[NCLUG] /etc/environment

[Alan Silverstein]

> Note that in today's modern shells I would recommend doing math
> directly in $((...)) expressions.

And other shell expansions, using $(...), rather than ``, which are
harder to read (in my opinion), and don't nest.  The addition of $() was
a great leap forward.  Example:

    foo="$(echo 'abc' $(wc -l bar))"

Dunno if the "" are necessary, but they don't hurt, might be needed in
some cases, and make it easier to read (again, in my opinion).

Alan Silverstein