Is there a command or a file which can be downloaded which contains a
index&summary of the Remote GEM library?

A local file copy of the index&summary of the remote GEM library would
allow me to perform keyword searches of
the summary line when I am looking for a specific gem or source code.
The command "gem list -rd" never generates
any output or completes.

I am looking for a report with the following fields:  gem_name,
gem_version, gem_summary

your assistance would be greatly appreciated.

John