tonetool(1) on Linux
The text 6d7549712b3f, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.
create and manipulate telephony tones.
Flags it lists
-
-append -
-create -
-detect -
-list