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Re: Which packages should I use?

On Thu, Jul 25, 2002 at 03:07:25PM +0200, Henning Riedel wrote:
> Well, why should an OS definitely need a shell?
> Thinking about embedded systems, what would a shell be needful except
> laying around in the memory? Take a look at an RTOS, they are called 
> operating systems too, but most don't have a shell, because an OS is just
> a piece of bundled code to manage the resources.

Embedded systems need a shell too. If they don't have any all we
have is a black box without input or output, which is completely pointless.

If you embed an OS into an industrial robot, for example, the shell
can be the part of the OS that moves the robot's arm.

> Or you might just have an
> GUI without a real shell. The GUI could be your application as well.

A shell is an OS component which interacts with the user. in UNIX context
we call shell the actual core of the command-line shell, but GUIs are valid
shells too.

Robert Millan

"5 years from now everyone will be running
free GNU on their 200 MIPS, 64M SPARCstation-5"

              Andrew S. Tanenbaum, 30 Jan 1992

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