Shell Programming and Scripting

if I have the following lines in a file app.log

some lines here

Code:

<AAAA>
abc
<id>123456789</id>
ddd
</AAAA>

some lines here too

Code:

<BBBB>
abc
<id>123456789</id>
ddd
</BBBB>

some lines here too

Code:

<AAAA>
xyz
<id>987654321</id>
ssss
</AAAA>

some lines here again...

How do I get the particular response that I am interested in by providing the id ?
like if I am interested in AAAA response for id 123456789 like below

Code:

<AAAA>
abc
<id>123456789</id>
ddd
</AAAA>

I might need some changes to the command that I am using. it gives me all AAAA responses, but I need to filter the response having the id 123456789

Code:

cat app.log | sed -n '/<AAAA/,/<\/AAAA>/p'

Thanks in advance.

Narayana.V

This may work, at least on your simplified samples:

Code:

awk '/<AAAA>/,/<\/AAAA>/ {X=X"\n"$0} /<\/AAAA>/ && X ~ /123456789/ {print X; X=""}' file

<AAAA>
abc
<id>123456789</id>
ddd
</AAAA>

Rudic - It is giving me all AAAA responses

Then your sample file may not be representative.

X should be cleared at the end of every block

Code:

awk '/<AAAA>/,/<\/AAAA>/{X=X"\n"$0}
/<\/AAAA>/ {if (X~/123456789/) print X; X=""}' file

Thanks MadeinGermany, It is working perfect.