post_install() {
	if ! getent group proftpd &>/dev/null; then
		groupadd -r proftpd >& /dev/null
	fi
 	if ! getent passwd proftpd &>/dev/null; then
		useradd -r -d /var/lib/ftp -g proftpd -s /bin/false proftpd
		usermod -aG ftp proftpd
	fi

	chown proftpd:proftpd /var/lib/ftp
}

post_upgrade() {
	post_install $1
}

post_remove() {
	if getent passwd proftpd &>/dev/null; then
		userdel proftpd >/dev/null
	fi
	if getent group proftpd &>/dev/null; then
		groupdel proftpd >/dev/null
	fi
}