The Command Line Helper I was imagining back in February 2005 was born on January 3rd, 2006: EveryGUI. It is a brand new application registered on SourceForge and its creator is Jeffrey Bakker.
I am really glad to see someone working on a project like this! I will try to get it up and running on my Ubuntu box during the next few days.
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[...] UPDATE 2006-01-05: A project like this was born: EveryGUI. gui, cli [...]