ref: 1c424b1b4d5931f2a4b87b6f0f75827bc53ff9d7
dir: /testdir/T.chem/
echo T.chem: test chem.awk
awk=${awk-../a.out}
oldawk=${oldawk-awk}
for i in lsd1.p penicil.p res.p
do
$awk -f chem.awk $i >foo1
$oldawk -f chem.awk $i >foo2
diff foo1 foo2 || echo "BAD: T.chem on $i"
done