So basically you are looking for foo=" and then want to take the next
characters that is then followed by " or the Quotes is only there for
the example. It that case you are looking for foo= and want the next
characters to then write to a data area. I don't think any generic
string command will do that. You will have to roll your own.

Looking for <string> where line contains foo="<string>"

STR=$(sed -n 's/foo="\(.*\)"/\1/p')

Sorry, I meant to include the filename:

STR=$(sed -n 's/foo="\(.*\)"/\1/p' < myStringfile)

The less-than sign is optional in this case.

That will put the value in STR within your shell script... but not sure
how you would get it into a data area.

Dennis Lovelady
"An autobiography usually reveals nothing bad about its writer except his
-- Franklin P. Jones

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