Listing 2: Sample Makefile clip for DNS Maintenance

named.soa:	$(NAMED)
	get -e -s s.named.soa
	delta -y"Increment Serial Number to activate change" s.named.soa
	get -g -lp s.named.soa | head -1 > .m1
	prs -e -r`cat .m1` -d";:I:\t:P:\t:D:\t:C:" s.named.soa | grep "^;" > .m2
	get -s -p s.named.soa > .m4
	m4 -DDELTA=.m2 .m4 > named.soa
	chmod 444 named.soa
	rm .m1 .m2 .m3 .m4

