url=https://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index-082944.html

port_getver() {	
	fetch \
	| grep -Eo db-[0-9.]+.tar.gz \
	| grep -Ev '(6.*|18.*)' \
	| sed 's/db-//;s/\.tar\.gz//'
}