retroarch-standalone-service/readme.install

post_install() {
	getent group kodi > /dev/null || groupadd -g 420 kodi
	if ! getent passwd kodi > /dev/null; then
		useradd -c 'kodi user' -u 420 -g kodi -G audio,video,network,optical \
			-d /var/lib/kodi -s /usr/bin/nologin kodi
		passwd -l kodi > /dev/null
		[[ ! -d /var/lib/kodi/.kodi ]] &&
			mkdir /var/lib/kodi/.kodi &&
			chown -R kodi:kodi /var/lib/kodi/.kodi
	fi
}

post_upgrade() {
	post_install $1
	if ! getent group kodi | cut -d: -f3 | grep 420 > /dev/null 2>&1; then
		groupmod -g 420 kodi > /dev/null 2>&1
	fi
	if ! id -u kodi | grep 420 > /dev/null 2>&1; then
		usermod -u 420 kodi > /dev/null 2>&1
		if [[ $? -ne 0 ]]; then
			echo "Changing uid of user kodi failed."
			echo "It is recommended that the uid is changed."
			echo "Stop all processes running under the kodi user and reinstall kodi"
			echo "or change the uid manually. (usermod -u 420 kodi)"
		fi
		chown -R kodi:kodi /var/lib/kodi
	fi

	if [[ -d /var/lib/xbmc ]]; then
		echo "If you are upgrading from xbmc->kodi and wish to keep your"
		echo "settings, simply follow these steps after the install:"
		echo 
		echo "cp -a /var/lib/xbmc/.xbmc/* /var/lib/kodi/.kodi"
		echo "chown -R kodi:kodi /var/lib/kodi"
	fi
	
	if [ "$(vercmp $2 1.8-1)" -lt 1 ]; then
		if [[ -f /etc/X11/Xwrapper.config ]]; then
			echo '-> It is no longer necessary to keep /etc/X11/Xwrapper.config for kodi to start properly.'
		fi
	else
		/bin/true
	fi
}

post_remove() {
	getent passwd kodi > /dev/null 2>&1 && userdel kodi
	getent group kodi > /dev/null 2>&1 && groupdel kodi
}

pre_install() {
	/usr/bin/systemctl status xbmc.service &>/dev/null
	if [[ $? -eq 0 ]]; then
		# xbmc is running via this service
		/usr/bin/systemctl stop xbmc.service &>/dev/null
	else
		/bin/true
	fi
}