[TUHS] The evolution of Unix facilities and architecture

[Warner Losh]

On Thu, May 11, 2017 at 10:15 AM, Clem Cole <clemc at ccc.com> wrote:
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> On Thu, May 11, 2017 at 10:07 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu>
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>>     > From: Clem Cole
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>>     > it was was originally written for the for the 6th edition FS (which
>> I
>>     > hope I have still have the sources in my files) ...
>>     > I believe Noel recovered a copy in his files recently.
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>> Well, I have _something_. It's called 'fcheck', not 'fsck', but it looks
>> like
>> what we're talking about - maybe it was originally named, or renamed, to
>> be in
>> the same series as {d,i,n}check? But it does have the upper-case error
>> messages... :-) Anyway, here it is:
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>>   http://ana-3.lcs.mit.edu/~jnc/tech/unix/s1/fcheck.c
>>   http://ana-3.lcs.mit.edu/~jnc/tech/unix/man8/fcheck.8
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> fcheck ---> aka fsick  -- aka fsck -- that's it.

There's a dcheck.c in the TUHS v7 sources. How's that related?

Warner


>> Interestingly, the man page for it makes reference to a 'check' command,
>> which
>> I didn't recall at all; here it is:
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>>   http://ana-3.lcs.mit.edu/~jnc/tech/unix/s1/check.c
>>   http://ana-3.lcs.mit.edu/~jnc/tech/unix/man8/check.8
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>> for those who are interested.
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>>     > Noel has pointed out that MIT had it in the late 1970s also,
>> probably
>>     > brought back from BTL by one of their summer students.
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>> I think most of the Unix stuff we got from Bell (e.g. the OS, which is
>> clearly
>> PWB1, not V6) came from someone who was in a Scout unit there in high
>> school,
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> Jon Stienhart maybe???   He & Paul Rubinfield were in that scout group years
> ago and were both long time UNIX hackers, but I've forgotten where Stienhart
> did his undergrad.
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>> of all bizarre connections! ISTR this came the same way, but maybe I'm
>> wrong.
>> It definitely arrived later than the OS - we'd be using icheck/dcheck for
>> quite a while before it arrived - so maybe it was another channel?
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> This is Ted's code and my error messages.
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>> The only thing that for sure (that I recall) that didn't come this way was
>> Emacs. Since the author had been a grad student in our group at MIT, I
>> think
>> you all can guess how we got that!
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>>         Noel
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> Clem
>