all: known_hosts authorized_keys
.PHONY: all

known_hosts: $(wildcard known_hosts.d/*)
	touch $@
	for f in $^; do \
	  echo "# from $$f:"; \
	  cat $$f; \
	done >> $@

authorized_keys: $(wildcard authorized_keys.d/*)
	touch $@
	for f in $^; do \
	  echo "# from $$f:"; \
	  cat $$f; \
	done >> $@