uniq.sed

Last change on this file was 599, checked in by bird, 18 years ago
GNU sed 4.1.5.
File size: 309 bytes

Line
1	h
2
3	:b
4	# On the last line, print and exit
5	$b
6	N
7	/^$.*$\n\1$/ {
8	# The two lines are identical. Undo the effect of
9	# the n command.
10	g
11	bb
12	}
13
14	# If the @code{N} command had added the last line, print and exit
15	$b
16
17	# The lines are different; print the first and go
18	# back working on the second.
19	P
20	D

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Line
1	h
2
3	:b
4	# On the last line, print and exit
5	$b
6	N
7	/^\(.*\)\n\1$/ {
8	# The two lines are identical. Undo the effect of
9	# the n command.
10	g
11	bb
12	}
13
14	# If the @code{N} command had added the last line, print and exit
15	$b
16
17	# The lines are different; print the first and go
18	# back working on the second.
19	P
20	D