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sed: working with multiple lines

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# 1  
Old 11-13-2007
Java sed: working with multiple lines
Got another sed question Smilie

My text block is
Quote:
10002,9:12/123456789
10002,10:1
10002,11:1
10004,9:12/123456789
10004,10:1
I need to do the following:
If (and only if) the line starting with 10002,11 is followed by a line starting with 10004,9 , insert the line 10003,9 between the 2

Thus, my output should be
Quote:
10002,9:12/123456789
10002,10:1
10002,11:1
10003,9
10004,9:12/123456789
10004,10:1
I tried
Quote:
sed '
/^10002,11/ {
N
/\n.*10004/ a\
10003,9:1
}'
but this gives me
Quote:
10002,9:12/123456789
10002,10:1
10002,11:1
10004,9:12/123456789
10003,9
10004,10:1
(the order is not as i wanted it)

What am I doing wrong?

Thanks once again!
# 2  
Old 11-13-2007
Code:
sed '/^10002,11/{N;s/\n10004,9/\
10003,9&/;}' filename

There is an escaped new line after the pattern "\n10004,9".

Code:
awk 'x&&/^10004,9/{$0=y RS$0}
{x=(/^10002,11/)?1:0}1' y="10003,9" filename

Use nawk or /usr/xpg4/bin/awk on Solaris.
# 3  
Old 11-14-2007
awk
Hi Guy,

You can use awk to realize it.
in:
Code:
10002,9:12/123456789
10002,10:1
10002,11:1
10004,9:12/123456789
10004,10:1 
10002,9:12/123456789
10002,10:2
10002,11:2
10004,9:12/123456789
10004,10:2

out:
Code:
10002,9:12/123456789
10002,10:1
10002,11:1
10003,9
10004,9:12/123456789
10004,10:1
10002,9:12/123456789
10002,10:2
10002,11:2
10003,9
10004,9:12/123456789
10004,10:2

code:
Code:
awk'
BEGIN { FS=":"}
{
if ($1=="10002,11")
var=$0
else if ($1=="10004,9")
{
	var=sprintf("%s\n10003,9\n%s",var,$0)
	print var
}
else
print
}' a

# 4  
Old 11-14-2007
Quote:
Originally Posted by radoulov
Code:
sed '/^10002,11/{N;s/\n10004,9/\
10003,9&/;}' filename

There is an escaped new line after the pattern "\n10004,9".
How silly!

thanks for the correct solution!
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