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• Here's what I want... what do I tell my IT guy I need?

  - by Jason

  I work in the graphics department for a real estate brokerage, and we deal with a lot of photos. Agents take the photos, upload them to me, I touch up and standardize the photos, then I add them to an in-house server for future use by the graphics dept. I'd like to make the "sanitized" photo files available to the agents to use when they want, but I don't want the agents poking around the graphics department's files (things get misplaced, renamed and messed up in a hurry). What would be perfect is if we could create a read-only "mirror" (correct term?) of that server that could be accessed by the agents as needed, but which wouldn't feed back into our "sanitized" file system. What do I tell the office IT guy I need (platform-agnostically, because I don't know what he's running)? I never get to see him face-to-face, so I've got to word this as carefully and explicitly as possible. Thoughts? Thanks in advance for your feedback

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• Apache mod_rewrite RewriteCond to by-pass static resources not working

  - by d11wtq

  I can't for the life of me fathom out why this RewriteCond is causing every request to be sent to my FastCGI application when it should in fact be letting Apache serve up the static resources. I've added a hello.txt file to my DocumentRoot to demonstrate. The text file: ls /Sites/CioccolataTest.webapp/Contents/Resources/static hello.txt` The VirtualHost and it's rewrite rules: AppClass /Sites/CioccolataTest.webapp/Contents/MacOS/CioccolataTest -port 5065 FastCgiExternalServer /Sites/CioccolataTest.webapp/Contents/MacOS/CioccolataTest.fcgi -host 127.0.0.1:5065 <VirtualHost *:80> ServerName cioccolata-test.webdev DocumentRoot /Sites/CioccolataTest.webapp/Contents/Resources/static RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^/(.*)$ /Sites/CioccolataTest.webapp/Contents/MacOS/CioccolataTest.fcgi/$1 [QSA,L] </VirtualHost> Even with the -f, Apache is directing requests for this text file (i.e. access http://cioccolata-test.webdev/hello.txt returns my app, not the text file). As a proof of concept I changed the RewriteCond to: RewriteCond %{REQUEST_URI} !^/hello.txt That made it serve the text file correctly and allowed every other request to hit the FastCGI application. Why doesn't my original version work? I need to tell apache to serve every file in the DocumentRoot as a static resource, but if the file doesn't exist it should rewrite the request to my FastCGI application. NOTE: The running FastCGI application is at /Sites/CioccolataTest.webapp/Contents/MacOS/CioccolataTest (without the .fcgi prefix)... the .fcgi prefix is only being used to tell the fastcgi module to direct the request to the app.

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• Is it possible to implement an infinite IEnumerable without using yield with only C# code?

  - by sinelaw

  Edit: Apparently off topic...moving to Programmers.StackExchange.com. This isn't a practical problem, it's more of a riddle. Problem I'm curious to know if there's a way to implement something equivalent to the following, but without using yield: IEnumerable<T> Infinite<T>() { while (true) { yield return default(T); } } Rules You can't use the yield keyword Use only C# itself directly - no IL code, no constructing dynamic assemblies etc. You can only use the basic .NET lib (only mscorlib.dll, System.Core.dll? not sure what else to include). However if you find a solution with some of the other .NET assemblies (WPF?!), I'm also interested. Don't implement IEnumerable or IEnumerator. Notes The closest I've come yet: IEnumerable<int> infinite = null; infinite = new int[1].SelectMany(x => new int[1].Concat(infinite)); This is "correct" but hits a StackOverflowException after 14399 iterations through the enumerable (not quite infinite). I'm thinking there might be no way to do this due to the CLR's lack of tail recursion optimization. A proof would be nice :)

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• Disable thumbnails in Windows XP?

  - by quack quixote

  I regularly use Windows Explorer to browse my drives and data, and I notice little freezes and hiccups at times. It's especially noticable when browsing local or network folders with lots of video files (AVI, MKV, MPG, etc). I almost always browse in Details view, and the "Do not cache thumbnails" option is turned on. Even though I'm in "Details" mode, I'm convinced the sluggishness is due to Windows trying to generate thumbnails for the video files, so I want to disable thumbnail generation for these files. I occasionally use Thumbnails view for browsing image files, so I don't want to disable all thumbnails. But for future reference, this might be good to know. So I have three questions about disabling Windows thumbnail generation: How do I disable thumbnail generation for all non-image files? How do I disable thumbnail generation for all files? How do I disable thumbnail generation for one specific filetype? And finally, how do I undo (re-enable thumbnails) once I've performed one of the above?

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• What is a good custom MAC address? [closed]

  - by rausch

  My new notebook has been dropping the WiFi connection infrequently. The reason was, that my PS3 had the same MAC address. I changed the MAC address of my notebook and the WiFi is now stable. At first I just reduced the address' last block by 1, which happened to be the MAC address of another device. I reduced it again and for now it's fine. In order to avoid conflicts in the future, is there an address range that is safe to use for custom/non-vendor MAC addresses?

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• Duplicate pseudo terminals in linux

  - by bobtheowl2

  On a redhat box [ Red Hat Enterprise Linux AS release 4 (Nahant Update 3) ] Frequently we notice two people being assigned to the same pseudo terminal. For example: $who am i user1 pts/4 Dec 29 08:38 (localhost:13.0) user2 pts/4 Dec 29 09:43 (199.xxx.xxx.xxx) $who -m user1 pts/4 Dec 29 08:38 (localhost:13.0) user2 pts/4 Dec 29 09:43 (199.xxx.xxx.xxx) $whoami user2 This causes problems in a script because "who am i" returns two rows. I know there are differences between the two commands, and obviously we can change the script to fix the problem. But it still bothers me that two users are being returned with the same terminal. We suspect it may be related to dead sessions. Can anyone explain why two (non-unique) pts number are being assigned and/or how that can be prevented in the future?

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• Disable "System Memory Testing" via OMSA 6.4.0

  - by EGr

  Is it possible to disable system memory testing via OMSA 6.4.0? I can only find ways to do it using newer versions of OMSA; and I can't even see the setting in 6.4.0. I have quite a few machines that I want to disable this (BIOS) setting on, but I don't want to have to install the new OMSA and reboot. My intentions are to disable the setting so that when the systems are rebooted in the future, they don't need to go through the system memory testing. If it is possible to disable this another way, without OMSA or manually changing the BIOS settings, I would be open to that as well.

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• What's the closest equivalent of Little Snitch (Mac program) on Windows?

  - by Charles Scowcroft

  I'm using Windows 7 and would like to have a feature like Little Snitch on the Mac that alerts you whenever a program on your computer makes an outgoing connection. Description of Little Snitch from its website: Little Snitch informs you whenever a program attempts to establish an outgoing Internet connection. You can then choose to allow or deny this connection, or define a rule how to handle similar, future connection attempts. This reliably prevents private data from being sent out without your knowledge. Little Snitch runs inconspicuously in the background and it can also detect network related activity of viruses, trojans and other malware. Little Snitch provides flexible configuration options, allowing you to grant specific permissions to your trusted applications or to prevent others from establishing particular Internet connections at all. So you will only be warned in those cases that really need your attention. Is there a program like Little Snitch for Windows?

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• Roaming Profiles, Folder redirection or... both

  - by Adrian Perez

  Hello, i'm developing a remote desktop services in w2008r2. Now, it's going to be a server, but in the future it's possible that another server could be added to the farm. Now, i'm creating roaming profiles and folder redirection to save space. Now, i have some doubts... if i'm redirecting all the folders i can do through gpo (start menu, desktop, appdata, My Documents, Videos, Music...), does it make sense to use roaming profiles? I mean, i'm redirecting almost everything. So, if i don't use roaming profiles, what kind of data is not shared/roamed? Perhaps is not necessary and if i set roaming profiles, i will add more unnecessary complexity to the infraestructure. What do you think about? Some advice or recomendation? Thanks!

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• BIOS password and hardware clock problems

  - by Slartibartfast

  I have HP 6730b lap top. I've bought it used and installed (Gentoo) linux on it. BIOS is protected with password, and guy I bought it from said "I've tweaked BIOS from Windows program, it never asked me for password". I've tried to erase password by removing battery, but it's still there. What did get erased obviously is hw clock. This is what hapends: a) I can leave lap top in January 1980 and it works b) I can correct system time, but boot wil fail with "superblock mount time in future" from where I need to manually do fsck and continue boot c) I can correct system time and sync it with hwclock -w but than it will behave as b) and it will reset BIOS time to 1.1.1980 00:00 So I need either a way to bypass a BIOS password (wich after lot of googling seems impossible),a way to persist a clock, or a setup that will enable hw clock in eighties, system clock in present time and normal boot.

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• How can I work around SQL Server - Inline Table Value Function execution plan variation based on par

  - by Ovidiu Pacurar

  Here is the situation: I have a table value function with a datetime parameter ,lest's say tdf(p_date) , that filters about two million rows selecting those with column date smaller than p_date and computes some aggregate values on other columns. It works great but if p_date is a custom scalar value function (returning the end of day in my case) the execution plan is altered an the query goes from 1 sec to 1 minute execution time. A proof of concept table - 1K products, 2M rows: CREATE TABLE [dbo].[POC]( [Date] [datetime] NOT NULL, [idProduct] [int] NOT NULL, [Quantity] [int] NOT NULL ) ON [PRIMARY] The inline table value function: CREATE FUNCTION tdf (@p_date datetime) RETURNS TABLE AS RETURN ( SELECT idProduct, SUM(Quantity) AS TotalQuantity, max(Date) as LastDate FROM POC WHERE (Date < @p_date) GROUP BY idProduct ) The scalar value function: CREATE FUNCTION [dbo].[EndOfDay] (@date datetime) RETURNS datetime AS BEGIN DECLARE @res datetime SET @res=dateadd(second, -1, dateadd(day, 1, dateadd(ms, -datepart(ms, @date), dateadd(ss, -datepart(ss, @date), dateadd(mi,- datepart(mi,@date), dateadd(hh, -datepart(hh, @date), @date)))))) RETURN @res END Query 1 - Working great SELECT * FROM [dbo].[tdf] (getdate()) The end of execution plan: Stream Aggregate Cost 13% <--- Clustered Index Scan Cost 86% Query 2 - Not so great SELECT * FROM [dbo].[tdf] (dbo.EndOfDay(getdate())) The end of execution plan: Stream Aggregate Cost 4% <--- Filter Cost 12% <--- Clustered Index Scan Cost 86%

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• Direct DB to Web Server connection

  - by Joel Coel

  I have a database server sitting right underneath a virtual machine host server in the rack, and this vm host is primarily responsible for servers hosting a couple different web sites and app servers that all talk to databases on the other server. Right now both servers are connected to the same switch, and I'm pretty happy with the pathing. However, both servers also have an unused network port. I wondering about the potential benefits of using a short crossover or normal+auto mdix network cable to connect these two servers together directly. Is this a good idea, or would I be doing something that won't show much benefit and is just likely to trip up a future admin who's not looking for this? The biggest weakness I can see right now is that this would likely require a code change for each vm app to point to the new IP of the database server on this private little network, and if I have a problem with the virtual machine host and have to spin up it's guests elsewhere while I fix it I'll have to change this back before things will work.

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• FLV performance and garbage collection

  - by justinbach

  I'm building a large flash site (AS3) that uses huge FLVs as transition videos from section to section. The FLVs are 1280x800 and are being scaled to 1680x1050 (much of which is not displayed to users with smaller screens), and are around 5-8 seconds apiece. I'm encoding the videos using On2's hi-def codec, VP6-S, and playback is pretty good with native FLV players, Perian-equipped Quicktime, and simple proof-of-concept FLV playback apps built in AS3. The problem I'm having is that in the context of the actual site, playback isn't as smooth; the framerate isn't quite as good as it should be, and more problematically, there's occasional jerkiness and dropped frames (sometimes pausing the video for as long as a quarter of a second or so). My guess is that this is being caused by garbage collection in the Flash player, which happens nondeterministically and is therefore hard to test and control for. I'm using a single instance of FLVPlayback to play the videos; I originally was using NetStream objects and so forth directly but switched to FLVPlayback for this reason. Has anyone experienced this sort of jerkiness with FLVPlayback (or more generally, with hi-def Flash video)? Am I right about GC being the culprit here, and if so, is there any way to prevent it during playback of these system-intensive transitions?

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• How can I limit CloudFront downloads

  - by Alex Crouzen

  I'm looking to use Amazon's CloudFront to host some content in the near future. Currently, I'm keeping it very simple and I'm just uploading my content to S3 and then making a distribution available via Cloudfront. However, because I have a limited budget, I'd like to be able to limit the number of downloads or the money spent on bandwidth. As far as I can see, I can't set any quotas or budgets like you can in Google's App Engine, so I'm looking for another way of doing this. Has anyone had any experience doing this? One approach I'm thinking of is having to place a webserver with redirects in between, but that kind of defeats the simplicity of CF for me.

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• Algorithm possible amounts (over)paid for a specific price, based on denominations

  - by Wrikken

  In a current project, people can order goods delivered to their door and choose 'pay on delivery' as a payment option. To make sure the delivery guy has enough change customers are asked to input the amount they will pay (e.g. delivery is 48,13, they will pay with 60,- (3*20,-)). Now, if it were up to me I'd make it a free field, but apparantly higher-ups have decided is should be a selection based on available denominations, without giving amounts that would result in a set of denominations which could be smaller. Example: denominations = [1,2,5,10,20,50] price = 78.12 possibilities: 79 (multitude of options), 80 (e.g. 4*20) 90 (e.g. 50+2*20) 100 (2*50) It's international, so the denominations could change, and the algorithm should be based on that list. The closest I have come which seems to work is this: for all denominations in reversed order (large=>small) add ceil(price/denomination) * denomination to possibles baseprice = floor(price/denomination) * denomination; for all smaller denominations as subdenomination in reversed order add baseprice + (ceil((price - baseprice) / subdenomination) * subdenomination) to possibles end for end for remove doubles sort Is seems to work, but this has emerged after wildly trying all kinds of compact algorithms, and I cannot defend why it works, which could lead to some edge-case / new countries getting wrong options, and it does generate some serious amounts of doubles. As this is probably not a new problem, and Google et al. could not provide me with an answer save for loads of pages calculating how to make exact change, I thought I'd ask SO: have you solved this problem before? Which algorithm? Any proof it will always work?

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• What are practical guidelines for evaluating a language's "Turing Completeness"?

  - by AShelly

  I've read "what-is-turing-complete" and the wikipedia page, but I'm less interested in a formal proof than in the practical implications of being Turing Complete. What I'm actually trying to decide is if the toy language I've just designed could be used as a general-purpose language. I know I can prove it is if I can write a Turing machine with it. But I don't want to go through that exercise until I'm fairly certain of success. Is there a minimum set of features without which Turing Completeness is impossible? Is there a set of features which virtually guarantees completeness? (My guess is that conditional branching and a readable/writeable memory store will get me most of the way there) EDIT: I think I've gone off on a tangent by saying "Turing Complete". I'm trying to guess with reasonable confidence that a newly invented language with a certain feature set (or alternately, a VM with a certain instruction set) would be able to compute anything worth computing. I know proving you can building a Turing machine with it is one way, but not the only way. What I was hoping for was a set of guidelines like: "if it can do X,Y,and Z, it can probably do anything".

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• Should I be running my scheduled backups as SYSTEM or as the our domain admin?

  - by MetalSearGolid

  I have a daily backup which is scheduled through the Task Scheduler. It failed with a strange error code last night, but I was able to search and find a blog post with how to avoid the error in the future. However, one of his recommendations was to run the backups as the Administrator user of the domain. Since all of the files being backed up are local to this system, should I continue to have the backups run as SYSTEM? Or is it actually better to run it as a different user? I have been running these backups for well over a year now and have only had a handful of failures, but ironically when it does fail, the error code means it was a permissions issue (or so I read, this code seems to be undocumented by Microsoft). Thanks in advance for any insight into this. Might as well post the error code here too, in case anyone would like to share their insight on this as well, but I rarely ever get this error, so I don't care too much about it: 4294967294

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• Accurate Windows equivalent of the Unix which(1) command

  - by SamB

  It's easy enough to write a simple script that works like the which(1) command from unix, which searches for a given command along the PATH. Unfortunately, the CreateProcess function is not so simple, so this type of script does not give accurate results: CreateProcess looks in a number of directories not in the PATH, looks for files with all of the extensions listed in PATHEXT, etc. Worse, who knows what might be added in future versions of Windows? Anyway, my question is: is there a robust, accurate which(1) equivalent for Windows, which always tells you what file CreateProcess would find?

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• Adding operation in middle of complex sequence diagram in visio 2003

  - by James

  I am using Microsoft Visio 2003 to define static classes with operations/methods and a sequence diagrams referring to these classes. The sequence diagram is almost done, but i realized that i missed one operation in middle of the diagram. When i try to move rest of the sequences down by selecting it as a block, all the operations in the block loose link with static diagrams. ( Methods which were referred to static classes as fun(), became fun, which means that now they no longer refer to static diagrams and any future changes would not be reflected in dynamic sequence diagrams automatically.) The sequence diagrams have grown to A3 size paper and i have many of such diagrams which needs correction. Manually moving the operations one by one would involve lots of effort. Could someone kindly suggest a way to overcome this problem?

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• TLS-SRP ciphersuites support in browsers

  - by dag

  i'm doing some research on how browsers support TLS-SRP (RFC5054). I know that TLS-SRP is implemented in GnuTLS, OpenSSL as of release 1.0.1, Apache mod_gnutls, cURL, TLS Lite and SecureBlackbox. I don't find any fresh source of information, only this from 2011: http://sim.ivi.co/2011/07/compare-tls-cipher-suites-for-web.html I'm testing them manually at the moment, but as far as i know nobody seems to support it. My interest is then in understanding if browsers are planning to support these ciphersuites in the future, apart from the current state. Actual findings (i'm sorry i can't include more than 2 links): Firefox: BugZilla bug id: 405155 IE: Microsoft connect Bug ID:788412 , date:22/05/2013 (closed) Chromium/Chrome: the interesting work by quinn slack http://qslack.com/2011/04/tls-srp-in-chrome-announcement/ Chromium code review: 6804032 Any other help?

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• Installing a Wl-138g wireless NIC on ubuntu server

  - by Narcolapser

  So I have this little server that I've been working on as a hobby. But due to changes in living arrangements I have move and it won't have access to a wired lan. So I need to install a wireless adapter i had sitting around. But most tutorials I have run across are either out dated, or about ubuntu desktop and talk about things using a GUI. So my question is firstly is there a utility for identifying and downloading drivers for new hardware. that would save my having this problem in the future. If not, how do i go about installing said wireless NIC? ~N

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• What does "Endcode #816" stand for in Canon iR-ADV C5035 printer logs?

  - by Odin Kroeger

  We are using the Canon iR-ADV C5035. Today a worker has reported that some Word documents cannot be printed via that device (others do). I could confirm that and found that the Canon iR-ADV C5035 logs showed an "Endcode" "#816" for every print job that was not printed (whereas other print jobs show an "Encode" "OK"). Unfortunately, neither the manual that came with the Canon copy machine nor the web seems to know what this "Endcode" means. Canon support has been informed, but I'm still waiting for them to call me back. Does anyone know how I could find out what this "Endcode" stands for? Or, preferably, where I can look up the meaning of such Canon "Endcodes" in the future? Thanks in advance for any hints.

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• VBA compare and sort strings with quirky characters

  - by Smandoli

  I am comparing text values from two DAO recordsets in MS Access. I sort on the text field, then go through both recordsets comparing the values from each. The sets are substantially different and while they're mostly alpha-numeric, spaces and symbols like hyphens and periods are very common. My program depends on predictable sorting and fool-proof comparing. But unfortunately, the sort will rank two values differently than the comparison function. StrComp is the obvious first choice: varResult = StrComp(Val_1, Val_2) RFA-300 14.9044 RFA300 14-2044 But for the two pairs above, StrComp returns a different value than one would expect based on the sort. Including vbTextCompare or vbBinaryCompare affects StrComp's result, but not so as to solve the problem. Note the values must always be compared as strings. Of course I make sure that "14-2044" and "14.9044" aren't evaluated as -2030 and ~15. That's not the cause of my problem. I learned API-based functions are more reliable for quirky texts, so I tried these: varResult = CompareString(LOCALE_SYSTEM_DEFAULT, _ SORT_STRINGSORT, strVal_2, -1, strVal_1, -1) varResult = CompareString(LOCALE_SYSTEM_DEFAULT, _ NORM_IGNOREWIDTH, strVal_2, -1, strVal_1, -1) The first one returns the opposite of StrComp. The second one returns the same as StrComp. But neither yields a result that is consistent with the sort order. (NORM_IGNOREWIDTH is probably not relevant, but I needed a place-holder substitute and it looked as good as any.) UPDATE: This is a complete rewrite of the original post, deleting all the info about why I really need this -- just take my word for it and enjoy the brevity.

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• What could be causing Windows to randomly reset the system time to a random time?

  - by Jonathan Dumaine

  My Windows 7 machine infuriates me. It cannot hold a date. At one point it all worked fine, but now it will decide that it needs to change the system time to a random time and date, either in the future or past. There seems to be no correlation or set interval of when it happens. In attempt to remedy this, I have: Correctly set the time in BIOS. Replaced the motherboard battery with a new CR2032 (even checked it with a multimeter). Tried disabling automatic internet synchronizing via "Date and Time" dialog. Stopped, restarted, left disabled the Windows Time service. Yet with all of these actions, the time will continue to change. Any ideas?

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• Using MEF with exporting project that uses resources (xml) contained in the xap.

  - by JSmyth

  I'm doing a proof of concept app in SL4 using MEF and as part of the app I am importing another xap from an existing Silverlight Project and displaying it in my host project. The problem is that the existing app uses some .xml files (as content) and it uses linq2xml to load these files which are (assumed to be) bundled in the xap. When I compose the application the initalization fails because the host app doesn't contain the xml files. If I copy these xml files into the host project and run it the composition works fine. However, I need to keep the xml files in the original project. Is there a way that I can download a xap and look at it's contents for xml files and then load them into the host xap at runtime so that after the compostion takes place the xml resources that are required can be found? Or should I work out some kind of contract with an import/export to pass the xml files to the host xap? As the people developing the imported xaps (should the project go ahead) are from a different company, I would like to keep changes to the way they develop their apps to a minimum.

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