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Date:      Wed, 17 Feb 1999 04:09:14 -0800
From:      Thomas Stephens <tas@stephens.org>
To:        Greg Black <gjb@comkey.com.au>
Cc:        Jim Pirzyk <Jim.Pirzyk@disney.com>, Thomas Stephens <tas@stephens.org>, freebsd-questions@FreeBSD.ORG
Subject:   Re: ksh93? 
Message-ID:  <199902171209.MAA23908@stephens.ml.org>
In-Reply-To: Your message of "Wed, 17 Feb 1999 09:36:50 %2B1000." <19990216233650.3679.qmail@alpha.comkey.com.au> 

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Greg Black wrote:
>> >Regarding the other options, I am aware of pdksh and bash, but both are
>> >somewhat non-standard (especially bash).
>
>I'm curious about this -- in what way is bash "non-standard"?

The differences between bash and the standard UNIX shell (the Korn
shell) are listed in the bash FAQ (ftp://ftp.cwru.edu/pub/bash/FAQ).

Essentially, bash is an enhanced replacement for the Bourne shell (the
old standard UNIX shell) and, like the current UNIX shell, is (or at
least aims to be) a superset of the POSIX 1003.2 standard.
Unfortinately, though many Korn-shell-like features are provided by
bash, they are sometimes different and incompatible.  bash also lacks
some language and other features of ksh-93 (though this can also be said
of pdksh, which is closer to ksh-88 than to ksh-93).

Thomas Stephens
tas@stephens.org


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