[unix-history] / .ref-79029c32280d78322b4fb003d1cf99489dda7f1c / .ref-BSD-3 / usr / lib / learn / editor / L30.2a

#print
Changing a whole line with the 'c' command is a slow way
to work when you only want to change a few letters.  The 's' (substitute)
command changes the letters within a line.  For example, the command
  s/abc/def/
will change a line reading
  xxxabc
into one reading
  xxxdef
by replacing the string 'abc' with 'def'.  Try the following sequence which
alters the first line of the file 'test' within this directory:

ed test
1p
s/months/years/
1p
w
q
ready
#create Ref
Four score and seven years ago our
fathers brought forth ...
#create test
Four score and seven months ago our
fathers brought forth ...
#user
#cmp test Ref
#log
#next
30.2b 5
Commit	Line	Data
007f9fd0 BJ	1	#print
	2	Changing a whole line with the 'c' command is a slow way
	3	to work when you only want to change a few letters. The 's' (substitute)
	4	command changes the letters within a line. For example, the command
	5	s/abc/def/
	6	will change a line reading
	7	xxxabc
	8	into one reading
	9	xxxdef
	10	by replacing the string 'abc' with 'def'. Try the following sequence which
	11	alters the first line of the file 'test' within this directory:
	12
	13	ed test
	14	1p
	15	s/months/years/
	16	1p
	17	w
	18	q
	19	ready
	20	#create Ref
	21	Four score and seven years ago our
	22	fathers brought forth ...
	23	#create test
	24	Four score and seven months ago our
	25	fathers brought forth ...
	26	#user
	27	#cmp test Ref
	28	#log
	29	#next
	30	30.2b 5