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

Eckert, Doug doug.eckert at dowjones.com
Fri Apr 24 12:42:52 UTC 2015


It was the mid/late-90s, but I seem to recall Bourne being the default
shell, although sh/ksh/csh were all available with a typical install.

On Fri, Apr 24, 2015 at 8:32 AM, Scott Robbins <scottro at nyc.rr.com> wrote:

> On Fri, Apr 24, 2015 at 08:02:56AM -0400, mark wrote:
> > On 04/24/15 06:57, Pete Geenhuizen wrote:
> > >
> > >On 04/24/15 06:07, E.B. wrote:
> > >>I'm sure most people here know about Dash in Debian. Have there
> > >>been discussions about providing a more efficient shell in Centos
> > >>for use with heavily invoked non-interactive scripts?
> > >>
> > >>Are there other people who have experience in this and can
> > >>provide interesting guidance?
> > >>
> > >Why go to that extreme if you tell a script on line 1 which shell to
> run it
> > >will do so.
> > >#!/bin/dash
> > >or what ever shell you want it to run in.  I always do that to make
> sure that
> > >the script runs as expected, if you leave it out the script will run in
> > >whatever environment it currently is in.
> > >
> >
> > I'm confused here, too, and this has been bugging me for some time:
> > why sh, when almost 20 years ago, at places I've worked, production
> > shell scripts went from sh to ksh. It was only after I got into the
> > CentOS world in '09 that I saw all the sh scripts again.
>
> Wasn't Solaris, which for awhile at least, was probably the most popular
> Unix, using ksh by default?
>
>
> --
> Scott Robbins
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-- 

*Doug Eckert*
*Technical Architect*

*Global Business Technology*
*Dow Jones* | *A News Corporation Company*
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