Make a unique filesystem path, without creating the file

[Marko Rauhamaa]

Steven D'Aprano <steve at pearwood.info>:

> On Tue, 23 Feb 2016 05:54 pm, Marko Rauhamaa wrote:
>> However, when you are generating signing or encryption keys, you
>> should use /dev/random.
>
> And that is where you repeat something which is rank superstition.

Can you find info to back that up. All I've seen so far is forceful
claims that's superstition ("These are not the droids you're looking
for"). Even the ssh-keygen man page has:

    The reseeding of the OpenSSL random generator is usually done from
    /dev/urandom. If the SSH_USE_STRONG_RNG environment vari‐ able is
    set to value other than 0 the OpenSSL random generator is reseeded
    from /dev/random.


Marko