psk31lx(1) on Linux
The text 6b3c4e2c919c, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it. The page shows this text now.
a terminal based ncurses program for psk31
Flags it lists
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-h -
-l -
-q -
-t -
-v -
-x