries

• show GNOME configuration (registry) entries, starting from root: gconftool-2 -R /
• restart of GNOME panel: killall gnome-panel
• publish user dir templates: xdg-user-dirs-update

• /etc/xdg/user-dirs.default: adoption of users home directory templates
• ~/.config/user-dirs.dirs: users (current) home directory templates
• .hidden: hide all files listed in .hidden from file manager (Nautilus, Thunar) view
• ~/.local/share/applications: private desktop files
• /usr/share/applications: global desktop files

• ArchWiki: Xfce - Session

• exo-open <url>: frontend to the Xfce Preferred Applications framework, which can either be used to open a list of urls with the default URL handler or launch the preferred application for a certain category.¹⁾

• ~/.config/mimeapps.list: users (changed) MIME associations