Re: (sh/bash) How to check for a string matching -*?

Janis Papanagnou wrote:

This is especially interesting; I thought ksh88 was POSIX conformant,
but it did not support /!/. Had that been a later addition to POSIX?

The POSIX shell description was based on ksh88 but with some
modifications. Obviously the original ksh88 did not implement
those modifications, so it was not POSIX conformant. Systems that
use ksh88 as their POSIX shell had to modify it to be conformant.

Later versions of ksh88 added the "missing" POSIX features such
as ! and $((...)), but are still not conformant in some ways.
That's why /usr/xpg4/bin/sh and /bin/ksh are different binaries
in Solaris 10.

One difference that springs to mind is:

$ ksh -c 'echo $((010))'
10
$ sh -c 'echo $((010))'
8

--
Geoff Clare <netnews@xxxxxxxxxxxxx>

.

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