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  • The PATRIOT Act and how it relates to the Internet

    The subject of the Internet and anonymity is a very sticky situation for me because I primarily develop web applications for a living.  As a part of my job I have to track users as they enter, navigate and leave specific applications. The level of tracking depends on where the user goes within a website.  The basic information that I capture includes the user’s IP address, browser type, operating system, the date/time they entered the site and the URL from which the user was referred to the website. In addition to the custom logging that is placed on the website, web servers also have methods of logging built-in as well. Web server logging allows companies to have a central repository to store all user activity across the entire server. Not to mention that they can also create a central repository that allows multiple servers to store log files in one location. This allows users to be tracked across multiple servers as they browse website located on a specific collection of servers that host multiple websites. All this being said there are methods to attempt to protect your privacy by using proxy servers and increasing your browser security levels, but that will only limit the amount of logging not eliminate it. I have to agree with Traynor when he states that the PATRIOT Act eviscerates the constitutional protections of anonymous communication on the Internet. Therefore, given the recent passage and implementation of the PATRIOT Act, the constitutional guarantees of the right to anonymity have been severely compromised. I think that the PATRIOT Act is a direct violation of our first amendment rights because it allows for the government to directly monitor any and all activity on the internet including communications, usage, and transactions that can occur.  This opens the door to scrutiny and persecution of individuals who are not in line with the government’s beliefs and actions. If England had this type of monitoring capabilities during the revolutionary war, I believe it would have been almost impossible to succeed from England.

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  • Force apt to remove all emacs*

    - by wishi
    Hi! I have a bug-problem with the apt-packages of emacs: >>Error occurred processing debian-ispell.el: File error (("Opening input file" "no such file or directory" "/usr/share/emacs23/site-lisp/dictionaries-common/debian-ispell.el")) >>Error occurred processing ispell.el: File error (("Opening input file" "no such file or directory" "/usr/share/emacs23/site-lisp/dictionaries-common/ispell.el")) >>Error occurred processing flyspell.el: File error (("Opening input file" "no such file or directory" "/usr/share/emacs23/site-lisp/dictionaries-common/flyspell.el")) emacs-install: /usr/lib/emacsen-common/packages/install/dictionaries-common emacs23 failed at /usr/lib/emacsen-common/emacs-install line 28, <TSORT> line 30. dpkg: error processing emacs23-lucid (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of emacs: emacs depends on emacs23 | emacs23-lucid | emacs23-nox; however: Package emacs23 is not installed. Package emacs23-lucid which provides emacs23 is not configured yet. Package emacs23-nox which provides emacs23 is not installed. Package emacs23-lucid is not configured yet. Package emacs23-nox is not installed. dpkg: error processing emacs (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: emacs23-lucid emacs E: Sub-process /usr/bin/dpkg returned an error code (1) In fact I would be satisfied with just emacs23-nox, a couple of plugins - from apt. But I can neither --purge nor --purge reinstall, nor remove the packages. It always processes until this certain bug. I did some google-searching, found some stuff on Launchpad suggesting: sudo apt-get install --reinstall --purge emacsen-common But this is the same... so I hope there a way to tell app to just remove everything releated to emacs, and to start from scratch again? Thanks, Marius

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  • Unity3d: calculate the result of a transform without modifying transform object itself

    - by Heisenbug
    I'm in the following situation: I need to move an object in some way, basically rotating it around its parent local position, or translating it in its parent local space (I know how to do this). The amount of rotation and translation is know at runtime (it depends on several factors, the speed of the object, enviroment factors, etc..). The problem is the following: I can perform this transformation only if the result position of the transformed object fit some criterias. An example could be this: the distance between the position before and after the transformation must be less than a given threshold. (Actually the conditions could be several and more complex) The problem is that if I use Transform.Rotate and Transform.Translate methods of my GameObject, I will loose the original Transform values. I think I can't copy the original Transform using instantiate for performance issues. How can I perform such a task? I think I have more or less 2 possibilities: First Don't modify the GameObject position through Transform. Calculate which will be the position after the transform. If the position is legal, modify transform through Translate and Rotate methods Second Store the original transform someway. Transform the object using Translate and Rotate. If the transformed position is illegal, restore the original one.

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  • If You Include the Groovy Editor...

    - by Geertjan
    ...in a NetBeans RCP application, what additional JARs will you need to include for the Groovy Editor to work? Leaving aside the debate on the current state & quality of the NetBeans Groovy Editor, so, assuming you need the Groovy support that the NetBeans Groovy Editor provides, you would check the Groovy Editor checkbox in the Project Properties dialog of your application: As you can see, however, the Groovy Editor depends on other modules, some of which, in turn, depend on yet other modules, and so on. So, I clicked the "Resolve" button above and then created a ZIP distribution, to see which additional JARs had been included. Until that point, I had only been using the "platform" cluster, which means that absolutely everything found in the ZIP's "ide" cluster and "java" cluster have only been included so that the Groovy Editor could be included, i.e., all thanks to clicking the "Resolve" button above. Let's first look at what that means for the "java" cluster: That's not so bad and kind of a side effect of Groovy being Java, i.e., a lot of Java functionality is needed. Now let's look at the "ide" cluster: So, in answer to the original question, if all you want in your NetBeans Platform application, in terms of editor functionality, is the Groovy Editor, then you have a pretty high price to pay. At the very least, I would have assumed that the project support JARs and the debugger support JARs would not be so tightly coupled with the Groovy Editor. That would be a cool thing to separate out from the editor support.

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  • Distinction between API and frontend-backend

    - by Jason
    I'm trying to write a "standard" business web site. By "standard", I mean this site runs the usual HTML5, CSS and Javascript for the front-end, a back-end (to process stuff), and runs MySQL for the database. It's a basic CRUD site: the front-end just makes pretty whatever the database has in store; the backend writes to the database whatever the user enters and does some processing. Just like most sites out there. In creating my Github repositories to begin coding, I've realized I don't understand the distinction between the front-end back-end, and the API. Another way of phrasing my question is: where does the API come into this picture? I'm going to list some more details and then questions I have - hopefully this gives you guys a better idea of what my actual question is, because I'm so confused that I don't know the specific question to ask. Some more details: I'd like to try the Model-View-Controller pattern. I don't know if this changes the question/answer. The API will be RESTful I'd like my back-end to use my own API instead of allowing the back-end to cheat and call special queries. I think this style is more consistent. My questions: Does the front-end call the back-end which calls the API? Or does the front-end just call the API instead of calling the back-end? Does the back-end just execute an API and the API returns control to the back-end (where the back-end acts as the ultimate controller, delegating tasks)? Long and detailed answers explaining the role of the API alongside the front-end back-end are encouraged. If the answer depends on the model of programming (models other than the Model-View-Controller pattern), please describe these other ways of thinking of the API. Thanks. I'm very confused.

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  • Failing to upgrade to linux-image-3.0.0-26-generic

    - by Dan Lee
    When I try to upgrade linux-image-3.0.0-26-generic I get following problems: dpkg-deb (subprocess): data: internal bzip2 read error: 'DATA_ERROR' dpkg-deb: error: subprocess <decompress> returned error exit status 2 dpkg: error processing /var/cache/apt/archives/linux-image-3.0.0-26-generic_3.0.0-26.42_amd64.deb (--unpack): short read on buffer copy for backend dpkg-deb during `./lib/modules/3.0.0-26-generic/kernel/drivers/scsi/fnic/fnic.ko' No apport report written because MaxReports is reached already Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.0.0-26-generic /boot/vmlinuz-3.0.0-26-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.0.0-26-generic /boot/vmlinuz-3.0.0-26-generic Errors were encountered while processing: /var/cache/apt/archives/linux-image-3.0.0-26-generic_3.0.0-26.42_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: dpkg: dependency problems prevent configuration of linux-image-generic: linux-image-generic depends on linux-image-3.0.0-26-generic; however: Package linux-image-3.0.0-26-generic is not installed. I don't know why this happens to me; earlier upgrades always worked without problems. Does anybody know how to fix this?

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  • How To Backup Of MySQL Database Using PhpMyAdmin

    - by Jyoti
    It is very important to do backup of your MySql database, you will probably realize it when it is too late. A lot of web applications use MySql for storing the content. This can be blogs, and a lot of other things. When you have all your content as html files on your web server it is very easy to keep them safe from crashes, you just have a copy of them on your own PC and then upload them again after the web server is restored after the crash. All the content in the MySql database must also be backed up. If you have spent a lot of time making the content and it is only stored in the Mysql server, you will feel very bad if it gets lost for ever. Backing it up once every month or so makes sure you never loose too much of your work in case of a server crash, and it will make you sleep better at night. It is easy and fast, so there is no reason for not doing it. Step 1: Log into phpMyAdmin on your server. Step2: You can select the database that you would like to backup from the drop-down menu called Database. Step 3: A new page will be loaded in phpMyAdmin showing the selected database. In order to proceed with the backup click on the Export tab. Step 4: The options that you should select apart from the default ones are Save as file which will save the file locally to your computer in an .sql format and Add DROP TABLE which will add the drop table functionality if the table already exists in the database backup as shown below. Step 5: Click on the Go button to start the export/backup procedure for your database. A download window will pop up prompting for the exact place where you would like to save the file on your local computer. It is possible that the download starts automatically. This depends on your browser’s settings.

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  • 2D platformers: why make the physics dependent on the framerate?

    - by Archagon
    "Super Meat Boy" is a difficult platformer that recently came out for PC, requiring exceptional control and pixel-perfect jumping. The physics code in the game is dependent on the framerate, which is locked to 60fps; this means that if your computer can't run the game at full speed, the physics will go insane, causing (among other things) your character to run slower and fall through the ground. Furthermore, if vsync is off, the game runs extremely fast. Could those experienced with 2D game programming help explain why the game was coded this way? Wouldn't a physics loop running at a constant rate be a better solution? (Actually, I think a physics loop is used for parts of the game, since some of the entities continue to move normally regardless of the framerate. Your character, on the other hand, runs exactly [fps/60] as fast.) What bothers me about this implementation is the loss of abstraction between the game engine and the graphics rendering, which depends on system-specific things like the monitor, graphics card, and CPU. If, for whatever reason, your computer can't handle vsync, or can't run the game at exactly 60fps, it'll break spectacularly. Why should the rendering step in any way influence the physics calculations? (Most games nowadays would either slow down the game or skip frames.) On the other hand, I understand that old-school platformers on the NES and SNES depended on a fixed framerate for much of their control and physics. Why is this, and would it be possible to create a patformer in that vein without having the framerate dependency? Is there necessarily a loss of precision if you separate the graphics rendering from the rest of the engine? Thank you, and sorry if the question was confusing.

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  • Differentiating between Hard and Soft Dependencies - Fedora Yum [closed]

    - by Sujit
    I will ask this with an example - I have installed gnash-plugin on fedora 64 bit with Yum. It pulled in following packages - Installing : agg-2.5-9.fc13.x86_64 1/6 Installing : gtkglext-libs-1.2.0-10.fc12.x86_64 2/6 Installing : boost-thread-1.44.0-7.fc14.x86_64 3/6 Installing : boost-date-time-1.44.0-7.fc14.x86_64 4/6 Installing : 1:gnash-0.8.8-4.fc14.x86_64 5/6 Installing : 1:gnash-plugin-0.8.8-4.fc14.x86_64 6/6 Now, I tested the plugin and I didn't like it. I want to remove all these above packages which got installed with the plugin as I don't longer going to need them. How can I do this? I checked remove-with-plugin for yum but it pulls in all the packages which are currently depending on the packages. I understand the thought process behind showing what packages are getting affected - but I am wondering if there is any way of looking at the history with what package got installed when I installed a certain package. When gnash-plugin wasn't there firefox was running fine with but after I installation firefox is now depends on this new plugin. Has any one worked on differentiating hard-dependencies(hard means the program will break if that package is not there) and soft-dependencies ( soft means the program may not get affected fatally) ?

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  • Advantages of Singleton Class over Static Class?

    Point 1) Singleton We can get the object of singleton and then pass to other methods. Static Class We can not pass static class to other methods as we pass objects Point 2) Singleton In future, it is easy to change the logic of of creating objects to some pooling mechanism. Static Class Very difficult to implement some pooling logic in case of static class. We would need to make that class as non-static and then make all the methods non-static methods, So entire your code needs to be changed. Point3:) Singleton Can Singletone class be inherited to subclass? Singleton class does not say any restriction of Inheritence. So we should be able to do this as long as subclass is also inheritence.There's nothing fundamentally wrong with subclassing a class that is intended to be a singleton. There are many reasons you might want to do it. and there are many ways to accomplish it. It depends on language you use. Static Class We can not inherit Static class to another Static class in C#. Think about it this way: you access static members via type name, like this: MyStaticType.MyStaticMember(); Were you to inherit from that class, you would have to access it via the new type name: MyNewType.MyStaticMember(); Thus, the new item bears no relationships to the original when used in code. There would be no way to take advantage of any inheritance relationship for things like polymorphism. span.fullpost {display:none;}

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  • Load order in XNA?

    - by marc wellman
    I am wondering whether the is a mechanism to manually control the call-order of void Game.LoadContent() as it is the case with void Game.Draw(GameTime gt) by setting int DrawableGameComponent.DrawOrder ? except the order that results from adding components to the Game.Components container and maybe there exists something similar with Game.Update(GameTime gt) ? UPDATE To exemplify my issue consider you have several game components which do depends to each other regarding their instantiation. All are inherited from DrawableGameComponent. Now suppose that in one of these components you are loading a Model from the games content pipeline and add it to some static container in order to provide access to it for other game components. public override LoadContent() { // ... Model m = _contentManager.Load<Model>(@"content/myModel"); // GameComponents is a static class with an accessible list where game components reside. GameComponents.AddCompnent(m); // ... } Now it's easy to imagine that this components load method has to precede other game components that do want to access the model m in their own load method.

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  • How do I fix broken packages in 12.04? [closed]

    - by Philip Gray
    Possible Duplicate: Fixing Broken Packages I am trying to install the nautilus-actions-extra package via synaptic. When I do synaptic advises me that I have broken packages. I have followed How do I locate and remove Broken Packages that I have installed? but when I select the Status category, I do not have a 'Broken Dependencies' option. When I click on the 'Broken' item in the Filter category nothing is displayed. I am using Ubuntu 12.04LTS. What can I do to resolve this? These are my terminal responses: $ sudo apt-get install nautilus-actions-extra Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies. nautilus-actions-extra : Depends: nautilus-gksu but it is not installable E: Unable to correct problems, you have held broken packages. $ sudo apt-get check Reading package lists... Done Building dependency tree Reading state information... Done

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  • Object behaviour or separate class?

    - by Andrew Stephens
    When it comes to OO database access you see two common approaches - the first is to provide a class (say "Customer") with methods such as Retrieve(), Update(), Delete(), etc. The other is to keep the Customer class fairly lightweight (essentially just properties) and perform the database access elsewhere, e.g. using a repository. This choice of approaches doesn't just apply to database access, it can crop up in many different OOD scenarios. So I was wondering if one way is preferable over the other (although I suspect the answer will be "it depends")! Another dev on our team argues that to be truly OO the class should be "self-contained", i.e. providing all the methods necessary to manipulate and interact with that object. I personally prefer the repository approach - I don't like bloating the Customer class with all that functionality, and I feel it results in cleaner code having it elsewhere, but I can't help thinking I'm seriously violating core OO concepts! And what about memory implications? If I retrieve thousands of Customer objects I'm assuming those with the data access methods will take up a lot more memory than the property-only objects?

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  • How to restore curropted installation?

    - by nightweels
    I have a laptop with dead battery that when there is no current connected to it turns critical so fast and in the energy management in ubuntu, when the battery is critical, there are 2 options: shutdown and hibernate witch is in grey (unclickable), so I have no choice but to chose immediate shutdown, there is no standby even if it is an option in the screen behavior. An immediate shutdown (and I mean by immediate the one that we use when we ended using the computer) happened while I was installing a program called quickly, so after the power was restored, I tried to reinstall the program then I get this translated message: An untreatable error occurred: It seems there is a software error in aptdaemon, the program that lets you install and remove software and any other task related to package management. details: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 968, in simulate trans.unauthenticated = self._simulate_helper(trans) File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1092, in _simulate_helper return depends, self._cache.required_download, \ File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download pm.get_archives(fetcher, self._list, self._records) SystemError: E:I wasn't able to locate a file for the libpng12-dev package. This might mean you need to manually fix this package.

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  • still about perl vs python but (to me) slightly different from what has been asked [closed]

    - by B Chen
    Being a newbie to coding, I read from this site that Perl is still as viable as it has been, while Python, quoted from someone else's post, is good but just "snake oil" (not sure what this refers to exactly though). So from the responses in that post, I got the gist that Perl is good and worthy to learn. My question is - pardon me for phrasing it in this "non-programmer's" way - Which one should I learn FIRST? (I am actually currently learning R) Here below is the background info - (a) I will be using it mostly for data mining and statistics analysis (b) Will there be this "first" and "later" issue with learning either Perl or Python? That is, after I become competent with one language, would there be a need to learn the second one (for a similar task??) (c) If there should be circumstances where I must learn the second one, would learning Perl FIRST be better than learning Python? I hope to learn as much from exchanging info here, so please help provide with more than just "it depends" type of info. Great many thanks to all who choose to respond to my query.

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  • String patterns that can be used to filter and group files

    - by Louis Rhys
    One of our application filters files in certain directory, extract some data from it and export a document from the extracted data. The algorithm for extracting the data depends on the file, and so far we use regex to select the algorithm to be used, for example .*\.txt will be processed by algorithm A, foo[0-5]\.xml will be processed by algo B, etc. However now we need some files to be processed together. For example, in one case we need two files, foo.*\.xml and bar.*\.xml. Part of the information to be extracted exist in the foo file, and the other part in the bar file. Moreover, we need to make sure the wild card is compatible. For example, if there are 6 files foo1.xml foo23.xml bar1.xml bar9.xml bar23.xml foo4.xml I would expect foo1 and bar1 to be identified as a group, and foo23 and bar23 as another group. bar9 and foo4 has no pair, so they will not be treated. Now, since the filter is configured by user, we need to have a pattern that can express the above requirement. I don't think you can express meaning like above in standard regex. (foo|bar).*\.xml will match all 6 file above and we can't identify which file is paired for a particular file. Is there any standard pattern that can express it? Or any idea how to modify regex to support this, that can be implemented easily?

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  • how to remove unmet dependencies created by vlc player in ubuntu 12.04 LTS?

    - by Anti
    Output on trying to remove vlc with sudo apt-get remove vlc: niranjan@niranjan-OEM:~$ sudo apt-get remove vlc Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: libvlccore5 : Depends: vlc-data (= 2.0.8-0ubuntu0.12.04.1) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). Trying sudo apt-get -f install niranjan@niranjan-OEM:~$ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: vlc-data The following NEW packages will be installed: vlc-data 0 upgraded, 1 newly installed, 0 to remove and 452 not upgraded. 8 not fully installed or removed. Need to get 0 B/10.3 MB of archives. After this operation, 30.4 MB of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... 95% dpkg: unrecoverable fatal error, aborting: files list file for package 'libavutil51' is missing final newline E: Sub-process /usr/bin/dpkg returned an error code (2)

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  • Dependency injection: what belongs in the constructor?

    - by Adam Backstrom
    I'm evaluating my current PHP practices in an effort to write more testable code. Generally speaking, I'm fishing for opinions on what types of actions belong in the constructor. Should I limit things to dependency injection? If I do have some data to populate, should that happen via a factory rather than as constructor arguments? (Here, I'm thinking about my User class that takes a user ID and populates user data from the database during construction, which obviously needs to change in some way.) I've heard it said that "initialization" methods are bad, but I'm sure that depends on what exactly is being done during initialization. At the risk of getting too specific, I'll also piggyback a more detailed example onto my question. For a previous project, I built a FormField class (which handled field value setting, validation, and output as HTML) and a Model class to contain these fields and do a bit of magic to ease working with fields. FormField had some prebuilt subclasses, e.g. FormText (<input type="text">) and FormSelect (<select>). Model would be subclassed so that a specific implementation (say, a Widget) had its own fields, such as a name and date of manufacture: class Widget extends Model { public function __construct( $data = null ) { $this->name = new FormField('length=20&label=Name:'); $this->manufactured = new FormDate; parent::__construct( $data ); // set above fields using incoming array } } Now, this does violate some rules that I have read, such as "avoid new in the constructor," but to my eyes this does not seem untestable. These are properties of the object, not some black box data generator reading from an external source. Unit tests would progressively build up to any test of Widget-specific functionality, so I could be confident that the underlying FormFields were working correctly during the Widget test. In theory I could provide the Model with a FieldFactory() which could supply custom field objects, but I don't believe I would gain anything from this approach. Is this a poor assumption?

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  • Scalable Architecture for modern Web Development [on hold]

    - by Jhilke Dai
    I am doing research about Scalable architecture for Web Development, the research is solely to support Modern Web Development with flexible architecture which can scale up/down according to the needs without losing any core functionality. By Modern Web I mean to support all the Devices used to access websites, but the loading mechanism for all devices would be different. My quest of architecture is: For PC: Accessing web in PC is faster but it also depends on the Geo-location, so, the application would check by default the capacity of Internet/Browser and load the page according to it. For Mobile: Most of the mobile design these days either hide information or use different version of same application. eg: facebook uses m.facebook.com which is completely different than PC version. Hiding the things from Mobile using JavaScript or CSS is not a solution as it'll consume the bandwidth and make the application slow. So, my architecture research is about Serving one Application, which has different stack. When the application receives the request it'd send the Packaged Stack to the received request. This way the load time for end users would be faster and maintenance of application for developers would be easier. I am researching about for 4-tier(layered) architecture like: Presentation Layer Application Logic Layer -- The main Logic layer which stores the Presentation Stack Business Logic Layer Data Layer Main Question: Have you come across of similar architecture? If so, then can you list the links here, I'm very much interested to learn about those implementations specially in real world scenario. Have you thought about similar architectures and tried your own ideas, or if you have any ideas regarding this, then I urge to share. I am open to any discussions regarding this, so, please feel free to comment/answer.

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  • Is there a way to legally create a game mod?

    - by Rodrigo Guedes
    Some questions about it: If I create a funny version of a copyrighted game and sell it (crediting the original developers) would it be considered a parody or would I need to pay royalties? If I create a game mod for my own personal use would it be legal? What if I gave it for free to a friend? Is there a general rule about it or it depends on the developer will? P.S.: I'm not talking about cloning games like this question. It's all about a game clearly based on another. Something like "GTA Gotham City" ;) EDIT: This picture that I found over the internet illustrate what I'm talking about: Just in case I was not clear: I never created a mod game. I was just wondering if it would be legally possible before trying to do it. I'm not apologizing piracy. I pay dearly for my games (you guys have no idea how expensive games are in Brazil due to taxes). Once more I say that the question is not about cloning. Cloning is copy something and try to make your version look like a brand new product. Mods are intended to make reference to one or more of its source. I'm not sure if it can be done legally (if I knew I wasn't asking) but I'm sure this question is not a duplicate. Even so, I trust in the moderators and if they close my question I will not be offended - at least I had an opportunity to explain myself and got 1 good answer (by the time I write this, maybe some more will be given later).

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  • What is the difference between apt-get and dpkg?

    - by William F. Hammond
    Both apt-get and dpkg can be used to install and remove packages. When to use which? Context: I'm in stuck in package limbo between 10.04.4 LTS and 12.04.1 LTS after an attempted upgrade via the package manager. For example, to fix things I wanted to remove "skype" so that things it depends on could be freed up. But "aptitude" (my normal package management tool) refused to remove it. The advice at http://administratosphere.wordpress.com/2011/11/02/rescuing-an-interrupted-ubuntu-upgrade/ seems helpful but not adequate to resolve my package conflicts. Also there's a strange thing where the grub menu seems not to be properly interpreted, but eventually I get the splash screen with "/ is not ready yet or not present. Continue to wait; or press S to skip or M to recover manually." Manual recovery puts me in a single user shell where I can easily remount / as rw and bring up the network. If I become myself, the command line seems quite robust, but, there seems to be no way to get X11 going.

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  • Applying Interactive Sorting to Multiple Columns in Reporting Services

    - by smisner
    A nice feature that appeared first in SQL Server 2008 is the ability to allow the user to click a column header to sort that column. It defaults to an ascending sort first, but you can click the column again to switch to a descending sort. You can learn more about interactive sorts in general at the Adding Interactive Sort to a Data Region in Books Online. Not mentioned in the article is how to apply interactive sorting to multiple columns, hence the reason for this post! Let’s say that I have a simple table like this: To enable interactive sorting, I open the Text Box properties for each of the column headers – the ones in the top row. Here’s an example of how I set up basic interactive sorting: Now when I preview the report, I see icons appear in each text box on the header row to indicate that interactive sorting is enabled. The initial sort order that displays when you preview the report depends on how you design the report. In this case, the report sorts by Sales Territory Group first, and then by Calendar Year. Interactive sorting overrides the report design. So let’s say that I want to sort first by Calendar Year, and then by Sales Territory Group. To do this, I click the arrow to the right of Calendar Year, and then, while pressing the Shift key, I click the arrow to the right of Sales Territory Group twice (once for ascending order and then a second time for descending order). Now my report looks like this: This technique only seems to work when you have a minimum of three columns configured with interactive sorting. If I remove the property from one of the columns in the above example, and try to use the interactive sorting on the remaining two columns, I can sort only the first column. The sort on the second column gets ignored. I don’t know if that’s by design or a bug, but I do know that’s what I’m experiencing when I try it out!

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  • 12.10 wants to install multiarch :i386-packages

    - by gspr
    I have an AMD64 system without any i386 multiarch packages. After successfully upgrading to 12.10, aptitude seems to want to install a few, and I can't tell why: $ sudo aptitude safe-upgrade Resolving dependencies... The following NEW packages will be installed: gcc-4.7-base:i386{a} libarmadillo3{a} libboost-date-time1.49-dev{a} libboost-serialization1.49-dev{a} libboost-serialization1.49.0{a} libboost-thread1.49-dev{a} libboost1.49-dev{a} libc6:i386{a} libgcc1:i386{a} libgdal1{a} libhdf5-7{a} libltdl7:i386{a} libnetcdfc7{a} libodbc1:i386{a} libreadline6:i386{a} libtinfo5:i386{a} odbcinst1debian2:i386{a} unixodbc:i386{a} Why libc6:i386, for example? I ask.. $ aptitude why libc6:i386 p icoutils:i386 Provides icoutils p icoutils:i386 Depends libc6:i386 (>= 2.8) ... alright, but why icoutils:i386? $ aptitude why icoutils:i386 p icoutils:i386 Provides icoutils But I already have the AMD64 version of icoutils: $ aptitude search icoutils i icoutils - Create and extract MS Windows icons and cursors p icoutils:i386 - Create and extract MS Windows icons and cursors Has some multiarch behavior changed recently, or am I just overlooking something? Addendum: Chasing down from gcc-4.7-base:i386, I'm led to qdbus:i386, which is up for installation since it provides qdbus... which I already have.

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  • To encryption=on or encryption=off a simple ZFS Crypto demo

    - by darrenm
    I've just been asked twice this week how I would demonstrate ZFS encryption really is encrypting the data on disk.  It needs to be really simple and the target isn't forensics or cryptanalysis just a quick demo to show the before and after. I usually do this small demo using a pool based on files so I can run strings(1) on the "disks" that make up the pool. The demo will work with real disks too but it will take a lot longer (how much longer depends on the size of your disks).  The file hamlet.txt is this one from gutenberg.org # mkfile 64m /tmp/pool1_file # zpool create clear_pool /tmp/pool1_file # cp hamlet.txt /clear_pool # grep -i hamlet /clear_pool/hamlet.txt | wc -l Note the number of times hamlet appears # zpool export clear_pool # strings /tmp/pool1_file | grep -i hamlet | wc -l Note the number of times hamlet appears on disk - it is 2 more because the file is called hamlet.txt and file names are in the clear as well and we keep at least two copies of metadata. Now lets encrypt the file systems in the pool. Note you MUST use a new pool file don't reuse the one from above. # mkfile 64m /tmp/pool2_file # zpool create -O encryption=on enc_pool /tmp/pool2_file Enter passphrase for 'enc_pool': Enter again: # cp hamlet.txt /enc_pool # grep -i hamlet /enc_pool/hamlet.txt | wc -l Note the number of times hamlet appears is the same as before # zpool export enc_pool # strings /tmp/pool2_file | grep -i hamlet | wc -l Note the word hamlet doesn't appear at all! As a said above this isn't indended as "proof" that ZFS does encryption properly just as a quick to do demo.

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  • Jersey 1.8 is released

    - by Jakub Podlesak
    On the last Friday, we have released the 1.8 version of Jersey, the open source, production quality, reference implementation of JAX-RS. The JAX-RS 1.1 specification is available at the JCP web site and also available in non-normative HTML here. For an overview of JAX-RS features read the Jersey user guide. To get started with Jersey read the getting started section of that guide. To understand more about what Jersey depends on read the dependencies section of that guide. See change log here. This, 1.8, version of Jersey is going to be integrated into GlassFish 3.1.1 and contains bug fixes mainly. The most important fix from this perspective is included in the JAX-RS/EJB integration layer. It is now possible to implement JAX-RS resources as EJB Session beans, which implement local and/or remote interfaces. This functionality was broken in previous releases. Another great addition should come into the client space, where Pavel has already done some preparation in the client API (including some breaking changes there) for the non-blocking asynchronous client feature. The implementation is already part of the experimental Jersey space and should be included as part of the stable Jersey bits in some of the coming releases. For feedback send email to: [email protected] (archived here) or log bugs/features here.

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