Discussion under this answer in Space Exploration SE links to items in NAIF; NASA Planetary Data System Navigation Node links for MacIntel_OSX_64bit
I'm looking at these two.
- spy: https://naif.jpl.nasa.gov/pub/naif/utilities/MacIntel_OSX_64bit/spy
- spy.ug: https://naif.jpl.nasa.gov/pub/naif/utilities/MacIntel_OSX_64bit/spy.ug
spy.ug is a readme-like text file that displays in my browser, but spy downloads what Finder tells me is a text document. However I won't view it with the TextEdit app because it gives me a warning about security. It also suggests I can open it with iTerm which I assume will go ahead and run it.
I've opened it with SublimeText2 and it seems to be binary, which probably means I'll never know what it does.
Question:
- How can I find out what's in this NASA JPL "Spy" command line program for macOS and what it does exactly in terms of security issues?
- How can I find out how safe it is?
Beginning of spy.ug:
Spy User's Guide
===========================================================================
Last revised on 2012 SEP 19 by N. J. Bachman.
Abstract
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Spy is a command-driven utility for validating, inspecting, and
analyzing SPK files.