sed question

**AceAll** · 08-18-2010

Hey,

I would like to add a tag <here> </here> below the second occurrence of <bb> tag.

Code:

<aa> </aa>
<bb> </bb> -- 1st occurrence 

<cc> </cc> 

<bb>      </bb>   -- 2nd occurrence

 <here> </here>

<dd> </dd>

I tried this one, but in vain. Any idea?

Code:

sed -en '/<bb>/2' -e '/<bb>/a<here> </here>/' test

**Franklin52** · 08-19-2010

If awk is allowed:

Code:

awk '/<bb>/ && ++c==2 {$0=$0 RS "<here> </here>"}1' file

**AceAll** · 08-19-2010

Thanks for your update. If possible, please explain the awk command that you have used ...

**Franklin52** · 08-20-2010

Originally Posted by AceAll

Thanks for your update. If possible, please explain the awk command that you have used ...

Ok, here we go.

Code:

awk '/<bb>/ && ++c==2 {$0=$0 RS "<here> </here>"}1'

Explanation:

Code:

/<bb>/ && ++c==2

If a line contains <bb> increase the counter c. On the second match if the counter has the value of 2:

Code:

{$0=$0 RS "<here> </here>"}

add the new line behind the 2nd line with <bb>

Code:

Print the current line.

**AceAll** · 08-21-2010

Thanks Franklin52!!

**Kloschüssel** · 08-23-2010

Why not XSLT transform the document?