On 15 Dec 2011 at 11:26, Fred Cisin wrote:
In MS-DOS, . . .
PC-DOS 1.xx, as one of the appendices in the manual
included a
[somewhat oversimplified] description of the requirements for a
replacement CLI to use in place of
COMMAND.COM 30 years ago, they
explicitly made provision for replacing
COMMAND.COM with alternative
CLIs or even GUIs! Instead of doing exactly that, the replacements,
even those from MICROS~1, were all just layered on top of
COMMAND.COM
JP Software is still at it, having started with CLI replacements for
DOS (4DOS), WinNT (4NT) and OS/2 (4OS2). Their current offering for
Windows is called (more flashy) Take Command and is well worth
investigating, if you're like me and spend a lot of your time staring
at a command prompt.
--Chuck