smdiag(8) on Linux
The text b0e7315aea28, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it. The page shows this text now.
Linux soundcard packet radio modem driver diagnostics utility
Flags it lists
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-c -
-d -
-e -
-h -
-i