Getting started page suggests invalid option --with-libraries

[anarthal]

The UNIX getting started page (https://www.boost.org/doc/libs/1_73_0/more/getting_started/unix-variants.html), point 5.1, suggests that invoking b2 --with-libraries= should work, which is not true.

The page also suggests on point 5.2.4, in the note, to use output redirection to reduce verbosity, which could be replaced by options like -d0, which output errors, at least.