Using grep to pattern match a list of files

[Yohhan]

Hi,
I have a list of files kept inside a text file, each delimited by a new line. I want to be able to take grep, open the file contained on each line, and search it for a specific pattern.

ie: The text file I have (call it file.txt) looks something like this:
file1.dat
file2.dat
file3.dat
file4.dat
file5.dat

I want grep to do pattern matching on the file files inside, but not actually on file.txt itself. How can I do this?

Thanks ahead.

 

[Barnaby W. Füi]

doh, no code attachments here. oh well

while read filename
do
....grep somepattern "$filename"
done < file.txt

(.. is indentation)