post_install() {
	echo -n "Adding aria2c user and group ..."
	# --no-create-home
	useradd aria2c -d /var/share/aria2c/ -U -s /bin/nologin && echo " done."
	passwd -l aria2c &>/dev/null

	install -d /var/share/aria2c/
	touch /var/share/aria2c/aria2c.log
	touch /var/share/aria2c/aria2c.session

	chmod 600 /etc/conf.d/aria2c.conf
	chown aria2c:aria2c /etc/conf.d/aria2c.conf
	chown aria2c:aria2c /etc/conf.d/aria2c-env.conf
	chown -R aria2c:aria2c /var/share/aria2c/

	echo "Now the aria2cd is installed, you may want to ..."
	echo "  1. check the config file for aria2cd at /etc/conf.d/aria2c.conf"
	echo "  2. get the downloaded files at /var/share/aria2c/"
}

post_remove() {
	echo -n -e "\nRemoving aria2c user/group..."
	userdel aria2c && echo " done."
	echo "Now the aria2cd was removed from your system,"
	echo "you may need to check the directory /var/share/aria2c/ by manual."
}