[unix-history] / usr / lib / learn / editor / L38.2b

#print
In this directory there is a file "text"; whenever the
letters "cat" begin a line, change them to "mouse";  but
leave other instances of "cat" unaltered.  Do this on each line.
Then rewrite the file and type "ready".
#create Ref
mouse's paw
alley cat
mouse has nine lives
let the cat out of the bag
#create text
cat's paw
alley cat
cat has nine lives
let the cat out of the bag
#user
#cmp text Ref
#log
#next
39.1a 10
Commit	Line	Data
fd15fd37 BJ	1	#print
	2	In this directory there is a file "text"; whenever the
	3	letters "cat" begin a line, change them to "mouse"; but
	4	leave other instances of "cat" unaltered. Do this on each line.
	5	Then rewrite the file and type "ready".
	6	#create Ref
	7	mouse's paw
	8	alley cat
	9	mouse has nine lives
	10	let the cat out of the bag
	11	#create text
	12	cat's paw
	13	alley cat
	14	cat has nine lives
	15	let the cat out of the bag
	16	#user
	17	#cmp text Ref
	18	#log
	19	#next
	20	39.1a 10