usr/lib/learn/editor/L37.2a

#print
A range of line numbers can be used with the substitute
command as with the print command.  For example,

$-4,$s/cat/&s/p

will change "cat" into "cats" on the last five lines of
a file.  In this directory there is a file "cliche"
containing a number of instances of the word "dog"; change
the instances of "dog" in the first five lines to "dogs".
Then rewrite the file and type "ready".
#create Ref
dogs tired
sick as a dogs
dogs eared
wouldn't send a dogs out on a night like this
every dogs has his day
dog gone
#create cliche
dog tired
sick as a dog
dog eared
wouldn't send a dog out on a night like this
every dog has his day
dog gone
#user
#cmp cliche Ref
#log
#next
37.2b 5