how to use sed with awk 1

[liondari]

Hello everybody!
I have two files (sd.data and sdisk.cpp).
I would like to extract some information out of sd.data.
For example the product of the two numbers after the word initUcell:

initUcell 10 10
stepLimit 20000
..
..

Then I would like to substitute the result (in this case 100) into some regexp which occurs in file sdisk.cpp.

How can I use awk, sed or a combination within a script to achieve this?
Thank you for your help!
Kind regards!

 

[PHV]

Something like this ?
Ucell=`awk '/^initUcell /{printf "%d",$2*$3}' sd.data`
sed "s!some regexp!${Ucell}!g" sdisk.cpp > newsdisk.cpp

Hope This Helps, PH.
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