On Mon, 15 May 2017, Ryan Schmidt wrote: > I guess /opt is a standard UNIX directory, and macOS does install other > UNIX directories like /private and /usr as hidden, so it makes sense.
A semi-standard; it was first used on Solaris as I recall to install non-base-but-supported software (such as the Sun C compiler), and truly local stuff went into /usr/local. FreeBSD (and probably others) don't use /opt, but /usr/local. Penguin/OS seems to ram everything into /usr/bin... -- Dave Horsfall DTM (VK2KFU) "Those who don't understand security will suffer."