TUHS

tuhs@tuhs.org

6420 discussions

by Carl Lowenstein

> From: "Lange, David" <Extern.David.Lange(a)gedas.com> > To: "'tuhs(a)minnie.tuhs.org'" <tuhs(a)minnie.tuhs.org> > Subject: [TUHS] The ^ = | ? > > Greetings, > > I've been searching for some reference to the ^ symbol being the same a | in > Bourne shell. Does anyone remember seeing anything like this? I've searched > the early manpages to no avail. It's here in my printed copy of the 6th Edition Unix Programmer's Manual. Page entitled SH(I) Section DESCRIPTION Subsection Command lines. One or more commands separated by '|' or '^' constitute a chain of filters. . . . carl -- carl lowenstein marine physical lab u.c. san diego clowenst(a)ucsd.edu

22 years

The ^ = | ?

by Lange, David

Greetings, I've been searching for some reference to the ^ symbol being the same a | in Bourne shell. Does anyone remember seeing anything like this? I've searched the early manpages to no avail. Regards, D.

22 years

Re: [TUHS] The ^ = | ?

by John Holden

> I've been searching for some reference to the ^ symbol being the same a | Yes, pre Bourne shell, edition 6 and earlier used ^ for piped. Also chdir insteads of the shortened 'cd'

22 years

[pups] FreeBSD-4.7, p11-2.9, 2.11bsd

by M. Giegerich

I'm trying to run 2.11 BSD on the p11 emulator... The 2.11 BSD boot image I'm using is 211_on_rl2 (which works on sim, but without network sup- port). Before downloading 2.11_rp_unknown.gz that seems to work for sure with p11 (at least I found enough posts hinting at that), I would like to know if anybody has successfully used the 211_on_rl2 distro to boot 2.11 BSD on p11. My results so far are p11 boots (after FIGHTING with p11conf), recognizes the 4 rl and 5 rk disks and images and gives me a @-prompt. Telnetting to the defined ports won't do :-( Any hints anybody? -- M. Giegerich, mail: migieger(a)vsnl.com, phone: +91.(0)80.5530154

22 years

Re: [pups] The infamous 2.11BSD patch archive

by Steven M. Schultz

Hi - > From: David Evans <dfevans(a)bbcr.uwaterloo.ca> > What's up with the 2.11BSD patch archive? I assume that the version Both it and the mirror are up and running. There are quite a few netblocks that have portscanned/spammed/whatever me here (dialups and cablemodems for the most part) and they're listed in the packet filters so if you're seeing timeouts, etc connecting that's probably the reason. > in the Unix Archive is the original release and does not have these > patches applied. The mirror to which 2bsd.com referrs is gone and I Companies play the "musical domain name" everytime they have a re-organization (and, sigh, another one is in the works as I type). What was listed was probably a name from the last reorganization and of course it's very difficult to track down all the places that an old name was used. The mirror I maintain at work is: ftp://ftp.cato.gd-ais.com (for some time yet it will also respond to 'ftp.to.gd-es.com') There may be other sites that also mirror > don't want to pound on Steve's site if I don't have to. Any Others have done that - usually it's not too bad, especially if I'm asleep at the time :) > suggestions? Once I get the files I presume I'm just supposed to feed them > through patch in sequence (with the appropriate options, of course). Sequence is important because the patches are diffs against the last current version of a file. Each patch has rather good (if I do say so myself ;)) instructions and explainations of what was changed, how to apply, what to rebuild immediately (and what can be deferred until it is convenient). Have Fun! Steven Schultz sms(a)2bsd.com

22 years

[pups] The infamous 2.11BSD patch archive

by David Evans

This *must* be a FAQ, but I didn't find a real answer to it anywhere. What's up with the 2.11BSD patch archive? I assume that the version in the Unix Archive is the original release and does not have these patches applied. The mirror to which 2bsd.com referrs is gone and I don't want to pound on Steve's site if I don't have to. Any suggestions? Once I get the files I presume I'm just supposed to feed them through patch in sequence (with the appropriate options, of course). -- David Evans (NeXTMail/MIME OK) dfevans(a)bbcr.uwaterloo.ca Ph.D. Candidate, Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/ University of Waterloo "Default is the value selected by the composer Ontario, Canada overridden by your command." - Roland TR-707 Manual

22 years

[pups] PDP-11 happily booted

by David Evans

Yanked a SCSI disk and the penguin could manage dding the simh image on to it. The PDP-11 booted quite happily. -- David Evans (NeXTMail/MIME OK) dfevans(a)bbcr.uwaterloo.ca Ph.D. Candidate, Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/ University of Waterloo "Default is the value selected by the composer Ontario, Canada overridden by your command." - Roland TR-707 Manual

22 years

Re: [pups] Making a TK50 2.11BSD boot tape for an 11/73

by norman＠nose.cs.utoronto.ca

If all that is needed is to concatenate three files into a single tape file, with each new file aligned on a block boundary, isn't (for f in f1 f2 f3; do dd <$f conv=sync; done) >/dev/rmt0 sufficient? The only time I had to do anything like this, the target system was a MicroVAX; hence the tape had to have ISO labels, and the program to be booted a particular tape filename. I don't remember how I handled that; probably I used one of the several public-domain tape-label-writing programs. But that was a VAX; I would assume an 11/73 doesn't have so much enforced complexity in its firmware.

22 years

[pups] Making a TK50 2.11BSD boot tape for an 11/73

by David Evans

Howdy. I'd like to confirm that somebody has successfully made a TK50 boot tape for 2.11BSD using a TK50Z attached to some other Unix box. In my case it will likely have to be Linux, though IRIX might be doable. It *should* work, after all, but, well, you know. :) -- David Evans (NeXTMail/MIME OK) dfevans(a)bbcr.uwaterloo.ca Ph.D. Candidate, Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/ University of Waterloo "Default is the value selected by the composer Ontario, Canada overridden by your command." - Roland TR-707 Manual

22 years

Re: [TUHS] unsigned division in V7's C

by Wolfgang Helbig

Warren replies: >Not sure if: > >http://www.tuhs.org/Archive/PDP-11/Bug_Fixes/Net.v7bugs/0017 > >is a bug fix for this. And Dennis replies: >Does > http://www.cs.bell-labs.com/who/dmr/odd.html#muldiv >suffice to explain the behavior Thanks for the replies, but the bug I found is about unsigned int's and not long int's. The V7 C code simply the DIV instruction for unsigned division. The dividend is put in the low word of a register pair with the upper word cleared. When the divisor is >= 2^15, DIV interprets it as a negative integer and produces the result (N = 2^16): N - a/(N-b) instead of a/b, and a%(N-b) instead of a%b. This explains the bug I've sent yesterday. I is easily fixed, since when b >= N/2 and a < N, then a/b is either zero or one. And there is another bug when using DIV for unsigned integers: If b = 1 and a >= N/2, then a/b >= N/2, that is a signed overflow. With V7 on Bob Supniks simulator (2.10), I get 60000/1: 0, 60000%1: 60000 DIV did not change the dividend because of overflow. Again a fix is easy: With unsigned ints, don't use DIV to divide by one. In all other cases, DIV produces the correct unsigned results, if the dividend is less N, that is its high word is zero. I wonder why these bugs went unnoticed. Greetings Wolfgang

22 years

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