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• How To Use the Restore Partition to Break Into a Mac Running OS X Lion

  - by Justin Garrison

  It’s trivial to break into a Mac using an OS X boot disk, but new Macs use a restore partition for OS installations. Here’s how you can use that partition to reset a user password and break into a Mac. All laptops that come with OS X 10.7 “Lion” or laptops that were upgraded to Lion have a restore partition for easy OS recovery. This easy-to-use recovery partition also opens up hackers to break into your Mac without needing any additional tools. To reset a user password on a Mac with Lion you first need to restart the computer and hold the Command+R (?+R) keys. When the gray Apple logo shows up on the screen you can release the keys. Your computer should automatically boot into the recovery partition. Start by selecting your language and then go to Utilities -> Terminal in the menu. How to Sync Your Media Across Your Entire House with XBMC How to Own Your Own Website (Even If You Can’t Build One) Pt 2 How to Own Your Own Website (Even If You Can’t Build One) Pt 1

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• Generic rule parser for RPG board game rules - how to do it?

  - by burzum

  I want to build a generic rule parser for pen and paper style RPG systems. A rule can involve usually 1 to N entities 1 to N roles of a dice and calculating values based on multiple attributes of an entity. For example: Player has STR 18, his currently equipped weapon gives him a bonus of +1 STR but a malus of DEX -1. He attacks a monster entity and the game logic now is required to run a set of rules or actions: Player rolls the dice, if he gets for example 8 or more (base attack value he needs to pass is one of his base attributes!) his attack is successfully. The monster then rolls the dice to calculate if the attack goes through it's armor. If yes the damage is taken if not the attack was blocked. Besides simple math rules can also have constraints like applying only to a certain class of user (warrior vs wizzard for example) or any other attribute. So this is not just limited to mathematical operations. If you're familiar with RPG systems like Dungeon and Dragons you'll know what I'm up to. My issue is now that I have no clue how to exactly build this the best possible way. I want people to be able to set up any kind of rule and later simply do an action like selecting a player and a monster and run an action (set of rules like an attack). I'm asking less for help with the database side of things but more about how to come up with a structure and a parser for it to keep my rules flexible. The language of choice for this is php by the way.

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• x server startx error?

  - by Chris

  root@thewhitewox:~# startx X.Org X Server 1.7.6 Release Date: 2010-03-17 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-29-server i686 Ubuntu Current Operating System: Linux thewhitewox 2.6.18-238.9.1.el5.028stab089.1 #1 SMP Thu Apr 14 14:06:01 MSD 2011 i686 Kernel command line: quiet Build Date: 20 October 2011 03:05:54PM xorg-server 2:1.7.6-2ubuntu7.10 (For technical support please see ww w.ubuntu . com/support) Current version of pixman: 0.16.4 Before reporting problems, check http: //wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Tue Nov 15 00:50:32 2011 (==) Using config directory: "/usr/lib/X11/xorg.conf.d" Fatal server error: xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory) Please consult the The X.Org Foundation support at http ://wiki.x.org for help. Please also check the log file at "/var/log/Xorg.0.log" for additional information. ddxSigGiveUp: Closing log What does this mean and how can I fix it?

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• TFS SQL Deployment Data Script

  - by Greg

  We are using TFS and SQL 2005 (looking to upgrade to SQL 2012 if that makes a difference). We store our database schema in a Visual Studio Database project (VS 2010). When code is released to live we currently use the Visual Studio Database Project to build a script for all our schema changes. The problem we have been getting is having to alter or add to that script to add/fix data for the deployment. For example if we add a new non-nullable column to an existing table we need to populate that column with data during the insert. Other times we may want to create new records in transactional tables (e.g. assign specific users to a new security access). Do Visual Studio Database Projects have a way to store these scripts that only need to be run once and somehow include them in the build? Does it know which scripts need to be run (for example if we are inserting default data we don't want to do that again a second time)? OR Is there a better way to manage these scripts?

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• Developing with Oracle ADF Mobile and ADF Business Components Backend

  - by Shay Shmeltzer

  It's great to finally have the Oracle ADF Mobile solution out there. If you are not familiar with ADF Mobile - it basically lets you build applications that run on iOS and Android devices using the concepts you already know - components based UI constructions (same idea as JSF), taskflows, data controls, Java and of course JDeveloper. I created one demo that shows how to build an on-device application that gets data from local Java files (that run on the device - yes we do Java on iOS too) - you can see it here. However, one thing many of you might be wondering is how can you get data from your database into these mobile applications. Well if you already built your data access with Oracle ADF Business Components then here is a two step video demo that shows you what to do. The steps are: 1. Expose ADF Business Components as Services 2. Create an ADF Mobile application that consumes the above services with the Web service data control Simple right? That's the whole point of ADF Mobile - making on device application development as simple as possible. Try it out on your device.

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• Minimal Linux distribution with sshd and apt

  - by Sergey Mikhanov

  When I signed up for my Debian Linux VPS hosting and first logged on and invoked ps, there was the only user process running: sshd. As I can see, this was minimal Linux with only two things installed and configured: sshd and apt (plus all dependencies, of course). I want to build (or use existing) similar Linux distro, any advice on how to build (or pick) one? Googling "minimum linux", or "linux with sshd only" usually brings up Debian's netinstall, which is not what I want. Thanks in advance.

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• How do I read multiple lines from STDIN into a variable?

  - by The Wicked Flea

  I've been googling this question to no avail. I'm automating a build process here at work, and all I'm trying to do is get version numbers and a tiny description of the build which may be multi-line. The system this runs on is OSX 10.6.8. I've seen everything from using CAT to processing each line as necessary. I can't figure out what I should use and why. Attempts read -d '' versionNotes Results in garbled input if the user has to use the backspace key. Also there's no good way to terminate the input as ^D doesn't terminate and ^C just exits the process. read -d 'END' versionNotes Works... but still garbles the input if the backspace key is needed. while read versionNotes do echo " $versionNotes" >> "source/application.yml" done Doesn't properly end the input (because I'm too late to look up matching against an empty string).

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• Are there legitimate reasons for returning exception objects instead of throwing them?

  - by stakx

  This question is intended to apply to any OO programming language that supports exception handling; I am using C# for illustrative purposes only. Exceptions are usually intended to be raised when an problem arises that the code cannot immediately handle, and then to be caught in a catch clause in a different location (usually an outer stack frame). Q: Are there any legitimate situations where exceptions are not thrown and caught, but simply returned from a method and then passed around as error objects? This question came up for me because .NET 4's System.IObserver<T>.OnError method suggests just that: exceptions being passed around as error objects. Let's look at another scenario, validation. Let's say I am following conventional wisdom, and that I am therefore distinguishing between an error object type IValidationError and a separate exception type ValidationException that is used to report unexpected errors: partial interface IValidationError { } abstract partial class ValidationException : System.Exception { public abstract IValidationError[] ValidationErrors { get; } } (The System.Component.DataAnnotations namespace does something quite similar.) These types could be employed as follows: partial interface IFoo { } // an immutable type partial interface IFooBuilder // mutable counterpart to prepare instances of above type { bool IsValid(out IValidationError[] validationErrors); // true if no validation error occurs IFoo Build(); // throws ValidationException if !IsValid(…) } Now I am wondering, could I not simplify the above to this: partial class ValidationError : System.Exception { } // = IValidationError + ValidationException partial interface IFoo { } // (unchanged) partial interface IFooBuilder { bool IsValid(out ValidationError[] validationErrors); IFoo Build(); // may throw ValidationError or sth. like AggregateException<ValidationError> } Q: What are the advantages and disadvantages of these two differing approaches?

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• Need hard disk recommendation for linux home server.

  - by neotracker

  Hello, I'm planing to build a little linux homeserver. It will mainly be used for storage and maybe as an media pc. I plan to build a software raid5 with 4 1.5TB or 2TB hard drives. I already decided to use the Western Digital Caviar Green 1.5 TB drive, but then I read about some problems with the WD green series about many drives failing and that they are not recommended for raid anyway. Of course, I couldn't find much facts on the issues so I thought I just ask here ;-) What hard drives would you recommended for a software raid5 setup? As I only need it for storage, the whole thing doesn't have to be too fast. So I prefer a cheap price and silence to great performance.

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• Windows Java-based apps not working

  - by DariusVE

  After updating the Java JRE to 7u25, many Java-based applications not works as usual, the I upgrade Java to 7u45, and still the apps not working. Minecraft start screen not showing, have to press TAB key to select the Run button and press ENTER to run the game. Netbeans IDE it's running, but none it's showing on the screen. Eclipse and JDownloader are working fine. I cannot run the Java Control Panel, it's only shows the Java icon at the taskbar. My System OS: Windows 7 Ultimate SP1 64Bits Java: java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) Client VM (build 24.45-b08, mixed mode, sharing)

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• Emulate Historical Figures i.e. Einstein - Is this possible using linguistic logic for my http://www.ustimeline.com Education System

  - by Johnnylight

  After hearing about the success of IBM's Watson I started thinking perhaps emulating human language is now possible? My goal is to create Virtual Historical characters to represent the main characters in my Adventur-Cation The Great American Adventure program such as Einstein or Crazy Horse. The goal is to build an intelligent system capable of indexing the internet and storing the data using a schema using modern knowledge on linguistic theory (phonemes, morphemes, syntax) to build a system capable to returning a semantically sound response very similar to the response made by the same person if still alive today. The goal would be to use the same engine/system for all characters. Each characters would have their own digital representation and voice, and would organize data differently based on tags/keywords stored about the individual. Imagine a Max Headroom Einstein. Based on the success of Watson, I believe something like this may now be possible. Would be an interesting way to study history and would be a vehicle of entertainment as well. Can anyone confirm if this has already been attempted? Is anyone interested in exploring this using Cognitive Science, Psychology, Artificial Intelligence, Historical data captured on the internet, and Linguistic theory?

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• Depending on fixed version of a library and ignore its updates

  - by Moataz Elmasry

  I was talking to a technical boss yesterday. Its about a project in C++ that depends on opencv and he wanted to include a specific opencv version into the svn and keep using this version ignoring any updates which I disagreed with.We had a heated discussion about that. His arguments: Everything has to be delivered into one package and we can't ask the client to install external libraries. We depend on a fixed version so that new updates of opencv won't screw our code. We can't guarantee that within a version update, ex from 3.2.buildx to 3.2.buildy. Buildy the function signatures won't change. My arguments: True everything has to be delivered to the client as one package,but that's what build scripts are for. They download the external libraries and create a bundle. Within updates of the same version 3.2.buildx to 3.2.buildy its impossible that a signature change, unless it is a really crappy framework, which isn't the case with opencv. We deprive ourselves from new updates and features of that library. If there's a bug in the version we took, and even if there's a bug fix later, we won't be able to get that fix. Its simply ineffiecient and anti design to depend on a certain version/build of an external library as it makes our project difficult in the future to adopt to new changes. So I'd like to know what you guys think. Does it really make sense to include a specific version of external library in our svn and keep using it ignoring all updates?

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• Is there a common programming term for the problems of adding features to an already-featureful program?

  - by Jeremy Friesner

  I'm looking for a commonly used programming term to describe a software-engineering phenomenon, which (for lack of a better way to describe it) I'll illustrate first with a couple of examples-by-analogy: Scenario 1: We want to build/extend a subway system on the outskirts of a small town in Wyoming. There are the usual subway-problems to solve, of course (hiring the right construction company, choosing the best route, buying the subway cars), but other than that it's pretty straightforward to implement the system because there aren't a huge number of constraints to satisfy. Scenario 2: Same as above, except now we need to build/extend the subway system in downtown Los Angeles. Here we face all of the problems we did in case (1), but also additional problems -- most of the applicable space is already in use, and has a vocal constituency which will protest loudly if we inconvenience them by repurposing, redesigning, or otherwise modifying the infrastructure that they rely on. Because of this, extensions to the system happen either very slowly and expensively, or they don't happen at all. I sometimes see a similar pattern with software development -- adding a new feature to a small/simple program is straightforward, but as the program grows, adding further new features becomes more and more difficult, if only because it is difficult to integrate the new feature without adversely affecting any of the large number of existing use-cases or user-constituencies. (even with a robust, adaptable program design, you run into the problem of the user interface becoming so elaborate that the program becomes difficult to learn or use) Is there a term for this phenomenon?

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• What do I need to learn to decide on rename/recompile source package names because of company rebranding?

  - by Roberto Linares

  My company is currently at a rebranding process and the brand names have been used in the sources' package names but these names are only visible to developers who maintain this code so nobody from project management is really interested in changing them considering also that it would imply the recompiling of several old components. What factors do I need to consider when deciding on a change like that? I don't know if I should worry about legal issues or not and if so, how to address this with project management. More background details. I have all the sources and dependencies but since the company rebranding, other development areas have adopted some of the code that needs package name-changing so I cannot take the decision only by myself so I don't make everyone else's code to crash with my core components and I cannot change other areas' code without the permission of those areas' users so yes, my concern is more political than technical. I am going try to coordinate the involved it areas to make the change anyway, since it seems to be the best approach.   Unfortunatelly in my company there's no continuous integration build server so we build our code manually on demand and to get something to production I have to justify the change (even just the package name changing) to QA with an user requirement and some other bureaucratic documentation so that's why I was hesitating the change in first place.

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• libkeybinder error Arch linux

  - by Nihar Sarangi

  I am trying to install a package that depends on python-keybinder and hence on libkeybinder. When I run makepkg for libkeybinder, it starts and after sometime I get the following error: checking for XkbQueryExtension... no configure: error: Could not find XKB ==> ERROR: A failure occurred in build(). Aborting... ==> ERROR: Makepkg was unable to build libkeybinder. I tried checking the pkgbuild but wasn't able to find anything. :( Is there a workaround?

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• Odd SVN Checkout failures occur frequenctly on VMWare virtual machines

  - by snowballhg

  We've recently been experiencing seemingly random SVN checkout failures on our Hudson build system. Google search has failed me; I'm hoping the super user community can help me out :-) We are occasionally receiving the following SVN error when our Hudson build jobs checkout source via the Hudson Subversion plug-in (which uses svn kit): ERROR: Failed to check out http://server/svnroot/trunk org.tmatesoft.svn.core.SVNException: svn: Processing REPORT request response failed: XML document structures must start and end within the same entity. (/svnroot/!svn/vcc/default) svn: REPORT request failed on '/svnroot/!svn/vcc/default' This issue seems to only occur when checking out from our Virtual Machines (Windows XP, Fedora 9, Fedora 12) using Hudson's SVN Plug-in. Systems that use the traditional SVN client seem to work. SVN Server version: 1.6.6 Hudson version: 1.377 Hudson SVN Plugin Version: 1.17 Has anyone dealt with this issue, or have any suggestions? Thanks

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• Command output as string

  - by rik

  I want to get output from command C:\Program Files (x86)\Java\jre7\bin\java.exe" -version as string variable. I tried this way: $out = &"C:\Program Files (x86)\Java\jre7\bin\java.exe" -version but it gives error message: java.exe : java version "1.7.0_05" At line:1 char:9 + $out = & <<<< "C:\Program Files (x86)\Java\jre7\bin\java.exe" -version + CategoryInfo : NotSpecified: (java version "1.7.0_05":String) [], RemoteException + FullyQualifiedErrorId : NativeCommandError Java(TM) SE Runtime Environment (build 1.7.0_05-b05) Java HotSpot(TM) Client VM (build 23.1-b03, mixed mode, sharing) $out variable seems empty. What am I doing wrong?

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• Does my dd-wrt installation support firewall logging?

  - by SpikeX

  I would like to log firewall events. I know this is possible with dd-wrt, but a lot of the documentation I've read states that this isn't possible with a micro installation of dd-wrt (based on BusyBox). I have a Netgear WNDR3700v2 router, and it does have BusyBox installed on it, but I don't know if the dd-wrt build is a micro build or not. How can I find this out, or how can I find out if my router supports firewall logging or not? Currently, if I enable all firewall logging (setting everything to "Enabled" and/or "High" gives me back blank firewall logs - but syslogd is working because I can view other system log messages).

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• Packaging MATLAB (or, more generally, a large binary, proprietary piece of software)

  - by nfirvine

  I'm trying to package MATLAB for internal distribution, but this could apply to any piece of software with the same architecture. In fact, I'm packaging multiple releases of MATLAB to be installed concurrently. Key things Very large installation size (~4 GB) Composed of a core, and several plugins (toolboxes) Initially, I created a single "source" package (matlab2011b) that builds several .debs (mainly matlab2011b-core and matlab2011b-toolbox-* for each toolbox). The control file is just the standard all: dh $@ There is no Makefile; only copying files. I use a number of debian/*.install files to specify files to copy from a copy of an installation to /usr/lib/. The problem is, every time I build the thing (say, to make a correction to the core package), it recopies every file listed in the *.install file to e.g debian/$packagename/usr/ (the build phase), and then has to bundle that into a .deb file. It takes a long time, on the order of hours, and is doing a lot of extra work. So my questions are: Can you make dh_install do a hardlink copy (like cp -l) to save time? (AFAICT from the man page, no.) Maybe I should just get it to do this in the Makefile? (That's gonna b e big Makefile.) Can you make debuild only rebuild .debs that need rebuilding? Or specify which .debs to rebuild? Is my approach completely stupid? Should I break each of the toolboxes into its own source package too? (I'll have to do some silly templating or something, because there's hundreds of them. :/)

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• Can't change read only folder in windows 7

  - by James Drinkard

  I'm trying to run a Spring MVC 2.5 tutorial and when I run the ant script for a deploy, I get this error: deploy: [copy] Copying 2 files to C:\apache-tomcat-7.0.8\webapps\c:\projects\workspace\springapp BUILD FAILED C:\projects\workspace\springapp\build.xml:46: Failed to copy C:\projects\workspace\springapp\war\WEB-INF\web.xml to C:\apache-tomcat-7.0.8\webapps\c:\projects\workspace\springapp\WEB-INF\web.xml due to failed to create the parent directory for C:\apache-tomcat-7.0.8\webapps\c:\projects\workspace\springapp\WEB-INF\web.xml After reviewing the directory: springapp I saw the properties as read-only. No problem I thought as I'm logging in as administrator. However, changing the uac settings, going to a command prompt as admin and then trying to change the properties of the folder with attrib, making me the owner of the folder, changing the security settings etc... did nothing. I can't seem to change this folder to anything. So my question is, how do I change the settings on that folder so ANT can make changes to that folder?

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• Speaking at Sinergija12

  - by DigiMortal

  Next week I will be speaker at Sinergija12, the biggest Microsoft conference held in Serbia. The first time I visited Sinergija it was clear to me that this is the event where I should go back. Why? Because technical level of sessions was very well in place and actually sessions I visited were pretty hardcore. Now, two years later, I will be back there but this time I’m there as speaker. My session at Sinergija12 Here are my three almost finished sessions for Sinergija12. ASP.NET MVC 4 Overview Session focuses on new features of ASP.NET MVC 4 and gives the audience good overview about what is coming. Demos cover all important new features - agent based output, new application templates, Web API and Single Page Applications. This session is for everybody who plans to move to ASP.NET MVC 4 or who plans to start building modern web sites.   Building SharePoint Online applications using Napa Office 365 Next version of Office365 allows you to build SharePoint applications using browser based IDE hosted in cloud. This session introduces new tools and shows through practical examples how to build online applications for SharePoint 2013.   Cloud-enabling ASP.NET MVC applications Cloud era is here and over next years more and more web applications will be hosted on cloud environments. Also some of our current web applications will be moved to cloud. This session shows to audience how to change the architecture of ASP.NET web application so it runs on shared hosting and Windows Azure with same code base. Also the audience will see how to debug and deploy web applications to Windows Azure. All developers who are coming to Sinergija12 are welcome to my sessions. See you there! :)

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• how to uninstall the jdk 1.7.0 in the ubuntu

  - by kaiwii ho

  i encounter a very strange problem,and here is the detail: i'm going to uninstall the jdk 1.7.0.but when i use the rpm to check the appropriate name of the package,it prompt nothing.Anyway,when i use the command java -version,it will prompt the detail of the jdk 1.7.0. below is the detail: root@kaiwiiho:/usr/java# rpm -qa|grep jdk root@kaiwiiho:/usr/java# java -version java version "1.7.0" Java(TM) SE Runtime Environment (build 1.7.0-b147) Java HotSpot(TM) Server VM (build 21.0-b17, mixed mode) root@kaiwiiho:/usr/java# rpm -qa|grep jdk root@kaiwiiho:/usr/java# so what happen?And how can i uninstall it?thx

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• Need guidelines for studying Game Development

  - by ShutterBug

  Hello Everyone, I've completed my graduation in Computer Science and currently working as a Software Engineer in a software company. I was wondering if I can build my career in Game Development. If so, what should be my approach. I've a few questions: Which universities to apply for masters? Preferably in Canada. Scholarships available? How shall I prepare myself before applying which shall give me an edge or advantage over others? I know Java, C#, PHP etc. I dont think these languages will be needed in Game Development. In that case, what languages shall I focus on from now? How do I get some ideas about IDE/Engines/Platform of game development? I'm not talking about flash/browser games. Please suggest me anything you want as I don't know much about it so I'm most likely to miss the most important questions. Feel free to make this thread a starter guide for those interested in perusing their career in game development. Post every relevant information. Thanks in Advance. EDIT: I can see a lot of people suggested to build a small project/game. If so, please suggest me how do I start a small game developing (maybe a clone to some existing small games ie pacman, brick game etc) from start to end.

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• Proper way to encapsulate a Shader into different modules

  - by y7haar

  I am planning to build a Shader system which can be accessed through different components/modules in C++. Each component has its own functionality like transform-relevated stuff (handle the MVP matrix, ...), texture handler, light calculation, etc... So here's an example: I would like to display an object which has a texture and a toon shading material applied and it should be moveable. So I could write ONE shading program that handles all 3 functionalities and they are accessed through 3 different components (texture-handler, toon-shading, transform). This means I have to take care of feeding a GLSL shader with different uniforms/attributes. This implies to know all necessary uniform locations and attribute locations, that the GLSL shader owns. And it would also necessary to provide different algorithms to calculate the value for each input variable. Similar functions would be grouped together in one component. A possible way would be, to wrap all shaders in a own definition file written in JSON/XML and parse that file in C++ to get all input members and create and compile the resulting GLSL. But maybe there is another way that is not so complex? So I'm searching for a way to build a system like that, but I'm not sure yet which is the best approach.

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• scp using a password on the command line

  - by spierepf

  I am trying to write a script that will deploy a build created on my desktop machine (windows/cygwin) to a machine in my test environment (linux). I would like to use scp to copy the build to the target machine. The only account on the target machine is root, and I cannot create a special user for this task. The root user is unable to log in using an ssh key (I suspect that this is configured on the ssh server, but I do not know which configuration options control this). At any rate, I cannot change the configuration of the ssh server. My desktop machine uses Cygwin, and I have ssh installed. What I need is the command-line-fu that will allow me to put the password on the command line. I am aware of the dangers of having a plaintext password in a shell script, but that is not a concern here.

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