addenv
	env = $target^.env
	tmp = $env.${pid}
	echo $var^' = '^$"value >> $target^.env
	uniq $env > $tmp
	mv $tmp $env
	adddep $target $target^.env

rmenv
	env = $target^.env
	tmp = $env.${pid}
	grep -v '^'^$var^' ' $env > $tmp
	mv $tmp $env