[dba-Tech] Bash shell

[Jim Lawrence]

Hi John:

You are right. The Bash shell is not running like a VM but running through a translation layer. The Linux shell processes are run against a series of apps via the powershell. There is not a one to one correlation between Windows and Linux functionality. On Linux each Linux process is a single standalone entity which is multi-user, multi-tasking and can spawn many associated processes but by its design is separated from the kernel. If a Linux process, for some reason fails, it has no impact on core processes...most likely it is quietly aborted, all its memory allocation is cleared and it carries on as if nothing happened. 

The Windows desktop is self-contained stand-alone system. There is only one user and its multi-tasking is built on percentage of processes being used. Too many processes running at once or an attempt to run multi-users will result in a system panic and the famous blue-screen. For Windows part it now has been built much more stable or is much better at recovering from mini-crashes..I don't know which. Windows still does not have the ability to recover from a serious system error by completely cleaning up the affected and damaged processes and continuing on.      

Aside: Linux is so powerful because it can combine processes or even computers, thousands of computers and their processes, together as a single entity. China is now the owner of the most powerful super-computer, in the world. Its design is not particularly sophisticated. They just took thousands of Linux boxes and connected them together... If a competitor gets too close in matching processing power, few hundred more boxes and the challenger disappears in the rear-vision mirrors. In the future, I do not see ever bigger networks being created but computer clusters...much like all the big computer companies...I would like to see all this capability in all sizes of business, each a cluster, fully interdependent use of hardware and software. We are not there yet but very close. 

In conclusion, that is why I say that Windows, in its current form, is just a more advanced single user machine and that by design limits its capability, reliability and by nature, its security.    

Jim
    
----- Original Message -----
From: "John R Bartow" <jbartow at winhaven.net>
To: "Discussion of Hardware and Software issues" <dba-tech at databaseadvisors.com>
Sent: Thursday, August 11, 2016 4:19:43 PM
Subject: Re: [dba-Tech] Bash shell

The problem lies in the way MS implemented Linux. I think many of originally
thought it was just a VM inside Windows or maybe a subset of Linux commands
built in to Windows. It's basically cohabitating the same space and has full
access to the hardware and windows file structure. And the Linux does not
respect the security models that Windows does so a hacker could get into
Linux and enable a blacklisted app to run in Windows! It's pretty bad.

I think they're headed the way you imagine. Windows will be a GUI Shell for
Linux core. And after that the Mac diehards will accuse MS of copying them
;-)

-----Original Message-----
From: dba-Tech [mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of
Jim Lawrence
Sent: Thursday, August 11, 2016 5:31 PM
To: Discussion of Hardware and Software issues
Subject: Re: [dba-Tech] Bash shell

Hi John:

You have got to love it. The Linux security model runs entirely different
that than of Microsoft. Linux is by far, more secure. You would think if the
two combined it would be a big plus for the MS OS and both would become
better. Apparently not.

To my way of thinking, Microsoft has no alternative but to swap their root
OS for Linux. They would then have to strongest back-end and the prettiest
front-end. Apparently, just glueing on a Linux FE is a disaster...should we
have been surprised?

OTOH, I will continue to bolt on a useful Bash shell to all my Windows10
desktops until an update from the Mothership either fixes it or Borks it
all. ;-)

Jim

----- Original Message -----
From: "John R Bartow" <jbartow at winhaven.net>
To: "Discussion of Hardware and Software issues"
<dba-tech at databaseadvisors.com>
Sent: Thursday, August 11, 2016 1:40:31 PM
Subject: Re: [dba-Tech] Bash shell

Linux in Windows 10 has created a big security problem for Windows.
Apparently it was a poorly done implementation and leaves a number of
security feature built-in to Windows vulnerable from the Linux side.

-----Original Message-----
From: dba-Tech [mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of
Jim Lawrence
Sent: Thursday, August 11, 2016 2:10 PM
To: Discussion of Hardware and Software issues
Subject: [dba-Tech] Bash shell

Hi All:

If you have not already done so, here is a tutorial on how to install the
Bash shell on you Windows 10.

http://bit.ly/2aZZUmh

Jim
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