TUHS

tuhs@tuhs.org

6420 discussions

by A. P. Garcia

2.11 BSD ported to a mips-based microcontroller: http://retrobsd.org/ http://olimex.wordpress.com/2012/04/04/unix-on-pic32-meet-retrobsd-for-duin…

12 years, 10 months

man.cat-v.org

by Norman Wilson

I ran across this web site, which conveniently hosts man pages for a number of bell labs operating systems. Does anyone have the man pages for 9th or 10th edition that you could please share? That's problematic. Neither the limited-release V8 tape, the even-more-limited V9 (I'm not sure there even was a single such release, maybe we just sent out a few snapshots), nor the never-really-sent-to-anyone 10th Edition system has ever, so far as I know, escaped its original restrictive licensing. That includes the manual pages as well as the software proper. 10/e is even tricker, because it was published as a book; the ordinary book copyright on the contents may apply. And since all that stuff is 20 years or more, and several corporate reorgs/splits/buyouts, in the past, it may be very hard to find anyone who will agree that the stuff is no longer of any commercial value (the software all long since outdated, the printed book long out of print). Warren and Dennis and I talked about this many years ago. As I recall, we concluded that if we could get at least one of AT&T, Lucent, or the then-believed-owner of the UNIX commercial intellectual property to say it was OK, the others would likely go along; Warren had at the time a good contact with the latter entity; but said entity was still settling down after a buyout, so it seemed wisest to wait a few months before pushing for anything more. Alas, said entity was Caldera, which had just bought up The Santa Cruz Operation. Before a few months had passed, they had rebranded themselves as The SCO Group and shifted their primary business from technology development to pursuing untenable legal claims. I've no idea where one would start these days even to find the Gordian knot, let alone to cut it. Norman Wilson Toronto ON (who wrote some of them there manual pages, and some of the software they describe too, all a long time ago in a hill atop a swamp far far away) Email secured by Check Point

12 years, 10 months

man.cat-v.org

by A. P. Garcia

12 years, 10 months

Understanding the /bin, /sbin, /usr/bin, /usr/sbin Split

by A. P. Garcia

http://www.osnews.com/story/25556/Understanding_the_bin_sbin_usr_bin_usr_sb…

12 years, 10 months

"Slow system call" and EINTR

by Dan Stromberg

I gather system calls can return EINTR only when they are "slow". True? What makes a system call "slow"? Is it the ability to block for a while? But I wouldn't think dup(2) would block, for example. (I -=Love=- *ix!)

12 years, 11 months

Re: [TUHS] why the leading under score added to function names?

by arnold＠skeeve.com

Hi All. This is interesting. It shows that (apparently) early on, assembler was viewed as the primary programming language. It also shows the consequences a small, apparently local decision can have: here we are 40+ years later and GCC on Windows is still preprending underscores to function names! In 15 minutes I helped the guy at work solve a problem he'd been working on for two days! Thanks everyone, Arnold > From: Brantley Coile <brantley(a)coraid.com> > To: Dave Horsfall <dave(a)horsfall.org> > Date: Mon, 20 Feb 2012 18:34:26 -0600 > Cc: The Eunuchs Hysterical Society <tuhs(a)tuhs.org> > Subject: Re: [TUHS] why the leading under score added to function names? > > correct. we could link to assembler code with _entry points and not i> worry about symbol collisions in the rest of the code. > > iPhone email > > On Feb 20, 2012, at 6:23 PM, "Dave Horsfall" <dave(a)horsfall.org> wrote: > > > On Mon, 20 Feb 2012, arnold(a)skeeve.com wrote: > > > > [...] > > > >> I'm pretty sure this dates back to PDP-11 days. I'm wondering "why?". > >> Why did the C compiler prepend an underscore to function names? > > > > Sure was the PDP-11 :-) I vaguely recall that it was to make sure that > > user functions did not conflict with predefined assembler functions, as > > that would be a pain to diagnose (much like having swap overlap root). > > > > -- Dave

12 years, 11 months

[Unix-jun72] Invitación a conectarnos en LinkedIn

by Sergio Pedraja

LinkedIn ------------ Me gustaría añadirte a mi red profesional en LinkedIn. -Sergio Sergio Pedraja IT Security Administrator / Information Security Manager en Savings Bank Santander y alrededores, España Confirma que conoces a Sergio Pedraja: https://www.linkedin.com/e/-p9hg1j-gyzit23b-16/isd/6035310103/YCHqBtRa/?hs=… -- Estás recibiendo invitaciones a conectar. Haz clic para darte de baja: http://www.linkedin.com/e/-p9hg1j-gyzit23b-16/pQvcBySBaffs0LLhMMtx8DQb3x_CT… (c) 2012 LinkedIn Corporation. 2029 Stierlin Ct, Mountain View, CA 94043, EE.UU.

12 years, 11 months

Invitación a conectarnos en LinkedIn

by Sergio Pedraja

LinkedIn ------------ Me gustaría añadirte a mi red profesional en LinkedIn. -Sergio Sergio Pedraja IT Security Administrator / Information Security Manager en Savings Bank Santander y alrededores, España Confirma que conoces a Sergio Pedraja: https://www.linkedin.com/e/-amg4ei-gyzit20d-4/isd/6035310080/f1t_FAOT/?hs=f… -- Estás recibiendo invitaciones a conectar. Haz clic para darte de baja: http://www.linkedin.com/e/-amg4ei-gyzit20d-4/IES2kw2WbAK2tgMLcf1q-MI/goo/tu… (c) 2012 LinkedIn Corporation. 2029 Stierlin Ct, Mountain View, CA 94043, EE.UU.

12 years, 11 months

Invitación a conectarnos en LinkedIn

by Sergio Pedraja

LinkedIn ------------ Me gustaría añadirte a mi red profesional en LinkedIn. -Sergio Sergio Pedraja IT Security Administrator / Information Security Manager en Savings Bank Santander y alrededores, España Confirma que conoces a Sergio Pedraja: https://www.linkedin.com/e/-9arw1o-gyzisxbk-15/isd/6035309375/9Ym-js9F/?hs=… -- Estás recibiendo invitaciones a conectar. Haz clic para darte de baja: http://www.linkedin.com/e/-9arw1o-gyzisxbk-15/_SZkCeK7HqzqROuy9YxIdtKYnud5R… (c) 2012 LinkedIn Corporation. 2029 Stierlin Ct, Mountain View, CA 94043, EE.UU.

12 years, 11 months

why the leading under score added to function names?

by arnold＠skeeve.com

Hi All. Recently at work I helped someone figure out that when working with ld, the name of a function "foo" gets turned into "_foo" by the compiler. (It took this old-timer 15 minutes to solve a problem he had been working on for two days!) I'm pretty sure this dates back to PDP-11 days. I'm wondering "why?". Why did the C compiler prepend an underscore to function names? Thanks, Arnold

12 years, 11 months

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