Wikipedia:Reference desk/Archives/Computing/2013 April 9
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- 1 April 9
- 1.1 Does mining for bitcoins count as a server?
- 1.2 Word 2007 - Headers & Footers
- 1.3 Router: current UK pronunciations?
- 1.4 Compatibility of add-ons/extensions/plug-ins across browsers
- 1.5 external HD SMART results
- 1.6 Phone
- 1.7 Windows v. Unix Copy
- 1.8 Free software to upscale images in bulk?
- 1.9 golden ax
Does mining for bitcoins count as a server?
I am interested in joining a pooled group of users to mine for bitcoins with a secondary computer that I would like to set aside solely for this purpose. I am on a US university campus internet system. Our policy states that we are not allowed to connect a server to the school internet system (to prevent bandwidth hogging I'm assuming). Does mining for bitcoins count as using my computer as a server? Does it hog large amounts of internet bandwidth relative to using a computer for more "normal" usages? Acceptable (talk) 00:14, 9 April 2013 (UTC)
- You're basically trying to use the university's facilities for a private moneymaking (literally!) enterprise, and I don't think we ought to advise you on the legalities of that. Looie496 (talk) 03:50, 9 April 2013 (UTC)
- That's not the question the OP is asking though; it is a technical one, not a legal one. Even in terms of "legalities," this is less a matter of the law per se than it is the university's IT policies. (There is no law against making money at university; there are sometimes internal policies regulating it.) --Mr.98 (talk) 13:04, 9 April 2013 (UTC)
- My understanding of Bitcoin pooling is not great, but from what I can tell, it seems to involve:
- Downloading a little bit of information
- Processing that information
- Uploading a little bit of information when you're done
- If the above is true, then none of that ought to use very much bandwidth, and none of which ought to count as a being a server. And today, "normal" usage means things like streaming movies or music, which take huge amounts of bandwidth by comparison. But if you are really concerned about violating your university IT policies you should contact them. --Mr.98 (talk) 13:04, 9 April 2013 (UTC)
- "Server" is a bit og a loose term in IT today. However barring any clear indications otherwise I would interpret it to mean a machine or process that waits for and acts on "requests" that originates "elsewhere". Mining for bitcoins will not match that definition if you are just operation alone. If you are part of a mining pool then it depens a bit more on how the programs are set up, but in that case it's quite possible that you will be running a server. Taemyr (talk) 12:29, 10 April 2013 (UTC)
I have a document for translation, and the original has headers and footers on each page, which also need to be translated. Normally, this would not be a problem, but it appears that on the first page only, there is a title above the header. This title is not part of the header, nor does this title appear on any other page. How is it possible for me to add this title in above the header, and only on this one page, so that when I move onto the second page, the header for the second page will be at the top, with nothing above it? KägeTorä - (影虎) (TALK) 08:11, 9 April 2013 (UTC)
- You can have a unique header for the first page only (demo). So on that first page, you'd duplicate the normal header, and then add in the additional matter at the top of the header. -- Finlay McWalterჷTalk 08:29, 9 April 2013 (UTC)
Router: current UK pronunciations?
Hi folks. I'm retired from editing WP, and am here as a consumer. Posting at the computing desk rather than the language desk because I want accurate answers from real UK speakers of computer jargon, not from "official" sources.
How is "router" (the computer term, not the woodworking term with the different etymology) pronounced in the UK? I had assumed that it would rhyme with "doubter" (as in the US, and here in Australia), not with "looter"; but I have checked several British dictionaries, and they want it to rhyme with "looter".
So, actual UK geeks: how do you say it? (₰?) Many thanks.
NoeticaTea? 11:21, 9 April 2013 (UTC)
- In this episode of Channel 5's The Gadget Show, Jason Bradbury and Ortis Deley both pronounce it like "looter". -- Finlay McWalterჷTalk 11:33, 9 April 2013 (UTC)
- In the episode of the BBC's Click from the 30th of March (it's off iPlayer, but you'll find it on YouTube), reporter Dan Simmons says it like "looter" too (2 minutes 40 in). -- Finlay McWalterჷTalk 11:39, 9 April 2013 (UTC)
- Yup, it's a 'Rooter' - which helps us distinguish it from a 'Rowter', or, as Handy Andy would say, a raah'er. - Cucumber Mike (talk) 12:35, 9 April 2013 (UTC)
- As in Route 66, for example. AndrewWTaylor (talk) 18:51, 9 April 2013 (UTC)
I am grateful for the information, guys. Seems the dictionaries have it right. In Australia we are generally aware of British and American differences, and of where our own pronunciation and vocabulary choices fit on the linguistic map. But there are exceptions. Here's what I think now: Normally, we would follow the British norm for such a word. We, like the Brits, say "root" for the well-established word "route", of course. But the computer term "router" is a newcomer, and we take advantage of its general Americanness and its novelty to avoid an awkward echo of "root" meaning "fuck" (both noun and verb). That is very coarse old Australian; so we prefer the American pronunciation almost exclusively. On the other hand, this would not explain our pronunciation of "cache" the American way: "caysh", not "cash" or "cahsh". Hmmm.
NoeticaTea? 09:30, 10 April 2013 (UTC)
- Not really following this last. I have never heard any pronunciation other than "cash" in the States (I guess you mean /kæʃ/ for "cash"). What you mean by "caysh" I'm not really sure; could be either /kaɪʃ/ or /keɪʃ/, but in either case it would sound very odd to Americans as a pronunciation of "cache". --Trovatore (talk) 01:09, 11 April 2013 (UTC)
- Thanks, Trovatore. A few points: As I say, I posted here and not at the language desk because I want actual usage from computer specialists (and incidentally, because I have retired from editing and want to stay away from my usual haunts). I avoided IPA, for the convenience of non-linguists. By the naive form "caysh" I intend /keɪʃ/, of course. No native speaker without linguistics exposure is likely to take it as /kaɪʃ/, especially since I also used the crass naive form "cahsh" nearby. Now, I was mistaken about the dominant US pronunciation, which prompted by you I have since checked. I knew that British usage avoids /keɪʃ/ (OED: "/kæʃ/, formerly also /kɑːʃ/"; other sources agree). But I did not know that /keɪʃ/ was mostly confined to Australia. I don't know where we got it! I remember my own surprise, decades ago, being "corrected" by a highly literate Australian editor and computer expert: /keɪʃ/, he insisted.
- I edit professionally to both British and US norms, and am well versed in the differences on the page: lexical, syntactical, morphological, and all the rest. But as I say, we can still get certain "foreign" pronunciations wrong, for terms that are mostly confined to written texts unless they are spoken locally. Like "router", and also "cache". Hence my enquiries.
- See here for quite diverse opinions on the case of "cache"; and here for a sample of opinions from tech-savvy Ozfolk.
- NoeticaTea? 05:28, 11 April 2013 (UTC)
Compatibility of add-ons/extensions/plug-ins across browsers
external HD SMART results
Above I was talking about problems with making a Carbonite mirror image to an external HD. I thought they were saying that my internal HD was having problems. It looked OK under HDTune. I ran it on all my drives (2 internal, 4 external) and the external HD I was making the mirror image to gave some strange results:
HD Tune Pro: Seagate GoFlex Desk Health
ID Current Worst ThresholdData Status (01) Raw Read Error Rate 119 99 6 223195006 ok (03) Spin Up Time 89 89 0 0 ok (04) Start/Stop Count 98 98 20 2791 ok (05) Reallocated Sector Count 100 100 36 0 ok * (07) Seek Error Rate 77 60 30 55977040 ok (09) Power On Hours Count 90 90 0 9035 ok (0A) Spin Retry Count 100 100 97 0 ok * (0C) Power Cycle Count 100 100 20 94 ok (B7) (unknown attribute) 1 1 0 119 ok (B8) End To End Error Detection 100 100 99 0 ok * (BB) Reported Uncorrectable Errors 100 100 0 0 ok (BC) Command Timeout 100 84 0 12386497 ok * (BD) (unknown attribute) 100 100 0 0 ok (BE) Airflow Temperature 33 28 45 1127809091 ok (BF) G-sense Error Rate 100 100 0 0 ok (C0) Unsafe Shutdown Count 100 100 0 25 ok (C1) Load Cycle Count 99 99 0 2930 ok (C2) Temperature 67 72 0 67 ok (C3) Hardware ECC Recovered 23 4 0 223195006 ok (C5) Current Pending Sector 100 100 0 0 ok * (C6) Offline Uncorrectable 100 100 0 0 ok * (C7) Ultra DMA CRC Error Count 200 200 0 0 ok (F0) Head Flying Hours 100 253 0 2565 ok (F1) LifeTime Writes from Host 100 253 0 -1605911949 ok (F2) LifeTime Reads from Host 100 253 0 -794413361 ok
Health Status : n/a
I put * by the ones that the SMART article says are crucial. Look at the (BC) Command Timeout. On my other drives, this is 0-5. On this one it is over 12 million. Also, it is running hot at 67C (others are in the 35-47 range, and I've read that 55 or so is too hot). Right now I've got it unplugged to let it cool off. So does it look like this drive is having a problem? Bubba73 You talkin' to me? 14:36, 9 April 2013 (UTC)
Windows v. Unix Copy
I'm working in a mixed environment of windows and Unix machines, with a Samba server making the Unix files visible to the Windows clients. I've been told that I must use the Unix command line interface to copy Unix binaries between directories, as dragging and dropping them in Windows may result in the files getting corrupted.
Is this true? Is Windows really incapable of copying a binary file from one location to another? Is Samba the culprit? I assume .exe files and others that Windows realises are binaries are somehow protected? Rojomoke (talk) 16:18, 9 April 2013 (UTC)
- Copying files is rather hard, really. And doing so when calls are mediated through a foreign interface like Samba makes it harder. It's tempting to think copying a file is a matter of reading blocks of data from one file to another. And mostly this works just fine. But files are more than bytestreams, and handling them in a way that treats them as if they were risks some weird cases where the result isn't what a someone might expect. On Unix a file has, or can have, metadata, ACLs, extended file attributes and may be sparse, a symlink, or a hardlink. On Windows, NTFS files can have ACLs too (but a different kind). On Mac files can (but usually don't, now) have resource forks and on Windows (also, luckily, rarely) alternate data streams. Fancier modern file systems like Btrfs can implement copy-on-write. Sometimes you want to copy this stuff, sometimes you don't, and sometimes you want a choice. So rather than read-then-write, you really want a pre-written utility that's aware of all this scary stuff and just does "the right thing". Windows has library calls for this (CopyFile and CopyFileEx) as does OS-X (copyfile(3)). POSIX does not, and neither (as far as I know) does Linux or glibc (Linux has the rather basic sendfile(2) kernel call); see this entertaining LKML discussion about adding such a call; it mostly concludes "sendfile does some of it, we don't want to reimplement all of cp in the kernel, and it's lots of work so you go do it". Perhaps the safest thing is to call cp iself, which has tons of horrid special-case code to worry about this stuff. But it practice most of the above is super-rare, and lots of people just do read-then-write followed by some ioctls to set attributes (I just checked the source of Python3's shutil.copyfile, and that's what it does). I don't know what Samba does - the folks who write it are exceptionally smart, but given all the complexities above, it's very possible they couldn't think of a "clever" solution, and just did the obvious thing. It may simply be that those issuing the edict in question got burned once (in some hard to diagnose way) because some version of Samba didn't do things in a way they'd expected (on a file they didn't know was special). -- Finlay McWalterჷTalk 17:28, 9 April 2013 (UTC)
- not familiar with samba, but depending on the configurations of the unix and windows networks and their connection with each other, it might be a huge load on the windows network to move giant files around when the unix network can handle them without breaking a sweat. (that, I have had experience with) Gzuckier (talk) 19:16, 9 April 2013 (UTC)
- That's an excellent point... if you're moving a file on samba share A to samba share B, your local machine will do all the io on that (I'm pretty sure this is what's going on with my own network...). Samba has a lot of consideration for filesystem idiosyncrasies. The way it handles case-sensitivity has been brought up on this desk before, and it's more complicated than you'd think at first glance. The filelocking/atomic question is some low level stuff that Finlay explained nicely. A relevant follow up question is how many people are accessing these files at the same time, and how big are the pipes between them, etc. Some knowledge of the environment would probably shed some light on the impetus for the rule. The other thought I had that's not mentioned yet, is perhaps they're concerned about file permissions being consistent. There are lots of ways to handle this with samba (and I don't mean the complicated ACL stuff Finlay mentioned), but sometimes it's just easier to make a rule. Shadowjams (talk) 21:35, 9 April 2013 (UTC)
Free software to upscale images in bulk?
What's a good program to upscale a large quantity of images? By "upscale", I mean to increase the dimensions of a given file to a specified size. Quality degradation is not too terribly important, and I'm looking for a free (as in beer) program to do this, ideally without some silly watermark. Any suggestions? -18.104.22.168 (talk) 17:22, 9 April 2013 (UTC)
- Just in case you don't know, this isn't a very good idea, in general. You are increasing the file size without increasing the actual resolution. This is the opposite of the normal goal, to pack as much information as possible into a minimal space. If you need to display the image at a larger size, many display programs can do that without permanently increasing the file size. StuRat (talk) 03:52, 10 April 2013 (UTC)
how can i win golden ax, what are best tricks techniqes, what surprises are there and wich is the best character, is t best to run and leep or to stand and fight and when is best to use magic? on megadrive Horatio Snickers (talk) 20:40, 9 April 2013 (UTC)