Reminds me of how in some old Unix system, /bin/true was a shell script.

...well, if it needs to just be a program that returns 0, that's a reasonable thing to do. An empty shell script returns 0.

Of course, since this was an old proprietary Unix system, the shell script had a giant header comment that said this is proprietary information and if you disclose this the lawyers will come at ya like a ton of bricks. ...never mind that this was a program that literally does nothing.