Joseph L. Casale wrote:

> if the text indented beneath it has "D:", then do the same and extract
> "SNAPSHOT ID" if and only if "E:" follows?

If the line counts are constant you could do the reverse:

grep -B 3 "\(E:\|D:\)" input.txt  | grep Shadow

Which would show the 3 lines above a line that has E:\ or D:\ and
then only display the lines with the word Shadow.

nate

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