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• Lubuntu fails plug and play such as scanners; default file location on Gnumeric

  - by Arkay

  I am new to Lubuntu and I have been giving it a good try but confess I am now tempted to go back to Windows. However, I am open to persuasion if I can get a simple answer to two questions. The first is a hardware question issue. It seems from the forum that many users like me cannot use plug and play hardware such as scanners. Are we doing anything wrong or does Lubuntu (mine is 13.04) not support plug and play or scanners? I have read lots of previous answers about scanners but they all seem to involve re-writing lines of instructions to various areas of the system - not something an amateur like me can do with ease. Mine is a Packard Belle Diamond 1200 plus and apparently it should work fine on Lubuntu - but can I even get it recognised, let alone working - No? Secondly is there an easy way in Gnumeric to set the default file location so that I don't have to trawl through my whole tree to locate a file I want to open? Thanks to anybody who can get me stay with Lubuntu with their wisdom.

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• Best approach for tracking dependent state

  - by Pace

  Let's pretend I work on a project tracking application. The application is a database backed, server hosted, web application. In this application there are Projects which have many Activities which have many Tasks. A Task has two date fields an originalDueDate and a projectedDueDate. In addition, there are dynamic fields on the Activities and the Projects which indicate whether the Activity or Project is behind schedule based on the projected due dates of the child tasks and various other variables such as remaining buffer time, etc. There are a number of things that can cause the projectedDueDate to change. For example, an employee working on the project may (via a server request) enter in a shipping delay. Alternatively, a site may (via a server request) enter in an unexpected closure. When any of these things occur I need to not only update the projectedDueDate of the Task but also trigger the corresponding Project and Activity to update as well. What is the best way to do this? I've thought of the observer pattern but I don't keep a single copy of all these objects in memory. When a request comes in, I query the Task in from the database, at that point there is no associated Activity in memory that would be a listener. I could remove the ability to query for Tasks and force the application to query first by Project, then by Activity (in context of Project), then by task (in context of Activity) adding the observer relationships at each step but I'm not sure if that is the best way. I could setup a database event listening system so when a Task modified event is dispatched I have a handler which queries for the Activity at that point. I could simply setup a two-way relationship between Task and Activity so that the Task knows about the parent Activity and when the Task updates his state the Task grabs his parent and updates state. Right now I'm stuck considering all the options and am wondering if any single approach (doesn't have to be a listed approach) is jumping out at others as the best approach.

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• How to combine with openvpn, dynamic-ip?

  - by asfasdv

  Dear everyone, I am currently using openvpn to surf online to bypass censorship. Let me show you the initial scenario: before openvpn is turned on: IP: 1.2.3.4 (hypothetical, checked by visiting whatismyip.com/) after openvpn is turned on IP: 10.2.3.4 (this is also checked with whatismyip.com/, I assume this is where the vpn's exit point's IP ) Situation: Once I enable openvpn, I can still ssh into this computer by sshing into 1.2.3.4, even though visiting whatismyip.com/ says it's 10.2.3.4. However, I am on dynamic IP, I run a website, and am using tools (inadyn in particular) which pings the freedns.afraid.org (my dns server) and updates my ip. The messed up part is when inadyn does so, my dns changes the ip to 10.2.3.4, which is presumably the exit point of my vpn. How do I get around this? (Note that sshing into 1.2.3.4 STILL works).

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• Upgrading Blog to WordPress, keep old one or redirect?

  - by Spazm

  I have had a blog for around 4 years now that has gained some success and gets tons of residual and organic traffic. I am using an outdated version of BlogEngine.NET and we are going to switch to WordPress. Currently, our blog is at ourwebsite.com/blog, and I don't really want to mess with our web server. I setup a new server just for WordPress and instead of dealing with proxies and things that are above my head, the new blog will be at blog.oursite.com. I am trying to figure out the best way to go about doing this. We value our search engine rankings very much so, as that is where 90% of our traffic comes from. Would I be best off: Importing all of the old blog posts from oursite.com/blog to blog.oursite.com and then redirecting all of the articles, categories, authors, pages and tags to the new blog and giving up the direct links to our current site. Keeping all of our current articles as they are, and only add new content to the new blog.oursite.com and just kind of let the old blog float around our site.

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• Create Adjustable Depth of Field Photos with a DSLR

  - by Jason Fitzpatrick

  If you’re fascinating by the Lytro camera–a camera that let’s you change the focus after you’ve taken the photo–this DSLR hack provides a similar post-photo focus processing without the $400 price tag. Photography tinkers at The Chaos Collective came up with a clever way of mimicking the adjustable depth-of-field adjustment effect from the Lytro camera. The secret sauce in their technique is setting the camera to manual focus and capturing a short 2-3 second video clip while they rotate the focus through the entire focal range. From there, they use a simple applet to separate out each frame of the video. Check out the interactive demo below: Anywhere you click in the photo shifts the focus to that point, just like the post processing in the Lytro camera. It’s a different approach to the problem but it yields roughly the same output. Hit up the link below for the full run down on their technique and how you can get started using it with your own video-enabled DLSR. Camera HACK: DOF-Changeable Photos with an SLR [via Hack A Day] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• Set up a "relay" service

  - by trikks

  Hi! I'm trying to create a 'left client' server < 'right client' setup but need some advice and tips. Let's say that I have a server-daemon on the left side, like a vnc-server that connects to the middle server. On the right side I've got a client that want to connect to the left server-daemon, but it has to be done through the middle server. I assume this should be done with some tunneling service. The server environment is a fully featured Debian Linux or Mac OS X Server host. Any idéas? Thanks / Trikks

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• Is it possible to boot from internet?

  - by Calmarius

  Let's assume the following situation: you have a computer with empty hard disk, and you don't have a CD, floppy, pen drive nearby to boot the computer from. But you have connection to the Internet. Modern computers support network booting using PXE, but I haven't found anything regarding booting via the internet. So, is it possible to use PXE to load an image from the internet and boot it? By having a running system (even a minimal Linux) in RAM, it should be possible to install it on the hard disk, and build up a working system from here.

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• Best practice- handling images on website

  - by Steve

  I am porting an old eCommerce site to MVC 3 and would like to take advantage of design improvements. The site currently has product images stored in 3 sizes: thumbnail, medium (for display in a list) and expanded for a zoomed look. Right now we are having to upload 3 separate images that are sized exactly right, provide 3 different names that match what the site expects, etc., it is a pain. I'd like to upload just 1 file, the large one, then let the site reduce it to needed sizes, and I'd like the flexibility to change the thumbnail and list sizes depending on user preferences, form factor (e.g. mobile, iPad, desktop), etc. so might need many copies of the same image. My question is should the image be reduced then saved several times upon upload and if so what is a good storage/naming convention? The other idea is to store just the single image but resize it programmatically before serving it to the client. Has anybody done this and what are the tradeoffs besides a few more machine cycles? How do you pass a temporary image in memory to the client (there is no URL)?

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• Is there an alternative to the term "calling object"?

  - by ybakos

  Let's suppose you've got a class defined (in pseudocode): class Puppy { // ... string sound = "Rawr!"; void bark() { print(sound); } } And say, given a Puppy instance, you call it's bark() method: Puppy p; p.bark(); Notice how bark() uses the member variable sound. In many contexts, I've seen folks describe sound as the member variable of the "calling object." My question is, what's a better term to use than "calling object?" To me, the object is not doing any calling. We know that member functions are in a way just functions with an implicit this or self parameter. I've come up with "receiving object," or "message recipient," which makes sense if you're down with the "messaging" paradigm. Do any of you happy hackers have a term that you like to use? I feel it should mean "the object upon which a method is called" and TOUWAMIC just doesn't cut it.

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• Remote Desktop closes with Fatal Error (Error Code: 5)

  - by Swinders

  We have one PC (Windows XP SP3) that we can not log onto using a Remote Desktop session. Logging on to the PC directly (sitting in front of it using the connected keyboard and monitor) work fine. From a second PC (tried a number of different ones but all Windows XP SP3) I run 'mstsc' and type in PC name to connect to. This shows the login box which we can enter the correct login details and click OK. Within a few second we get an error: Title: Fatal Error (Error Code:5) Error: Your Remote Desktop session is about to end. This computer might be low on virtual memory. Close your other programs, and then try connecting to the remote computer again. If the problem continues, contact your network administrator or technical support. None of the computers we are using are low on memory (2Gb+) and we let windows manage the virtual memory side of things. We do not see this with any other PC and do use Remote Desktop in meeting rooms to connect to user PCs with no problems.

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• Show image in cell based on cell value

  - by JoeM

  I am creating a weekly income comparison table. I want to compare A5 and A10 cells and display appropriate image in B7 cell. The image will be either UP or DOWN arrow (which reflects increase or decrease). I've created a formula which puts text up or down in the cell, but I don't know how to replace it with the up/down image. =IF(D77>D69, "up", IF(D77<D69, "down")) How can I do it? I know it's possible. Note: I am using Google Docs Excel, so please let me know if this cannot be done in it, but I have to use the real Excel installed on my laptop.

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• How "commercially savvy" should software developers be? [closed]

  - by mattnz

  I have been watching answers to many questions on this site, and have come to the conclusion that commercial pragmatism does not factor into many software development discussions. As a result, I seriously wonder at the commercial skills within the industry, specifically the ability to deliver projects on time and to a budget. I see no indication from the site that commercially successful project delivery is a serious concern, yet the industry has a reputation for poor performance in this. Rarely, if ever, does the cost of time factor into discussions. I have never seen concepts such as opportunity cost, time to market, competitive advantage or cash flow mentioned, let alone discussed in technical answers to questions. How can you answer virtually any question without understanding the commercial background on which it is asked? Even Open source projects have a need to operate efficiently and deploy their limited resources to providing the most value for effort. Typically small start-ups have cash flow issues that outweigh longevity concerns, yet they are typically still advised to build for a future they probably won’t have if they do. Is it fair to say that these problems are solely the Managers and Project managers to solve, or are we, as developers, also responsible for ensuring successful on time, within budget delivery of projects, even if those budgets do not allow use to achieve engineering excellence?

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• Implementing unit testing at a company that doesn't do it

  - by Pete

  My company's head of software development just "resigned" (i.e. fired) and we are now looking into improving the development practices at our company. We want to implement unit testing in all software created from here on out. Feedback from the developers is this: We know testing is valuable But, you are always changing the specs so it'd be a waste of time And, your deadlines are so tight we don't have enough time to test anyway Feedback from the CEO is this: I would like our company to have automated testing, but I don't know how to make it happen We don't have time to write large specification documents How do developers get the specs now? Word of mouth or PowerPoint slide. Obviously, that's a big problem. My suggestion is this: Let's also give the developers a set of test data and unit tests That's the spec. It's up to management to be clear and quantitative about what it wants. The developers can put it whatever other functionality they feel is needed and it need not be covered by tests Well, if you've ever been in a company that was in this situation, how did you solve the problem? Does this approach seem reasonable?

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• Is it possible to keep only one Database for both web and desktop applications?

  - by B4NZ41

  I'm experiencing a trouble with my business model, let me explain better. I'm developing a software for 1 year and few months, it's for the food industry, more exactly a software to: Delivery, Take Way, Table Reservation, POS, Accounts Payable and Receivable, Prints(receipt), Kitchen Monitors Orders, Customers Orders Control and Fiscal Area. Well, I had separated the software mainly in two areas, one is web area and the other is desktop area (Used by Admins only) and local installed. 1 - Web Area (Basically do the follow:) Show Catalog with the products Customers Make Orders Customers Pay for the Orders etc ... as mentioned above 2 - Desktop Area Manage Orders Manage Customers Manage Suppliers Manage Accounts Payable and Receivable etc ... as mentioned above The web area is hosted in an online web server (scripts and database are online). The Desktop area is hosted locally in a Linux machine with a local database and local scripts files. My question is: Is it possible to keep only one Database for both applications? If YES, please what is the best approach? Follow my technical specification environment Database: Actually I have two databases working and I would love to keep only one. Operating System: Linux (Kernel 2.6.X and above) or Windows (XP and above) For the Web Area Apache, PHP, Python, Java Script, Shell Script and MySQL. For the Desktop Area: PHP-GTK2, Apache, PHP, MySQL and Shell Script.

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• Best way to setup hosts, subdomains, and IPs [closed]

  - by LynnOwens

  I own a domain, let's call it mydomain.com. I need to host the following off it: forums.mydomain.com www.mydomain.com blog.mydomain.com objects.mydomain.com I believe I can get 5 static IPs. I plan on assigning one each to those four hosts. Then I need to adhoc create names, all below objects.mydomain.com. For instance: one.objects.mydomain.com two.objects.mydomain.com three.objects.mydomain.com I need to create these names programatically, and without human intervention. Preferably, they would not get their own IPs. They would use the IP of objects.mydomain.com. First question: Does this mean that I need to host my own DNS? Second question: I'm using Apache as a web server. What does the virtual host configuration look like? I was experimenting with the following to understand how routing on domain names works and I always ended up at www. <VirtualHost *:80> ServerAdmin [email protected] ServerName www.mydomain.com ServerAlias www.mydomain.com DocumentRoot "E:/Static/www" RewriteEngine On RewriteRule ^(/www/.*) /www$1 </Virtualhost> <VirtualHost *:80> ServerAdmin [email protected] ServerName forums.mydomain.com ServerAlias forums.mydomain.com DocumentRoot "E:/Static/forums" RewriteEngine On RewriteRule ^(/forums/.*) /forums$1 </Virtualhost>

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• When creating a GUI wizard, should all pages/tabs be of the same size? [closed]

  - by Job

  I understand that some libraries would force me to, but my question is general. If I have a set of buttons at the bottom: Back, Next, Cancel?, (other?), then should their location ever change? If the answer is no, then what do I do about pages with little content? Do I stretch things? Place them in the lone upper left corner? According to Steve Krug, it does not make sense to add anything to GUI that does not need to be there. I understand that there are different approaches to wizards - some have tabs, others do not. Some tabs are lined horizontally at the top; others - vertically on the left. Some do not show pages/tabs, and are simply sequences of dialogs. This is probably a must when the wizard is "non-linear", e.g. some earlier choices can result in branching. Either way the problem is the same - sacrifice on the consistency of the "big picture" (outline of the page/tab + location of buttons), or the consistency of details (some tabs might be somewhat packed; others having very little content). A third choice, I suppose is putting extra effort in the content in order to make sure that organizing the content such that it is more or less evenly distributed from page to page. However, this can be difficult to do (say, when the very first tab contains only a choice of three things, and then branches off from there; there are probably other examples), and hard to maintain this balance if any of the content changes later. Can you recommend a good approach? A link to a relevant good blog post or a chapter of a book is also welcome. Let me know if you have questions.

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• Re-encoding a video file and increasing the size -- does this improve the quality?

  - by Josh

  If I have a video file at 320x240 resolution which I want to re-encode (because I don't like the encoding it's in now) and I also want to play it at double size (640x480), will I get higher quality if I scale it up to 640x480 when I convert it to a new format, verses keeping it at 320x240 in the new format and playing it at double size? This probably depends on the program used to convert, and if so, please let me know any program which might increase the quality. Here's my thinking. If I play a 320x240 file at double size, the system has to scale up each frame in real time, whereas if I scale up while recompressing the system may be able to use a more intensive algorythm like Bicubic interpolation . However I am not sure if this is true or not.

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• In Sublime Text 2, how can I indent out to a straight column with multiple cursors on a ragged edge?

  - by mtoast

  Suppose I've got multiple cursors along several lines, like this: foo| barr| foobar| baz| How can I automatically push the whitespace at the end of each line out to a flat edge, like this?: foo | barr | foobar | baz | (In these examples, | is supposed to be my cursor.) EDIT #1 When you just Tab or Space from the initial arrangement, you get this: # Useful, but not what I'm looking for foo | barr | foobar | baz | That's useful, but not what I'm looking for. I'm looking for some kind of keyboard shortcut that will let me indent from a ragged multi-cursor insert out to a straight column.

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• how to override ckeditor events [migrated]

  - by joe

  I am new to ckeditor, I have hard time figuring this issue out. due to my html design; if I try to use the link editor dialog while my ckeditor is maximized, it just doesn't show up, I understand that ckeditor is the top most object in my html page and the link dialog comes underneath it. if now I bring ckeditor to its normal state I will be able to see and use the link dialog. my idea is to slightly override the link button click event as follows: if the editor is in full screen mode, bring it back to the normal state. and keep a flag somewhere so that when I close the link dialog, I can decide whether to bring back the ckeditor to a maximized mode again. now this is easy logic except that I do not know how to override the click event of the link button and keep it work as expected. here's what I have: $().ready(function () { var editor = $('#txa').ckeditor(); CKEDITOR.plugins.registered['link']= { init : function( editor ) { var command = editor.addCommand( 'link', { modes : { wysiwyg:1, source:1 }, exec : function( editor ) { if(editor.commands.maximize.state == 1 ){ alert("maximized"); //....here bring back the editor to UN-maximized state and let the link button event click do the default behavior } else { alert("normal state"); } //2 is normal state //1 is maximized } } ); editor.ui.addButton( 'link',{label : 'YOUR LABEL',command : 'link'}); } } }); html part to make the exemple work: <div> <textarea id="txa"> </textarea> </div> TO BE SHORT: http://jsfiddle.net/Q43QP/ if the editor is maximized, bring it to normal state then show the link dialog.

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• Which Microsoft server applications are compatible with Windows Server 2012? [closed]

  - by Massimo

  As mush as I personally find the new user interface to be absolutely awful (and even more so on a server O.S.), we'll soon have to put up with Windows Server 2012 (formerly Windows Server 8). So, let's start with the basics: which Microsoft products do actually run on it? I've been looking around for a compatibility chart for a while, but couldn't find one. On the requirements/support pages for various Microsoft products (even for the latest releases), Windows Server 2012 is never mentioned at all. So, what about... SQL Server Exchange Lync SharePoint System Center (CM, OM, DPM, VMM...) And so on?

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• Googlebot visit but no cache update - why?

  - by Mick

  I have made a new plain vanilla HTML website. I have been making regular modifications to it on an almost daily basis. The site is hosted by hostmonster and as part of their service they offer "awstats" to let you know assorted details of visitors to the site. One thing is puzzling me. According to awstats, a "robot/spider" calling itself "Googlebot" visited my site as recently as today (28th June 2011), but when I find my site on google (e.g. by searching for "full reserve banking") the cache is dated only the 5th June. I always thought that a visit from the google robot was synonymous with a cache update. Am I wrong? Or have I accidentally put something in the site telling google that nothing has been updated? EDIT: It seems a moderator has removed the name of my website, so there is now no chance that anyone could check out if I had made some error on my site :-( ... but anyway, in answer to paulmorriss' question, here is what aw stats was telling me:

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• Which metric/list should be used to evaluate whole software development team?

  - by adt

  Title might be seem vague, so let me tell you a little bit history what i am trying to clarify question. I have been hired as a consultant for a corporate's small developement divison ( The company also owns a couple of software dev. companies) My ex manager runs a BI team, with reportes, analyts and developers. He asked me to evaluate overall design, software developement process and code quality . Here what i found, Lots of copy/paste code everywhere ( no reuse ) Even though they have everything TFS, VS Ultimate etc, No Build process , No Cruise Control.net / team city... No unit tests Web Pages with 3700 lines of code, Lots of huge functions ( which can be divided into smaller one's ) No naming convention both db and c# code No 3r party or open source project No IoC No Seperation Of Concerns No Code Quality Check ( NDepend or FxCope or nothing ) No Code Review No Communication within the team They claim they wrote an application framework ( 6 months 3 persons), but I would hardly call a framework ( of course no unit test, there are some but all commented out). Framework contains 14 projects but there are some projects with 1 file 20 lines of code . Honestly, what people are doing fixing bug all thr day( which will provide more bugs eventually), they are kind of isolated from community, some team members even dont know github or stackoverflow they probably went there with google but they dont know about it. So here is question, Is This list ok ? Or am i being picky? Since I dont have any grudge against them, I just want to be fair, honest and I would like to hear you suggestions, before I would submit this list. And since this list also will be review by software division's manager, I dont want any heart break or something like this. http://www.hanselman.com/altnetgeekcode/ For example I would love to such lists, i cant make references. Thanks in advance.

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• Flash drive shows in My Computer but can't be accessed.

  - by Mr_Chimp

  I have a flash drive. When I plug it into my (Dell, Windows XP) computer it appears in My Computer as an empty drive - not a disk with no files on, a drive with no disk in! Double-clicking drive J: gives the message "Please insert a disk into drive J" (I get the same if I type in "J:" to the address bar, too...) Someone suggested going to properties and entering a name but it won't let me type in this box. I've looked in the disk manager and again it appears as an empty drive. I'm thinking that it might be fried...Can anyone give me any advice on how to either fix it or tell for sure that it's gone?

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• what is the purpose of the files in this directory: /var/lib/apt/lists?

  - by Magpie

  linux lubuntu HD4000 intel ivy-bridge 8gb 1600 ram. I am getting a duplicate entry error message from synaptic package manager and it says the problem is there. I am wondering a few things: What this directory is. Whether it safe to simply delete the offending duplicates from there. Whether this is a useful new discovery... Is this where all the packages I have no use for end up and something I can edit to suit my fancy in the long run? It would be nice to be able to reduce the clutter in my package manager. Especially find a way to get rid of all the 32 bit stuff or older versions of programs I have downloaded manually elsewhere. I had meant to post this in linux! So if this is wrong place let me know and I will move it there!

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• Lubuntu 12.10: Icon Display Problems

  - by SlcBullseye

  First off, I would like to let you know that I am new to Linux. I finally decided to give it a try and my first project was installing Lubuntu on an old PC and using it for a media server for my PS3. So, one thing that I noticed right away is that my icons for applications, files, folders, etc...are not visible. If I move my mouse over the name of the application or file (It only works if I move the mouse up from the bottom of the name) then the icon will appear, but if I move my mouse back over any other place on the file the icon will disappear again. Also, if I open a folder sometimes an icon or two will be displayed but the rest won't, and like I said before if I move my mouse over the top of the application or file the icon will disappear. Is there any way to fix this? Is this normal? Or could it be a problem with my hardware? I never had this issue when I was running the last OS (Windows XP). Any help would be greatly appreciated. Remember, I am new to Linux so a thorough explanation would be helpful. Also, if there are any tips, tricks, references, or recommendations any of you have to help me jump in and become more familiar with using Linux that would be great! I'm very interested in taking advantage of the power Linux has. Currently I am studying computer programming so maybe one day I will be able to develop my own Linux distribution.

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