[unix-history] / usr / lib / learn / editor / L31.1a

#print
I hope you have been checking the effects of your
substitutions by using the 'p' command before and
after the changes.  This is so often desired that
you may type the 'p' on the same line, after the 's'
command.  Thus
  s/ab/cd/p
changes 'ab' to 'cd' and prints the line after the change.
In this directory there is a file named 'tree'.  Try changing
the fourth line, which now reads
   spruxx
to read
   spruce
and then rewrite the file, and type 'ready'.
#create Ref
pine
fir
hemlock
spruce
birch
beech
hickory
maple
#create tree
pine
fir
hemlock
spruxx
birch
beech
hickory
maple
#user
#cmp Ref tree
#log
#next
32.1a 10
31.2b 5
Commit	Line	Data
fd15fd37 BJ	1	#print
	2	I hope you have been checking the effects of your
	3	substitutions by using the 'p' command before and
	4	after the changes. This is so often desired that
	5	you may type the 'p' on the same line, after the 's'
	6	command. Thus
	7	s/ab/cd/p
	8	changes 'ab' to 'cd' and prints the line after the change.
	9	In this directory there is a file named 'tree'. Try changing
	10	the fourth line, which now reads
	11	spruxx
	12	to read
	13	spruce
	14	and then rewrite the file, and type 'ready'.
	15	#create Ref
	16	pine
	17	fir
	18	hemlock
	19	spruce
	20	birch
	21	beech
	22	hickory
	23	maple
	24	#create tree
	25	pine
	26	fir
	27	hemlock
	28	spruxx
	29	birch
	30	beech
	31	hickory
	32	maple
	33	#user
	34	#cmp Ref tree
	35	#log
	36	#next
	37	32.1a 10
	38	31.2b 5