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• Ubuntu App Showdown: Commercial applications

  - by Adrian

  Me and a few of my friends decided to create a game for the App showdown. However, we wanted to make a commercial game out of it (for <5$). So the question is: If I want to submit a commercial app, what exactly do I have to do? We would be willing to provide it as open source software but want to sell it in USC anyway. How should I submit the app if we can do that? (Note: we would only open source if it's required, but would prefer to only share the source with the judges. Is that also possible?). Also: If I have to upload the source code to the PPA and let it build by ubuntu's build service: How do I do that with Mono-apps? It worked perfectly for other projects where I had CMakeFiles and stuff like that. But for Mono, I only have a MonoDevelop project file - how to do that right? Thanks

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• Using Quickly for text-heavy app

  - by Kevin

  I am trying to create a small app that displays documentation. When it is run, the application window will display a main menu with buttons labeled 'Document 1', 'Document 2', etc. If a user clicks on one of those buttons, the text from the corresponding document will be displayed in the window. Very basic. The text documents range in length from 1000 to 5000 words, and they need basic formatting (bold, italic, maybe one or two font choices). My question is this: what is the best way to store and display long blocks of formatted text, using Quickly? There seems to be a few options: (1) I could load the text blocks into long python strings, (2) I could load the text from text files, or (3) I could somehow copy and paste the formatted text into Glade. In the first two options, I'm not sure how I would format the text (add italic and bold, for instance) once it was loaded. I have experience with PHP/MySQL/HTML/CSS/Javascript, but I'm new to Python. Any help would be appreciated.

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• Can an app in opt/extras install themeable icons in /usr/share

  - by Peter Levi

  My application Variety Wallpaper Changer runs from /opt/extras and uses an indicator icon. I would like to make this indicator icon theme-specific. As far as I understand the standard way is to install named icons into /usr/share/icons with xdg-icon-resource at installation time (Am I right about this?). I have two questions regarding this: Variety installs and runs from /opt/extras.ubuntu.com. Is it acceptable for it to install icons in /usr/share using xdg-icon-resource or is there something else I can do to have theme-specific icons without special-casing themes and dynamically selecting the icon in the code? Variety is packaged using Quickly (and I'm myself a newbie at packaging) - how can I configure it to install theme-specific named icons at installation time?

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• Breaking The Promise of Web Service Interoperability

  The promise of web service interoperability is achievable if certain technical and non-technical issues are dealt with properly. As the world gets smaller and smaller thanks to our growing global economy the need for security is increasing. The use of security is vital in the transferring of data from one server to another. As new security standards and protocols are created, the environments for web service hosts and clients must be in sync so that they can communicate on the same standard and protocols. For example, if a new protocol x can only be implemented on computers built after 2010 then all computers built prior to 2010 will not be able to connect to any web service hosts that only use this protocol in its security policy. If both the host and client of a web service cannot communicate using a set of common standards and protocols then web services are not available to these clients thus breaking the promise of interoperability. Another limiting factor of web services is governmental policies and regulations. I have experienced this first hand last year when I had to work on a project that dealt with personally identifiable information (PII) regarding US and Canadian Citizens. Currently the Canadian government regulates that any data pertaining to Canadian citizens must be store in Canada only. The issue that we had was that fact that we are a US based company that sometimes works with Canadian PII as part of a service that we provide. As you can see we are US based company and dealing with Canadian Data, so we had to place a file server inside the border of Canada in order for us to continue working for our Canadian customers.

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• Should extension scripts be run in a sandbox?

  - by Cubic

  In particular, this is about game extensions written in lua (luajit-2.0). I was contemplating whether I should restrict what these scripts can do, and arrived at the conclusion that I probably shouldn't: It's hard to get right. Sounds silly, but chances are my sandbox is gonna end up leaky anyways. The only benefit I could think of would be giving users some sense of security when running third party scripts. The disadvantages would be that it's just incredibly annoying for extension writers. That is, for now, myself (game content will be mostly scripted). The reason I'm asking this now before I actually have anything presentable is that adding a sandbox early on is easy, but would impose said annoying restrictions on myself too. However if I first go on with it and then later decide I do need a sandbox after all, I'm gonna run into problems (I'd either have to rewrite the scripts that are already there, or introduce some form of trust management system which seems to be more trouble than it's worth).

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• Should a poll framework be closed sourced

  - by samquo

  I was having a chat with a coworker who is working on a polling app and framework. He was asking technical questions and I suggested he open source the application to get more quality opinions from developers who are interested in this problem and are willing to give it heavy though. He has a different point of view which I think is still valid so I want to open this question for discussion here. He says he believes something like a polling framework should not be open sourced because it will reduce its security and validity as people reveal loopholes through which they can cheat. Can't say I completely disagree. I see a somewhat valid point there, but I always believed that solutions by a group of people are almost always better than a solution thought by a single person asking a small number of coworkers, no matter how smart that person is. Again I'm willing to accept that maybe some types of applications are different. Does anyone have an argument in his favor? I'd really like to present your responses to him.

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• Launchpad ppa supporting multiple versions of Ubuntu

  - by unknownone

  Is it possible for a launchpad ppa to support multiple Ubuntu versions such as 10.04 and 12.04 when the package itself was built on a 12.04 machine? When trying to add the ppa to a older machine, it gives an error saying it was made on a 12.04 system and that it could not install. I'd like sudo get-apt-install my-app to work with both 10.04 and 12.04, and I am new to packaging and ppa's so I do not know if anything like this exists. Any help would be appreciated, thanks!

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• How does session middleware generally verify browser sessions?

  - by BBnyc

  I've been using session middleware to build web apps for years: from PHP's built-in session handling layer to node's connect session middleware. However, I've never tried (or needed) to roll my own session handling layer. How would one go about it? What sort of checks are necessary to provide at least some modicum of security against HTTP session highjacking? I figure setting a cookie with a token to keep track of the session, and then perhaps some check to see that the originating IP address of the session doesn't change and that the client browser software remains consistent. Hoping to hear about current best-practices...

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• which is the best CMS for building a Video tutorial website? [duplicate]

  - by Rajesh Sankar R

  This question already has an answer here: How to choose a CMS system for a small web site? 4 answers I am planning on setting up a website where I will be posting "how to or training videos" for various softwares. There will be several training videos under a single topic. And there will be several topics under a single software training. Similar to lynda.com but in a small scale. Can you suggest me a CMS for the job? Initially I am planning on hosting videos on YouTube and linking them to my website. But, I will be moving to my own hosting later on. It must be customizable, scalable, and most of all OPEN SOURCE

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• Authenticating users for a website

  - by MCB

  I'm working on a website and I want to validate that an individual is an employee at one of a large number of companies (probably using their company's email address, which I don't know before hand). The idea being some users are the general public and others are from these companies. And I need some way to authenticate that the users claiming to be employees are being honest while still having a friendly enough UI. I did an informal survey of people I know and the domains and emails will match in a majority of cases but they might not always match exactly so you might have a company with a website foo.com and an email [email protected] (although foobar.com did redirect back to foo.com). And while I can easily check that I'm not sure what other variations might be out there (maybe fooLA.com and email [email protected], etc.)

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• How Can Someone With Minimum Programming Experience Publish an App of an Existing Program not found in the Software Centre?

  - by Brenton Horne

  There's a free mathematics software that I would like to see in Ubuntu Software Centre, called, 'Sage.' I have minimal experience in programming, so I'm basically here asking if someone could either tell me how to accomplish this without said instructions being completely over my head or if someone could do it for me. For further information here's the sage homepage: http://sagemath.org/ and the .tar.lzma file for its installation is ~500MB and it takes around 2.2 GB on the HDD when installed, I found at least on 32 bit i386 Ubuntu 12.04 LTS. Any help will be greatly appreciated!

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• How to handle editing a large file for a non-technical user

  - by Luke

  I have a client who is given a tab delimited .txt file containing hundreds of thousands of rows. I have a user story as follows: As a user I want to take the text file and add a new value at the end of each line which contains the concatenated value of two of the columns. for example if the file read text_one text_two I need to output the following (preferably to a .txt file) text_one text_two text_onetext_two My first approach was to ask the vendor supplying the file to do the concatenation before providing the file, the easiest way to solve a problem is to eliminate it right? however they are very uncooperative and have point blank refused. I've looked at building a simple javascript application that does this client side so a non-technical user could select the file using a file selector. This approach has a few problems The file could be over a GB in size and so can't be loaded straight into memory, I've tried and the browser crashes There is no means to write a file in javascript so I'd need to output the content to the screen and have the user save it (somehow) I was thinking if I could get around the filesize limitations I could just output the edited content to the page and have the user save the page as a .txt file, however I think there is a better way than using javascript that will still accommodate the users lack of technical know-how. Please consider this question to be stack agnostic, but bear in mind that a nice little shell script or python script would be deemed unsuitable for a non technical user unless there is a way of "packaging" it nicely for a non-technical user. Updates The file is too large to open in excel. The process needs to be run weekly, but it doesn't require scheduling or automation...(yet)

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• How to provide value?

  - by Francisco Garcia

  Before I became a consultant all I cared about was becoming a highly skilled programmer. Now I believe that what my clients need is not a great hacker, coder, architect... or whatever. I am more and more convinced every day that there is something of greater value. Everywhere I go I discover practices where I used to roll my eyes in despair. I saw the software industry with pink glasses and laughed or cried at them depending on my mood. I was so convinced everything could be done better. Now I believe that what my clients desperately need is finding a balance between good engineering practices and desperate project execution. Although a great design can make a project cheap to maintain thought many years, usually it is more important to produce quick fast and cheap, just to see if the project can succeed. Before that, it does not really matters that much if the design is cheap to maintain, after that, it might be too late to improve things. They need people who get involved, who do some clandestine improvements into the project without their manager approval/consent/knowledge... because they are never given time for some tasks we all know are important. Not all good things can be done, some of them must come out of freewill, and some of them must be discussed in order to educate colleagues, managers, clients and ourselves. Now my big question is. What exactly are the skills and practices aside from great coding that can provide real value to the economical success of software projects? (and not the software architecture alone)

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• Registering as developer on Google Play store

  - by ChosenOne

  I am registering as a Developer to sell paid applications on the Google Play store and have run into a slight issue: After I paid, I clicked on "Setup merchant details" link. I filled out the business address section, but in the "Public contact" section, Google says this: How can your customers get in touch with you? This information will be made available to your customers when they make a purchase. I work from home. I do not want customers knowing my home address, nor do I want it displayed anywhere online or even accessible by anyone. Should I just enter NA in each of the following fields? Surely Google understands that we have a right to keep such things private? How can I get around this while not getting my account suspended or risk not being approved?

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• Where to start studying for developing ubuntu?

  - by Mad-scientist

  Hi am Computer Science student currently in college and very interested in developing open source software especially ubuntu.Is there a one stop go-to place for reading about developing ubuntu. For example I scoured through the official tutorial and documentation of Python and I was good to go.I could write useful applications. Is there any equivalent for Ubuntu or unity? I tried downloading the alpha 2,put kept crashing every 5 minute. I was told in IRC,it was due to some Xorg stack change. Now I cant even look at new Unity,let alone help develop it. Any help or guidance appreciated.

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• PHP and performance

  - by Naif

  I always hear that PHP is for medium and small websites whereas .NET and Java for enterprise applications. My question is about PHP. Why is PHP not a good option for enterprise web applications? Is it because if the web application becomes bigger then PHP will be slower as it is an interpreted language? I know that corporate world will choose .NET or J2EE because of the integration with their products and because of back end services, etc. However, if we just have PHP for building sites and web applications then how can we use it to perform well with big sites? In short, Is there a relationship between the performance of PHP and the size of the website? What are the factors that make PHP not appropriate option for big sites?

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• I'm hoping to start an online supermarket and needs advice on open source shopping cart software and applications..

  - by Betterman Simidi

  I have been researching on both open source software and off-the-shelf software for an online supermarket project in Africa. I have now narrowed by search to X-cart and the PHP based PrestaShop shopping carts. My plan is to acquire an open source shopping cart either by purchasing or as a free open source cart and hire a local developer to customize it to our local needs. I have been doing the demo for x-cart for three weeks now and had thought it might work best for us but after going through the 600 page manual and I'm concerned with how far it can be localized. Yesterday i was looking at the possible Prestashop free open source cart and i seem to like the back-end. Didn't like the back-end for Magento much but from reviews conducted by third-parties they seem to recommend it. I'm now wondering whether i should have a developer start the whole project from scratch, or use an open source software such us PrestaShop or get x-cart which can then be customized. Note that my store will have thousands of products and services including groceries and so i want something that can handle upto 500,000 products and over. Kindly advice. 93276

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• How could a human factors degree help a computer scientist?

  - by Bob Dole

  I'm wrapping up a masters in CS and already have half the credit hours needed for a degree in Human Factors. I just recently discovered how useful understanding about cognition can help someone that creates user interfaces and am thirsty for more knowledge in the area. For me, it seems that having both a masters in Human Factors and CS would be very marketable but would there be jobs out there that would allow me to apply both? Meaning what I would really like to do is take the requirements for some application, apply different Human Factors theories( GOMS, CE+ ) to developing the interface, maybe do cognitive walk through with users to optimize the UI, then develop the application. Do jobs out there exist like this? The reason I ask, is because I'm wondering if most places just want you to be either a Human Factors Expert or a Developer but not both.

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• Error accessing Gio.Gsettings on application made in quickly

  - by Zane Swafford

  I am trying to develop an application using the quickly/pygtk stack. I got my Gsettings schemas all set up in ~/app-name-here/data/glib-2.0/schemas/net.launchpad.app-name-here.gschema.xml correctly and I am able to access it just fine in my preferences dialog window that is located in ~/app-name-here/app-name-here/PreferencesDialog.py via from gi.repository import Gtk, Gio settings = Gio.Settings("net.launchpad.app-name-here") settings.get_boolean('notify') settings.set_boolean('notify', True) but when I try to check the value of one of my settings in a file located in ~/app-name-here/bin/Daemon.py that I use as a script to run in the background and send notifications by a similar method of from gi.repository import Gio settings = Gio.Settings("net.launchpad.app-name-here") settings.get_boolean('notify') it fails at the line that says settings = Gio.Settings("net.launchpad.app-name-here") and spits out a nasty error (Daemon.py:26100): GLib-GIO-ERROR **: Settings schema 'net.launchpad.app-name-here' is not installed Despite the fact that I can open up dconf-editor and find the settings under net/launchpad/app-name-here. Any thoughts?

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• SQLSaturday #69 - Philly Love

  - by Mike C

  Thanks to the Philly SQL Server User Group (PSSUG) and to everyone who attended SQLSaturday #69 in the City of Brotherly Love yesterday. It was a great event with a lot of great people. My presentations are available for download at the links below: http://www.sqlsaturday.com/viewsession.aspx?sat=69&sessionid=3333 http://www.sqlsaturday.com/viewsession.aspx?sat=69&sessionid=3334 I just went through my speaker evaluations, and I'm happy to report the response was pretty positive across the...(read more)

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• What kind of an IT or programming job can a college student get part time?

  - by Alex Foster

  I'm a college student with a full load of classes and i need some extra money to cover some of my expenses. I love anything and everything to do with computers. I don't know how to program but have build computers before and know how windows works. I would call myself a power user. My question is, what kind of a job can someone like me get with effort? If there are some more skills that i can pick up that would benefit in getting the foot in the door i would love to hear about them. The only limitation i have is that i can't work very late in the evening most days due to classes. But usually in the morning my time is available for work. I will appreciate all answers i receive. Thank you for your help.

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• How to add a holding page in front of a domain

  - by Jason Bradberry

  I have set up a holding page to announce a new version of a website coming soon. I wanted people to still be able to access the original site, so my approach was to place the holding page in the root folder on the server, and move the original site to a subfolder and link to it from the holding page. However, on testing this setup it appears to have hurt the SEO placing of the website. Is there a better approach to this? I'm a bit stumped as I want both to share the same URL.

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• Good design for a simple site that contains a blog

  - by bporter

  What is a good design for a simple web site with mostly static pages and a blog? I am helping a friend build this for their small business. We are looking for a simple approach that can be implemented fairly quickly. (I am a programmer and can help with coding, hosting, etc.) One option is to use a site like virb, which lets you choose from one of their themes and build a site pretty easily. You can also include a blog. They host the site for a pretty low monthly rate. I recommended this option, but my friend wants a design that is unique and custom. So, I took one of the themes and started modifying the HTML and CSS. This might still be a good option, but... ...If we are going to greatly modify it, why not just create the static pages from scratch and use something like Wordpress for the blog. Is this a good option? It looks fairly easy to integrate Wordpress with a site so that the design and behavior are really cohesive. Is this a good idea? Do you recommend any other approaches?

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• How would you TDD the functionality of getting the corresponding process of a running windows service?

  - by Matt Spinelli

  Purpose Over the last year or more I've been learning unit testing via books I've read recently like The Art of Unit Testing, Working Effectively with Legacy Code, and others. I've also been using unit tests, mocking frameworks, and the like, periodically at work and definitely see the value. However, I'm still having a hard time wrapping my mind around TDD (as opposed to TAD) when the situation calls for code that is gong to mostly use external API calls. Problem to solve Get the process associated with a windows service using the service name. example: Function GetProcess(ByVal serviceName As String) As Process Rules Show each major iteration in production & test code using TDD No need to see any other code or configuration that is required to get things to run. Just curious about the interfaces, concrete classes, and test methods. C# or VB.NET Must use the .Net framework regarding services/processes (i.e. System.Diagnostics.Process) Test Frameworks: Nunit or MSTest Isolation Frameworks: Moq, Rhino Mock, or Microsoft Moles Must write true unit tests (no integration tests) Additional notes As far as I can tell there are two approaches design wise. Use an Inversion of Control approach along with using the Adapter and/or Facade patterns to wrap the underlying .net framework objects dealing with processes and services. Keep the .net framework code in the class containing the Get Process method and use code detouring (interception) via Microsoft Moles to isolate the hard dependencies from the method under test.

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• Writing drivers for a printer?

  - by user828584

  My goal is to be able to fax 20 page pdf documents for free. I've looked online, and there are some free fax services, but all of them have their limits. I do have an old fax machine, but the documents that need to be faxed are on the computer, and to print them would be far from free. Unfortunately, the only way to send a fax with the machine is by scanning it. What's strange is that it can scan to the computer and print from it, but it won't fax from it... :(. Is it possible to write something (preferably C#, but it's going to take some learning anyway) that will allow me to send a fax from the computer? I have very little software experience, and none in anything like this, so I have no idea where to start. If it is possible, where can I find all the information needed to write the program?

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