glfer(1) on Linux
The text 4cc44f8adf18, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
spectrogram display and QRSS keyer
Flags it lists
-
--device -
--file -
--help -
--sample_rate -
--version -
-d -
-f -
-h -
-n -
-s -
-v