UNIX admin wrote:
Check SUSv3, 2.6.4 Arithmetic Expansion. I don't
think it matters who
invented it, as it is now a standard feature.
Yes, but not all UNIXes support it. Does Solaris?
Please refer to standards(5) manual page (on Solaris 10, preferably).
I would think the point to take from this lesson would be that one should
always write portable scripts.
Nope, that is not the point of the thread. The point is that there
exists a legitimate, not rare use-case which standards don't cover.
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