issndfile(1nas) on Linux
The text 3b7ff9429ea8, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
checks if a file is in a recognized audio file format