c2addrbook(1) on Linux
The text 4ec23f06f629, as Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody) shipped it. The page shows this text now.
Maintains a list of contacts and full details. (Much like Gnome Card)
Flags it lists
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--help -
--version