Date: Sat, 26 Jan 2019 16:50:58 -0800 From: Cy Schubert <Cy.Schubert@cschubert.com> To: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net> Cc: "Simon J. Gerraty" <sjg@juniper.net>, Cy Schubert <Cy.Schubert@cschubert.com>, arch@freebsd.org, Baptiste Daroussin <bapt@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: Importing mksh in base Message-ID: <201901270050.x0R0owQx087680@slippy.cwsent.com> In-Reply-To: Message from "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net> of "Sat, 26 Jan 2019 16:19:51 -0800." <201901270019.x0R0JpF4096103@pdx.rh.CN85.dnsmgr.net>
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In message <201901270019.x0R0JpF4096103@pdx.rh.CN85.dnsmgr.net>, "Rodney W. Gri mes" writes: > > Cy Schubert <Cy.Schubert@cschubert.com> wrote: > > > Interactively ksh93's command completion listing looks unconventional > > > but it functions the same. > > > > > > However programmatically it's the standard. Large commercial vendors, > > > like Oracle, still require ksh for its array handling among other > > > things. > > > > pdksh (hence I assume mksh) has had array support for ages. > > The only thing I ever found it useful for was cd history, > > and I actually have an implementation of that for sh that does not need > > arrays. > > > > > It has that advantage. For embedded this is an advantage. However if > > > embedded is using ksh as a scripting language mksh and pdksh aren't > > > > As noted earlier I've used [pd]ksh as shell for 30 years. > > I do *not* write ksh scripts (except for .kshrc etc ;-) > > > > The beauty of ksh as interactive shell is it's (mostly) compatability > > with /bin/sh - which scripts should be written in. > > > > Now on some systems (HPUX springs to mind ;-) /bin/sh is so bad that > > one has to use ksh to run scripts - but they are still sh scripts. > > Doesnt pdksh have a "sh" compatible mode iirc when you > invoke it via a path of sh it behaves as a traditional > bourne shell, also if IIRC Openbsd is doing just that, > /bin/sh -> /bin/pdksh (hard link) IIRC ksh had an option that allowed it to be built as /bin/sh but I can't find the option any more. Maybe I was mistaken. The current ksh93 in ksh93-devel has bash support though. -- Cheers, Cy Schubert <Cy.Schubert@cschubert.com> FreeBSD UNIX: <cy@FreeBSD.org> Web: http://www.FreeBSD.org The need of the many outweighs the greed of the few.
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