[Info-vax] RMS intro

[bill]

On 1/2/2024 2:42 PM, Dan Cross wrote:
> In article <kvj3t3Fbk87U1 at mid.individual.net>,
> bill  <bill.gunshannon at gmail.com> wrote:
>> On 1/2/2024 12:41 PM, Dan Cross wrote:
>>> In article <umvlnj$2cmas$1 at dont-email.me>,
>>> Arne Vajhøj  <arne at vajhoej.dk> wrote:s.
>>>
>>>> And they have known about both concepts for a long
>>>> time. WSL1 concept goes back to 90's - Win32 API on
>>>> top of NT kernel and Win9x kernel.
>>>
>>> Not really, but the basic concept of emulating a system
>>> interface on another system goes much further back than
>>> that; e.g., PA1050 on TOPS-20, or the DTSS environment on
>>> Multics.
>>
>> And lets not forget The Software Tools Virtual Operating System
>> in 1980 that gave you a bunch of the Unix API on everything from
>> CP/M to Exec-8 on the Univac 1100 including all of the DEC systems
>> of the time.  :-)
> 
> Indeed!  Though that was more about a suite of useful
> functionality for source-level compatibility, more than running
> unmodified binaries on compatible machines.
> 

One of the big "selling" points for Unix was always source
compatibility.  In the early Linux days there were compatibility
compatibility libraries that were supposed to make Linux stuff
run on BSD.  I never had much luck with it and usually found it
easier to just recompile under BSD.

bill