[Bug 1980] use updated ssh-copy-id

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1980

--- Comment #17 from Philip Hands <phil at hands.com> ---
Oh BTW, while looking for portability tips for old shells, I note that:

 
http://ftp.gnu.org/old-gnu/Manuals/autoconf-2.57/html_chapter/autoconf_10.html#SEC119

suggests that old BSD shells, such as Ultrix sh, choke on ${ :- }
which I presume means that they also fail with ${ := }, which I just
used.

That is a document from 2002 though, so hopefully it's OK to ignore
what was already old then?

For instance, that document recommends against $(...) too, which I'm
also using, so I presume we're not trying to support stone-age shells
(or did you just miss that in the earlier comments, and should I revert
to using `...` ?)

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