rzxcheck(1) on Linux
The text c50f9518b32e, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it. The page shows this text now.
Check the signature in a ZX Spectrum RZX file
Flags it lists
-
--help -
--version -
-V -
-h