| --- Log opened Wed Apr 15 00:00:19 2015 |
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| 02:42 | | * ToxicFrog releases another thing: github.com/toxicfrog/mkrescue |
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| 10:40 | | * TheWatcher eyes this code, hairpulls |
| 10:40 | <@Tamber> | Careful, you don't have a lot left after dealing with students, as it is. |
| 10:41 | <@TheWatcher> | No kidding |
| 11:09 | | * TheWatcher ponders this impossible case check |
| 11:11 | <@TheWatcher> | Now I have to decide between a sensible error message, an error message involving alien abductions, or a direct "IMPOSSIBRU!!" |
| 11:11 | < abudhabi> | Write one in Hebrew. |
| 11:12 | <@gnolam> | I think this is where HELP HELP I AM BEING HELD CAPTIVE AND FORCED TO WORK IN THE CODE MINES comes in. |
| 11:15 | <@TheWatcher> | ×¢×ר×, ×× × × ××צת ××¢××× ×××ר×ת ×©× ×§×××× |
| 11:15 | <@TheWatcher> | >.> |
| 11:16 | < abudhabi> | × ×¤×× |
| 11:30 | <@Tarinaky> | Display a cryptographic hash corresponding to the error message? |
| 11:31 | <&McMartin> | GURU MEDITATION 57D34F21 |
| 11:31 | <@Tarinaky> | include a Hash Table in the appendix of the manual. |
| 11:32 | <@Tarinaky> | Formatted for data entry via punch card. |
| 11:32 | <&McMartin> | You have literally reinvented error codes |
| 11:32 | <@Tarinaky> | Just tear them out and keep them in order. |
| 11:32 | <@Tarinaky> | McMartin: Damnit. I was trying to be obtuse :/ |
| 11:38 | <@gnolam> | Oh dear: https://www.youtube.com/watch?v=IUC2GD351EU |
| 11:47 | <@Tarinaky> | Ah poop. |
| 11:52 | <@Tarinaky> | Just when I think I'm getting a handle on the technical aspects of my job... I realise I am still utterly clueless. |
| 11:53 | <&McMartin> | The world is really big >_> |
| 11:53 | <@Tarinaky> | So I have (in GNU Octave) a vector with the real-valued samples of a sine wave. |
| 11:54 | <@Tarinaky> | Now, my understanding of the fft function up to now, was that when I transformed it into a DFT |
| 11:54 | <@Tarinaky> | The absolute value would correspond to the magnitude of the component fourier sines. |
| 11:54 | <@Tarinaky> | And the complex phase would somehow relate to the phase of the fourier sine. |
| 11:55 | <&McMartin> | This was literally my worst subfield in college. I'm going to be super-not-helpful here -_- |
| 11:55 | <@Tarinaky> | So I tried multiplying the DFT buckets by e^i pi/2 and then transforming it back to the time domain with an ifft. |
| 11:55 | <@Tarinaky> | And plotting the real-value time domain samples. |
| 11:55 | <@Tarinaky> | Which gives me... noise. |
| 11:56 | <@Tarinaky> | Noise on the order of e-16 |
| 11:56 | <@Tarinaky> | Now, if I plot the imaginary values of the ifft of my rotated DFT I get the original signal. |
| 11:57 | <@Tarinaky> | So... I'm clearly missing something here. |
| 11:58 | <@Tarinaky> | This... probably falls more under a math question than a code question, so appologies. |
| 12:17 | <&McMartin> | It's right in that middle zone, yeah |
| 12:46 | | * TheWatcher readsup, notes incorrect format for Guru Meditation there~ |
| 12:50 | <@TheWatcher> | (should be two 32 bit hex values separated by ., eg: #00000005.a3f10ed45 for a divide by zero exception in the task at the address in the second part) |
| 12:52 | <&McMartin> | Fair enough. I never had an Amiga` |
| 12:52 | <&McMartin> | But that's just extra demonstration that this is an old technique~ |
| 12:53 | <@TheWatcher> | Heh, quite |
| 12:54 | <&McMartin> | (Those values also used to be on the BSOD screen before Windows followed Apple and literally just made it a big :-( emoticon) |
| 12:55 | <&McMartin> | (But it would at least also give you the enum constant code for the first one |
| 12:55 | <@TheWatcher> | I used to be able to remember what all the 68k exception codes were back in the day, now I can only remember 3 (address error), 4 (illegal instruction), and 5 (zero divide). Probably because those're the ones I used to see the most often |
| 12:55 | <&McMartin> | Heh |
| 12:55 | <&McMartin> | Yeah, back in my kernel dev days I knew four or five STOP codes by heart |
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| 13:31 | <@Tarinaky> | Back. |
| 13:31 | <@Tarinaky> | So, yeah. |
| 13:31 | <@Tarinaky> | Anyone have any idea what I'm doing wrong with the dsp stuffs? |
| 13:31 | < kourbou> | DSP? |
| 13:33 | <@Tarinaky> | Digital signal processing. |
| 13:33 | < kourbou> | I have no idea what that even is xD |
| 13:33 | < kourbou> | Sorry. |
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| 13:39 | <&McMartin> | Hopefully someone will later, but yeah, as noted, DSP is quite possibly my weakest subfield in CS |
| 13:42 | <@Tarinaky> | I accidentally scared off Kourbou. |
| 13:42 | <@Tarinaky> | Sorry. |
| 13:59 | <@Wizard> | McMartin: Is it even CS and not more CE/EE? |
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| 14:02 | <&McMartin> | Berkeley had an EECS department, so basic DSP was part of the curriculum |
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| 15:17 | | * McMartin assembles an up-to-date resume, is reminded that he did indeed use Lisp professionally a couple times. |
| 15:17 | <&McMartin> | Once back when it was even relevant, and effectively served as the Python of its Age |
| 15:27 | | * ToxicFrog upreads |
| 15:28 | <&ToxicFrog> | I still remember the SCO UNIX kernel panic screen. |
| 15:28 | <&ToxicFrog> | Partly because I saw it for real a few times, and partly because we had an entry in our random screensaver rotation that mimicked it exactly. |
| 15:29 | <@TheWatcher> | snerk |
| 15:29 | <&ToxicFrog> | Which once triggered while I was fiddling with some ostensibly hot-swappable hardware! |
| 15:29 | <@TheWatcher> | >.< :D |
| 15:30 | <&ToxicFrog> | !!!!! |
| 15:30 | <&ToxicFrog> | And it had that mode because my dad wrote it |
| 15:30 | <&ToxicFrog> | https://github.com/danfuzz/xscreensaver/blob/master/hacks/bsod.c#L1074 |
| 15:31 | <@TheWatcher> | How much did you swear at him after that? ;) |
| 15:31 | <&ToxicFrog> | I didn't realize until now that he wrote it. |
| 15:31 | <&McMartin> | Based on the !!!!! I'm guessing this is a recent revelation |
| 15:31 | <@TheWatcher> | I see |
| 15:31 | <&ToxicFrog> | I thought it just came as part of the xscreensaver "bsod" mode. |
| 15:31 | <@TheWatcher> | Let me rephrase my question then |
| 15:31 | <&ToxicFrog> | I just went rummaging to see if I could find the source and found his name on it, hence the github link. |
| 15:31 | <@TheWatcher> | How much are you going to swear at him after that, now? ;) |
| 15:32 | <&McMartin> | Also the very server we had discussed earlier when discussing the names of machines |
| 15:34 | <&ToxicFrog> | TheWatcher: he's been dead for four years. |
| 15:34 | <&ToxicFrog> | McMartin: yep. Like I said, ancilla has been around for a while. When I was born -- and four about ten years after -- it was the only machine in the house. |
| 15:35 | <&ToxicFrog> | As a wee lad it had two serial terminals connected to it. It was pretty exciting when we upgraded to something with X support. |
| 15:37 | <@TheWatcher> | ToxicFrog: Oh, I'm sorry :( |
| 15:37 | <&ToxicFrog> | TheWatcher: cancer :( I miss him terribly, but it's nice to find these bits of code he left around the net. |
| 15:38 | <&ToxicFrog> | I've got a complete copy of his ~/Source directory, including the games he wrote for me as a kid, but he also did a lot of open-source work that I never really had much visibility of. |
| 15:41 | <&ToxicFrog> | (go back far enough and you can find contributions and ML posts with an address of hcr!ancilla!tom or scocan!ancilla!tom) |
| 15:42 | <&McMartin> | Man. |
| 15:43 | <&McMartin> | I guess my dad was more a mathematician and less a developer, though he did a goodly amount of development later on. That's about when he *stopped* hobby coding. |
| 15:43 | <@Tamber> | Mmm, bang paths... smells like... history. |
| 15:43 | <@Tamber> | :) |
| 15:43 | <&ToxicFrog> | (we received mail at HCR, and then dialed into it from home periodically; dad taught me how to use uucp to exchange mail so I could send him messages at work) |
| 15:43 | <&McMartin> | I do have all the old family work on CDs labeled "Archaeology". I wonder if the Local Starmap thing he spent so long refining actually runs right. |
| 15:44 | <&McMartin> | But despite the fact that he brought home three or four Lisp or near-Lisp systems, I don't recall him ever actually doing work with them at home. It was all just BASIC. |
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| 15:51 | <@Tarinaky> | Today in politics: http://ichef.bbci.co.uk/live-experience/cps/512/amz/vivo/live/images/2015/4/15/5 1d204c7-480d-453a-bddc-d28b897b2cff.jpg |
| 15:51 | <&ToxicFrog> | For recent stuff I just have a complete backup snapshot of ancilla before it was migrated to new hardware last year, which includes nested layers of backups from earlier upgrades |
| 15:51 | <@Tarinaky> | Second row from the bottom |
| 15:51 | <@Tarinaky> | On the rhs of the image. |
| 15:51 | <&ToxicFrog> | For much older stuff, I have 250MB of stuff from a CD, which itself contained a pile of floppy images |
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| 15:51 | <&ToxicFrog> | which were actually in some bastard SCO-specific variant of a sysV filesystem |
| 15:52 | <&ToxicFrog> | Somewhere I have a script that patches the images into something linux can mount. |
| 15:52 | <&ToxicFrog> | Tarinaky: what am I looking for other than "a blurry mess" |
| 15:53 | <&ToxicFrog> | Unless you mean the terrible photoshop job? |
| 15:53 | <@Tarinaky> | ToxicFrog: The seams from the really terrible- |
| 15:58 | <@Tarinaky> | https://twitter.com/kibooki/status/588300746715725825 |
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| 16:11 | <@Tamber> | "a blurry mess" about describes UKIP, I think. |
| 16:12 | <@Tamber> | It's "That bloke from the pub who gets drunk and blames everything wrong in his life on people with the wrong colour skin, or big noses and curly hair, who've actually made something of their life" as a political platform. |
| 16:14 | <@Tarinaky> | Yes, well. Personally I'm dreading the possibility of a Con/UKIP coalition. |
| 16:17 | <@Tamber> | Eeeg. Not sure if that's better or worse than a straight out ukip win. :/ |
| 16:17 | <@Tarinaky> | It's the same. |
| 16:24 | <@Tarinaky> | Referrendum on EU membership and ultimately Brexit. Which would be terribad. |
| 16:25 | <@Tamber> | Indeed. |
| 16:25 | <@Tarinaky> | Meanwhile, everyone's acting confused that the SNP are doing really well now the flagship crazy they've been pushing for for years is off the table. |
| 16:25 | <@Tarinaky> | SNP lost... and are polling better than ever. |
| 16:27 | <@Tarinaky> | A Confidence-And-Supply arrangement is way more likely than a UKIP/Con coalition |
| 16:31 | <@Tarinaky> | A labour/green/plaid confidence and supply would be likely were it not for the fact Trident is being used as a political football for this. |
| 16:31 | <@Tarinaky> | And the decision to renew can't be kicked into the long grass like it was during the 2010 Con/LD negotiations. |
| 16:32 | <@Tarinaky> | So I'm not really sure what could happen. |
| 16:56 | <&McMartin> | As someone unfamiliar with the particulars of UK parliamentary rules - what is "confidence and supply"? Confidence votes I'm aware of but this seems at best tangential. |
| 16:57 | <&McMartin> | ("This is #code", you say. "Particulars of voting and decision procedures are on-topic for code.") |
| 17:02 | <&ToxicFrog> | (They totally are~) |
| 17:02 | <@Tamber> | Tangentically related: https://freedom-to-tinker.com/blog/jeremyepstein/decertifying-the-worst-voting-m achine-in-the-us/ ;.; |
| 17:03 | <&McMartin> | (The lack of tilde was intentional!) |
| 17:03 | <&ToxicFrog> | (I mean, at work we have "#polyamory | discussion of static type systems and the ad serving infrastructure") |
| 17:04 | <&McMartin> | (That sounds more tenuous) |
| 17:05 | <&McMartin> | (I was being completely unironic, because it's of a piece with, eg, Byzantine Generals Problem) |
| 17:06 | <&McMartin> | Tamber: Dang |
| 17:06 | <@Tamber> | From the description of it, it sounds like they lifted some high-school kid's homework solution, and used it to try solve a Real Problem. |
| 17:06 | <&McMartin> | My opinions on electronic voting haven't changed much since Debra Bowen's keynote at Usenix Security 2008 |
| 17:07 | <&McMartin> | (Executive summary: "Solves accessibility problems; workflow should be a machine that prints ballots that are both human-readable and optically scannable") |
| 17:13 | <&ToxicFrog> | McMartin: what's the Byzantine Generals Problem? |
| 17:13 | <&ToxicFrog> | And hey, we also discuss graph theory sometimes! |
| 17:15 | <&McMartin> | The general case of what interactive consistency/cache coherence protocols are supposed to resolve |
| 17:15 | <@gnolam> | ToxicFrog: fault tolerance in distributed systems. |
| 17:16 | <&McMartin> | And particularly the case where the fault means different nodes see different things as the thing that's gone wrong. |
| 17:17 | <@gnolam> | A generalized version of the Two Generals problem where not only can the messengers get lost but the generals can be traitors as well. |
| 17:21 | <@Wizard> | When you find a script in the repo that's supposed to solve a problem you have http://i.imgur.com/odu5DiM.gif |
| 17:25 | <@Tamber> | ...and instead blows up your working copy, scrambles your data, and sends your credit-card number to nigeria. |
| 17:29 | <@gnolam> | Tamber: that is... WTFy |
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| 18:42 | <@Tamber> | http://www.devttys0.com/2015/04/what-the-ridiculous-fuck-d-link/ Oh wow. Wow. *golf-clap* "[T]heir patch to prevent an unauthenticated sprintf stack overflow includes a new unauthenticated sprintf stack overflow." |
| 18:43 | <&McMartin> | \o/ |
| 18:44 | <@Tamber> | Everything is terrible! |
| 18:45 | <@Tamber> | Particularly consumer Everythings. |
| 18:45 | <&McMartin> | Sometimes comsumer everythings were more solid than others, because you couldn't patch them so they actually got testing ;_.; |
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| 19:35 | <@PinkFreud> | and that is why i don't use d-link products |
| 19:36 | <@PinkFreud> | seriously... a number of years ago, one of their old APs had a buffer overflow in telnetd. if you telnetted to it and sent some amount of newlines, it'd lock up the device. |
| 19:36 | <@PinkFreud> | d-link's 'fix' for that bug? |
| 19:37 | <@PinkFreud> | ... they added a FAQ entry which said 'If you're doing this, STOP' |
| 19:37 | <@PinkFreud> | that was it. |
| 19:38 | <@Tamber> | delink. |
| 19:41 | <@Wizard> | Lol |
| 19:48 | < Meatyhandbag> | if you get your sister pregnant, the babies will be immune to hammers. |
| 19:50 | <@Tamber> | o.O |
| 19:52 | < Meatyhandbag> | Crack.com |
| 19:52 | < Meatyhandbag> | *Cracked.com |
| 19:55 | <@Wizard> | Meatyhandbag: I hope it's followed by "try it out at home!" |
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| 20:00 | <@PinkFreud> | hah, found it! |
| 20:00 | <@PinkFreud> | https://web.archive.org/web/20060321030338/http://support.dlink.com/faq/view.asp ?prod_id=1269&question=DI-604%20/%20DI-614+%20/%20DI-624%20/%20DI-754%20/%20DI-7 64%20/%20DI-774%20/%20DI-604E1%20/%20%20DI-614+revB%20/%20DI-624C%20/%20DI-774B |
| 20:00 | <@PinkFreud> | that faq entry seems to have disappeared from their live site :) |
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| 20:34 | <@Alek> | it has indeed. |
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| --- Log closed Thu Apr 16 00:00:35 2015 |