post_install() {
	echo -n "Adding aria2 user and group ..."
	useradd aria2 -r -U -d /var/share/aria2/ -s /bin/nologin && echo " done."
	passwd -l aria2 &>/dev/null

	install -d /var/share/aria2/
	touch /var/share/aria2/aria2.log
	touch /var/share/aria2/aria2.session

	chmod 600 /etc/conf.d/aria2.conf
	chown aria2:aria2 /etc/conf.d/aria2.conf
	chown -R aria2:aria2 /var/share/aria2/

	echo "Now the aria2d is installed, you may want to ..."
	echo "  1. check the config file for aria2 at /etc/conf.d/aria2.conf"
	echo "  2. get the downloaded files at /var/share/aria2/"
}

post_remove() {
	echo -n -e "\nRemoving aria2 user/group..."
	userdel aria2 && echo " done."
	echo "Now the aria2d was removed from your system,"
	echo "you may need to check the directory /var/share/aria2/ by manual."
}