l36.2b

<B>Digital的Unix操作系统VAX 4.2源码</B>

#print
Now, in file 'pets', change the word 'dog' on the third line
into 'dogs'.  Then rewrite the file and type "ready".
#create Ref
cats
hamsters
dogs
gerbils
#create pets
cats
hamsters
dog
gerbils
#user
#cmp pets Ref
#log
#next
36.2c 5