Mailinglist Archive: opensuse (963 mails)

[David Haller <dnh@xxxxxxxxxxxx>]

Hello,

On Sun, 24 Apr 2011, Doug wrote:
> On 04/24/2011 11:43 AM, Mike Coday wrote:

You're missing 'dash' here, the default /bin/sh on Debian and
decendant systems like Ubuntu, which acts a lot more like a Bourne
shell than a bash in POSIX mode.


> Bourne                 /bin/sh            sh
> Bourne Again           /bin/bash        bash
> C shell                /bin/csh           csh
> TC shell              /bin/tcsh         tcsh
> Korn shell          /bin/ksh           ksh
> Z shell                /bin/zsh           zsh

All these except the [t]c shell (and a real /bin/sh) are POSIX
compliant and should run /bin/sh scripts just fine. Nonetheless, it is
a serious bug writing stuff with #!/bin/sh that's not actually POSIX.

For reference to a "bourne" shell: use [d]ash. You'll be surprised.
It is NOT a POSIX shell, AFAIR.

> (Anything written for the Bourne shell will run in bash without
> modification, AFAIK.)

As per definition.

> One of these is almost surely what she's familiar with, and wouldn't
> have to learn
> anything new, and you can set the system so it always starts in one
> of those shells.
> (She will know how.)

As long as it's not csh, she'll be quite happy with bash, and you
_can_ set her shell to whatever she prefers (e.g. /bin/zsh).

HTH,
-dnh

-- 
"A priest is either a PFW on the ultimate support line, or a
fraud adept at offering bogus answers to difficult problems 
while holding lusers at bay with arcane ritual." -- Malcolm Ray
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