how to pipe contents of large tar.gz file to STDOUT?

Question

I have a large.tar.gz file containing about 1 million files, out of which about 1/4 of them are html files, and I want to parse a few lines of each of the html

Answer 1

Use this with GNU tar to extract a tgz to stdout:

tar -xOzf large.tar.gz --wildcards '*.html' | grep ...

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-O, --to-stdout: extract files to standard output