[CentOS] Real sh? Or other efficient shell for non-interactive scripts

[Joerg Schilling]

Stephen Harris <lists at spuddy.org> wrote:

> On Fri, Apr 24, 2015 at 10:38:25AM -0400, m.roth at 5-cent.us wrote:
> > Fascinating. As I'd been in Sun OS, and started doing admin work when it
> > became Solaris, I'd missed that bit. A question: did the license agreement
> > include payment, or was it just restrictive on distribution?
>
> In 1990, when I started using ksh88, it was totally commercial.  Binaries
> were $$$ and source was $$$$.  We bought the source and compiled it for
> SunOS, Ultrix and various SYSVr[23] machines (one machine was so old it
> didn't understand #! and so needed it placed as /bin/sh).

But around 1991 1992, the first Solaris-2.x (SunOS-5.1) came out and this 
included the Korn Shell for no additional costs.

Jörg

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