Set default application for all available mimetype on linux

set-default.sh

#!/usr/bin/env bash

# Usage: set-default "app.desktop"

# see https://unix.stackexchange.com/a/361705/233294

set_default() {
	d=$1
	for m in $(grep MimeType "$d" | cut -d= -f2 | tr ";" " "); do
		echo xdg-mime default "$d" "$m"
		xdg-mime default "$d" "$m"
	done
}

if [[ -f "$(echo $XDG_DATA_HOME || "~/.local/share")/$1" ]]; then
	set_default "$(echo $XDG_DATA_HOME || "~/.local/share")/$1"
elif [[ -f "/usr/share/applications/$1" ]]; then
	set_default "/usr/share/applications/$1"
fi