Open a file or URL in the user's preferred application.
Open the current directory in the default file explorer
xdg-open .
Open a URL in the default browser
xdg-open https://example.com
Open an image in the default image viewer
xdg-open path/to/image
Open a PDF in the default PDF viewer
xdg-open path/to/pdf
Display help
xdg-open --help