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From: KenUnix <ken.unix.guy@gmail.com>
Date: Sat, 4 Mar 2023 09:49:54 -0500
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Subject: [TUHS] Re: Unix v7 icheck dup problem
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Attached is the one I have been toying with. Ignore the 'v7' part I added.

Ken

On Sat, Mar 4, 2023 at 9:41=E2=80=AFAM Noel Chiappa <jnc@mercury.lcs.mit.ed=
u> wrote:

>     > From: Clem Cole wrote:
>
>     > It had more colorful name originally - fsck (pronounced as fisk BTW=
)
>     > was finished. I suspect the fcheck name was a USG idea.
>
> I dunno. I don't think we at MIT wold have gratuitously changed the name =
to
> 'fcheck'; I rather think that was its original name - and we pretty
> definitely got it from CMU. 'fsck' was definitely descended from 'fcheck'
> (below).
>
>
>     > From: Jonathan Gray
>
>     >> (are 'fsck' and 'fcheck' the same program?)
>
>     > https://www.tuhs.org/cgi-bin/utree.pl?file=3DV7addenda/fsck
>
> Having looked the the source to both, it's quite clear that 'fcheck' is a
> distant ancestor of 'fsck' (see below for thoughts on the connection(s)).
> The
> latter has been _very_ extensively modified, but there are still some
> traces
> of 'fcheck' left.
>
> A lot of the changes are to increase the portability, and also to come in=
to
> compliance with the latest 'C' (e.g. function prototypes); others are jus=
t
> to
> get rid of oddities in the original coding style. E.g.:
>
>   unsigned
>         dsize,
>         fmin,
>         fmax
>   ;
>
> Perfectly legal C, but nobody uses that style.
>
>
>     > From: Jonathan Gray
>
>     > fcheck is from Hal Pierson at Bell according to
>     > https://www.tuhs.org/Archive/Distributions/USDL/CB_Unix/readme.txt
>
> Hmm. "the major features that were added to UNIX by CB/UNIX ... Hal Perso=
n
> (or Pierson?) also rewrote the original check disk command into something
> that was useful by someone other than researchers."
>
> I poked around in CB/UNIX, and found 'check(1M)':
>
>
> https://www.tuhs.org/Archive/Distributions/USDL/CB_Unix/cbunix_man1_01.pd=
f
>
> (dated November 1979). Alas, the source isn't there, but it's clearly in
> the
> fheck/fsck family. (CB/UNIX also has chkold(1M), which looks to me like
> it's
> 'icheck'.)
>
> So now we have a question about the ancestry of 'check' and 'fcheck' - is
> one
> an ancestor of the other, and if so, which - or are they independent
> creations? Without the source, it's hard to be definitive, bur from the
> messages (as given in the manual), they do seem related.
>
> Clem's message of 3 Mar, 14:35 seems to indicate the the original was fro=
m
> CMU, authored by Ted Kowalski; he also:
>
>   https://wiki.tuhs.org/doku.php?id=3Danecdotes:clem_cole_student
>
> says "Ted Kowalski shows up for his OYOC year in the EE dept after his
> summer
> at Bell Labs ... He also brought his cool (but unfinished) program he had
> started to write originally at U Mich - fsck". So maybe the CB/UNIX
> 'check' is
> descended from a version that Ted left behind at Bell Labs?
>
> Is anyone in touch with Hal Pierson? He could surely clear up these
> questions.
>
>         Noel
>


--=20
End of line
JOB TERMINATED

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<div dir=3D"ltr"><div><br></div><div>Attached is the one I have been toying=
 with. Ignore the &#39;v7&#39; part I added.</div><div><br></div><div>Ken<b=
r></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmai=
l_attr">On Sat, Mar 4, 2023 at 9:41=E2=80=AFAM Noel Chiappa &lt;<a href=3D"=
mailto:jnc@mercury.lcs.mit.edu">jnc@mercury.lcs.mit.edu</a>&gt; wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left:1px solid rgb(204,204,204);padding-left:1ex">=C2=A0 =C2=A0 &gt; F=
rom: Clem Cole wrote:<br>
<br>
=C2=A0 =C2=A0 &gt; It had more colorful name originally - fsck (pronounced =
as fisk BTW)<br>
=C2=A0 =C2=A0 &gt; was finished. I suspect the fcheck name was a USG idea. =
<br>
<br>
I dunno. I don&#39;t think we at MIT wold have gratuitously changed the nam=
e to<br>
&#39;fcheck&#39;; I rather think that was its original name - and we pretty=
<br>
definitely got it from CMU. &#39;fsck&#39; was definitely descended from &#=
39;fcheck&#39;<br>
(below).<br>
<br>
<br>
=C2=A0 =C2=A0 &gt; From: Jonathan Gray<br>
<br>
=C2=A0 =C2=A0 &gt;&gt; (are &#39;fsck&#39; and &#39;fcheck&#39; the same pr=
ogram?)<br>
<br>
=C2=A0 =C2=A0 &gt; <a href=3D"https://www.tuhs.org/cgi-bin/utree.pl?file=3D=
V7addenda/fsck" rel=3D"noreferrer" target=3D"_blank">https://www.tuhs.org/c=
gi-bin/utree.pl?file=3DV7addenda/fsck</a><br>
<br>
Having looked the the source to both, it&#39;s quite clear that &#39;fcheck=
&#39; is a<br>
distant ancestor of &#39;fsck&#39; (see below for thoughts on the connectio=
n(s)). The<br>
latter has been _very_ extensively modified, but there are still some trace=
s<br>
of &#39;fcheck&#39; left.<br>
<br>
A lot of the changes are to increase the portability, and also to come into=
<br>
compliance with the latest &#39;C&#39; (e.g. function prototypes); others a=
re just to<br>
get rid of oddities in the original coding style. E.g.:<br>
<br>
=C2=A0 unsigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 dsize,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 fmin,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 fmax<br>
=C2=A0 ;<br>
<br>
Perfectly legal C, but nobody uses that style.<br>
<br>
<br>
=C2=A0 =C2=A0 &gt; From: Jonathan Gray<br>
<br>
=C2=A0 =C2=A0 &gt; fcheck is from Hal Pierson at Bell according to<br>
=C2=A0 =C2=A0 &gt; <a href=3D"https://www.tuhs.org/Archive/Distributions/US=
DL/CB_Unix/readme.txt" rel=3D"noreferrer" target=3D"_blank">https://www.tuh=
s.org/Archive/Distributions/USDL/CB_Unix/readme.txt</a><br>
<br>
Hmm. &quot;the major features that were added to UNIX by CB/UNIX ... Hal Pe=
rson<br>
(or Pierson?) also rewrote the original check disk command into something<b=
r>
that was useful by someone other than researchers.&quot;<br>
<br>
I poked around in CB/UNIX, and found &#39;check(1M)&#39;:<br>
<br>
=C2=A0 <a href=3D"https://www.tuhs.org/Archive/Distributions/USDL/CB_Unix/c=
bunix_man1_01.pdf" rel=3D"noreferrer" target=3D"_blank">https://www.tuhs.or=
g/Archive/Distributions/USDL/CB_Unix/cbunix_man1_01.pdf</a><br>
<br>
(dated November 1979). Alas, the source isn&#39;t there, but it&#39;s clear=
ly in the<br>
fheck/fsck family. (CB/UNIX also has chkold(1M), which looks to me like it&=
#39;s<br>
&#39;icheck&#39;.)<br>
<br>
So now we have a question about the ancestry of &#39;check&#39; and &#39;fc=
heck&#39; - is one<br>
an ancestor of the other, and if so, which - or are they independent<br>
creations? Without the source, it&#39;s hard to be definitive, bur from the=
<br>
messages (as given in the manual), they do seem related.<br>
<br>
Clem&#39;s message of 3 Mar, 14:35 seems to indicate the the original was f=
rom<br>
CMU, authored by Ted Kowalski; he also:<br>
<br>
=C2=A0 <a href=3D"https://wiki.tuhs.org/doku.php?id=3Danecdotes:clem_cole_s=
tudent" rel=3D"noreferrer" target=3D"_blank">https://wiki.tuhs.org/doku.php=
?id=3Danecdotes:clem_cole_student</a><br>
<br>
says &quot;Ted Kowalski shows up for his OYOC year in the EE dept after his=
 summer<br>
at Bell Labs ... He also brought his cool (but unfinished) program he had<b=
r>
started to write originally at U Mich - fsck&quot;. So maybe the CB/UNIX &#=
39;check&#39; is<br>
descended from a version that Ted left behind at Bell Labs?<br>
<br>
Is anyone in touch with Hal Pierson? He could surely clear up these questio=
ns.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Noel<br>
</blockquote></div><br clear=3D"all"><br><span class=3D"gmail_signature_pre=
fix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature"><div dir=3D"l=
tr"><div>End of line</div><div>JOB TERMINATED</div><div><br></div><div><br>=
</div></div></div>

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