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• Securing User Account Details with MySQL

  - by Antoinette O'Sullivan

  Keeping user account details secure is always at the forefront of a Database Administrator's mind. However, users want to get up and running as soon as possible without complex login procedures. You can learn more about this and many other topics in the MySQL for Database Administrator course. For example, MySQL 5.6.6 introduced a new utility: mysql_config_editor, which makes secure access via MySQL client applications much easier to establish, while still providing a good measure of security. The mysql_config_editor stores a user's authentication details in an encrypted login file called mylogin.cnf. This login file is readable and writable for the user who invokes the utility, and invisible to everyone else. You can use it to collect all your hard-to-remember server locations and paswords safe in the knowledge that your passwords are never invoked using clear text. The MySQL for Database Administrators course is a 5-day instructor-led course which is available as a: Training-on-Demand: Start training within 24 hours of registration, following lecture material at your own pace through streaming video and booking time on a lab environment to suit your schedule. Live-Virtual Event: Attend a live event from your own desk, choosing from a selection of events on the schedule to suit different timezones. In-Class Event: Travel to an education center to attend this course. Below is a selection of the events already on the schedule. Location  Date  Delivery Language  Brisbane, Australia  18 August 2014  English  Brussels, Belgium  25 August 2014  English  Sao Paulo, Brazil  2 June 2014  Brazilian Portuguese  Cairo, Egypt  28 September 2014  Arabic  London, England  14 July 2014  English  Belfast, Ireland  15 September 2014  English  Dublin, Ireland  29 September 2014  English  Rome, Italy  16 June 2014  Italian  Seoul, Korea  9 June 2014  Korean  Petaling Jaya, Malaysia  16 June 2014  English  Utrecht, Netherlands  25 August 2014  English  Edinburgh, Scotland  26 June 2014  English  Madrid, Spain  6 October 2014  Spanish  Tunis, Tunisia  27 October 2014  French  Istanbul, Turkey  14 July 2014  Turkish To register for an event, request an additional event or learn more about the authentic MySQL curriculum, go to http://education.oracle.com/mysql. To read more about MySQL security, consult the MySQL Reference Manual - http://dev.mysql.com/doc/refman/5.6/en/security.html.

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• How can Swift be so much faster than Objective-C?

  - by Yellow

  Apple launched its new programming language Swift today. In the presentation, they made some performance comparisons between Objective-C and Python. The following is a picture of one of their slides, of a comparison of those three languages performing some complex object sort: There was an even more incredible graph about a performance comparison working on some encryption algorithm. Obviously this is a marketing talk, and they didn't go into detail on how this was implemented in each. I leaves me wondering though: how can a new programming language be so much faster? In this example, surely you just have a bad Objective-C compiler or you're doing something in a less efficient way? How else would you explain a 40% performance increase? I understand that garbage collection/automated reference control might produce some additional overhead, but this much?

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• An update process that is even worse than Windows updates

  - by fatherjack

  I'm sorry EA but your game update process stinks. I am not a hardcore gamer but I own a Playstation3 and have been playing Battlefield Bad Company 2 (BFBC2) a bit since I got it for my birthday and there have been two recent updates to the game. Now I like the idea of games getting updates via downloadable content. You can buy a game and if there are changes that are needed (service packs if you will) then they can be distributed over the games console network. Great. Sometimes it fixes problems,...(read more)

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• A better way to do concurrent programming

  - by Alex.Davies

  Programming to take advantage of multicore processors is hard. If you let multiple threads access the same memory, bad things happen. To avoid this, you use the lock keyword, but if you use that in the wrong way, your code deadlocks. It's all a nightmare. Luckily, there's a better way - Actors. They're really easy to think about. They're really safe (if you follow a couple of simple rules). And high-performance, type-safe actors are now available for .NET by using this open-source library: http://code.google.com/p/n-act/ Have a look at the site for details. I'll blog with more reasons to use actors and tips and tricks to get the best parallelism from them soon.

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• Weekly technology meeting?

  - by Mag20

  I am thinking of introducing weekly technology meeting where programmers working on the same project can discuss things like: current status of the project on technical side technology backlog. Things that we may have skipped because of deadlines but now coming back to bite us. technology constraints that are limiting developers from being productive new and emerging technologies that may apply to the project Basically looking at the project from programmer's perspective, not the business side. - What would be some good guidelines for a meeting like this? How long should the meeting last? Is weekly too often? Should we time-limit each topic? What kinda of topics are good for a meeting like this and which ones are bad? Is 10 people too many? ...

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• How can I restore a corrupted Shotwell db?

  - by Yann Dìnendal

  While I was importing photos from a SD card in Shotwell, my laptop has crashed (shutdown because of over-heating). Now, I can no longer launch Shotwell: $ shotwell ** ERROR:x86_64-linux-gnu/db/VersionTable.c:104:version_table_construct: assertion failed: (res == SQLITE_OK) If I move the .db file ~/.shotwell/data/photo.db elsewhere so it is no longer present (but backed-up), shotwell will launch, but will rebuild its library, which will be empty. I can re-import the folders shotwell creates, but I lose nearly all meta-data (most importantly the "folders", or events, and their main picture) Is there a way to repair/rebuild/restore photo.db? How can I see what's inside? how bad it's damaged? Or is there another way to get back my events and imports?

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• Usb Live No hardisk

  - by sergey simeonov

  Ok so i own a toshiba laptop , and the thing is my hdd went bad,but i had a usb flash drive with i live cd Ubuntu on it. Now i dont have and hdd plugged in my laptop im only with a flashdrive. My question is how much memory does this live cd support cause my flash drive is 32 gigs and after about 1.5 gigs of downloads a screen shows up and tells me that i dont have enough space left. the other thing is i dont have money to get a hdd right now so i wanna use this flash drive for now but can i somehow customize the cd thru the live edition so i could have programs that i need after restarts i tried with Customization Live Cd but when i run it , it stops and in my terminal it says could not execute not enough space. So if anyone can tell me what can i do with this problem im having with space on my live Usb ubuntu.

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• Poor mobile performance when running from Eclipse

  - by Yajirobe_LOL

  So after weeks of thinking my rendering code was bad, I accidentally discovered the following: Running my game on a Nexus S From Eclipse (Debug as - Android application): 12fps From the device while still attached to USB (getting log info in Eclipse still): 24fps From the device while not attached via USB: 56fps I was wondering if anyone else has issues like this? I mean, the problem really isn't a problem since the final release build will likely have good performance, but for the time being I don't want to have to keep (un)plugging my device in and out when testing code all day long. Is there some remedy for this or does anyone have any input/advice? Thanks.

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• Reducing brightness of large areas containing bright colours

  - by intuited

  I do most of my work in either a terminal or a web browser. I prefer my terminals to use bright colours on dark. I would really prefer that web pages tended to look this way as well, but that's not under my control. The problem is that when I switch from a light-on-dark terminal to a dark-on-light web page (like this one), my eyes have to adjust to the overall rise in screen brightness. Apparently this is bad for your eyes, in addition to being painful and annoying. It would seem to be possible for some layer of the interface to adjust the displayed colours for parts of the screen, or perhaps for particular windows, to reduce the brightness of the brighter areas of the screen. Can this be done, possibly with a Compiz extension?

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• Is it normal needing time to understand code i wrote recently

  - by user1478167

  By recently i mean some weeks ago. I am trying to continue a project i left 2 weeks ago and i need time to understand some functions i wrote(not copied from somewhere) and it takes me time. Normally i don't need to because my functions,methods etc are black boxes but when i need to change something it's really hard. Does this mean i write bad code? I am still in school and i am the only who writes/uses the code so i don't have feedback, but i am afraid that if it is difficult for me to understand it, it would be 10 times more difficult for someone else. What should i do? I write a lot of comments but most of the time are useless when reviewing. Do you have any suggestions?

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• What are requirements for a successful SOA?

  - by Amir Rezaei

  I’m an EA in an organisation with 10000+ employees. Strategically we are heading towards SOA. Currently I’m researching about SOA’s and creating a road map and I have come over many blogs that talk about “SOA is dead”. We can all agree that SOA is not just web-services. The problem is that I have hard to find any information on the reason behind SOA-fail stories in enterprises. What went bad and what went right? My question is: What are common SOA mistakes in enterprises that make SOA fail in long term? Is the any best practice for SOA? What are the most important requirements for a successful SOA in an enterprise? It would be good feedback towards our SOA strategy in this organisation. I have tried to narrow down the question, but it’s hard due to the nature of the question.

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• How I might think like a hacker so that I can anticipate security vulnerabilities in .NET or Java before a hacker hands me my hat [closed]

  - by Matthew Patrick Cashatt

  Premise I make a living developing web-based applications for all form-factors (mobile, tablet, laptop, etc). I make heavy use of SOA, and send and receive most data as JSON objects. Although most of my work is completed on the .NET or Java stacks, I am also recently delving into Node.js. This new stack has got me thinking that I know reasonably well how to secure applications using known facilities of .NET and Java, but I am woefully ignorant when it comes to best practices or, more importantly, the driving motivation behind the best practices. You see, as I gain more prominent clientele, I need to be able to assure them that their applications are secure and, in order to do that, I feel that I should learn to think like a malevolent hacker. What motivates a malevolent hacker: What is their prime mover? What is it that they are most after? Ultimately, the answer is money or notoriety I am sure, but I think it would be good to understand the nuanced motivators that lead to those ends: credit card numbers, damning information, corporate espionage, shutting down a highly visible site, etc. As an extension of question #1--but more specific--what are the things most likely to be seeked out by a hacker in almost any application? Passwords? Financial info? Profile data that will gain them access to other applications a user has joined? Let me be clear here. This is not judgement for or against the aforementioned motivations because that is not the goal of this post. I simply want to know what motivates a hacker regardless of our individual judgement. What are some heuristics followed to accomplish hacker goals? Ultimately specific processes would be great to know; however, in order to think like a hacker, I would really value your comments on the broader heuristics followed. For example: "A hacker always looks first for the low-hanging fruit such as http spoofing" or "In the absence of a CAPTCHA or other deterrent, a hacker will likely run a cracking script against a login prompt and then go from there." Possibly, "A hacker will try and attack a site via Foo (browser) first as it is known for Bar vulnerability. What are the most common hacks employed when following the common heuristics? Specifics here. Http spoofing, password cracking, SQL injection, etc. Disclaimer I am not a hacker, nor am I judging hackers (Heck--I even respect their ingenuity). I simply want to learn how I might think like a hacker so that I may begin to anticipate vulnerabilities before .NET or Java hands me a way to defend against them after the fact.

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• How best do you represent a bi-directional sync in a REST api?

  - by Edward M Smith

  Assuming a system where there's a Web Application with a resource, and a reference to a remote application with another similar resource, how do you represent a bi-directional sync action which synchronizes the 'local' resource with the 'remote' resource? Example: I have an API that represents a todo list. GET/POST/PUT/DELETE /todos/, etc. That API can reference remote TODO services. GET/POST/PUT/DELETE /todo_services/, etc. I can manipulate todos from the remote service through my API as a proxy via GET/POST/PUT/DELETE /todo_services/abc123/, etc. I want the ability to do a bi-directional sync between a local set of todos and the remote set of TODOS. In a rpc sort of way, one could do POST /todo_services/abc123/sync/ But, in the "verbs are bad" idea, is there a better way to represent this action?

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• Oracle Ebusiness Suite 12.1.3 Oracle VM templates

  - by wcoekaer

  Steven Chan just published a great blog entry that talks about the release of a new set of Oracle VM templates. Oracle Ebusiness Suite 12.1.3. You can find the blog post here. Templates are available for: E-Business Suite 12.1.3 Vision (64-bit) E-Business Suite 12.1.3 Production (32-bit) E-Business Suite 12.x Sparse Middle Tiers (32-bit and 64-bit) Thanks Steven! Why does this stuff matter? Well, in general, virtualization (or cloud) solutions provide an easy way to create Virtual Machines. Whether it's through a "cloud api" or just a virtualization API. But all you end up with, in the end, is still just a Virtual Machine... Maybe with an OS pre-installed/pre-configured. So you have flexibility of moving VMs around and providing a VM but what about the actual applications (anything more than a very basic app)? The application administrator then still has to go and install and configure the OS for that application and install the application and its patches and basic configuration so that the application user then can go in. Building gold images for complex software stacks that are not owned by the users/admins is always very difficult. With our templates, we provide a number of things : Oracle Linux pre-installed and pre-configured with the minimum required packages for that application to run. (so it's secure) Oracle Linux can be distributed and used for free or with a support subscription. There is no trial license, there is no registration key, no alpha version or community version versus enterprise version. You get what we provide in our engineered systems, what we provide support for, without change. Supported out of the box. No virtual Trial appliances, no prototypes, no POC. What you download is production ready without change. The applications are installed by the developers of the application. The database team builds database templates, the applications engineering team builds applications templates. The first boot/configuration scripts ask for the basic information such as hostname, ip address, user passwords and then go off and set everything up correctly. All tested together - application - operating system - hypervisor. not 3 (or more) products from 3(or more) different companies.

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• Make game for iPhone only

  - by Alex

  From the beginning of development on my game I was hoping to release it as a universal app, but the gameplay simply doesn't work as well on the iPad. Also, it was designed to work on the iPhone screen, and the (even slight) difference in width to height ratio gives iPhone users an advantage over iPad users by seeing more of the path ahead. Not to mention it doesn't look quite right on the larger screen. Hypothetically, if my game becomes a top seller, would it be a bad idea to have it only an iPhone app? Would it make it far less likely for my app to become viral? My app would still work on the iPad like any other iPhone app, and I plan on eventually releasing an update that supports both iPad and iPhone.

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• MySQL vs. SQL Server Go daddy, What is the difference bewteen hosted DB and App_Data Db.

  - by Nate Gates

  I'm using Goddady for site hosting, and I'm currently using MySQL, because there are less limits on size,etc. My question is what is the difference between using a hosted Godaddy Db such as MySQL vs. creating a SQL Serverdatabase in the the App_Data folder? My guess is security? Would it be a bad idea to use a SQL ServerDB thats located in the App_Data folder? Additional Well I am able to create a .mdf (SQL Server DB file) in the App_Data folder, but I'm really unsure if should use that or not, If I did use it it would simplify using some of the Microsoft tools. Like I said my guess is that it would be less secure, but I don't really know. I know I have a 10gb, file system limit, so I'm assuming my db would have to share that space.

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• MythTV lost recordings - "No recordings available" and no recording rules either

  - by nimasmi

  I have a c.6 year old mythtv database. I recently upgraded from Ubuntu 10.04 to 12.04. This brought a MythTV upgrade from 0.24 to 0.25, which went well. Today, all my recordings have disappeared. They still exist in the /var/lib/mythtv/recordings folder, and the 'M' key in the Watch Recordings page says that there are 201 recordings available somewhere, but they will not display. See screenshot: (implicit thanks to whomever upvoted this, giving me sufficient reputation to upload images) Changing the filter does not remedy the fact that there is nothing shown in the lists. My Upcoming Recordings screen says that there are no rules set, but my list of previously recorded shows is still there, and has an entry from as recently as 3am today. mythbackend --printsched gives the following: user@box:~$ mythbackend --printsched 2012-09-22 12:59:20.537008 C mythbackend version: fixes/0.25 [v0.25.2-15-g46cab93] www.mythtv.org 2012-09-22 12:59:20.537043 C Qt version: compile: 4.8.1, runtime: 4.8.1 2012-09-22 12:59:20.537048 N Enabled verbose msgs: general 2012-09-22 12:59:20.537076 N Setting Log Level to LOG_INFO 2012-09-22 12:59:20.537142 I Added logging to the console 2012-09-22 12:59:20.537152 I Added database logging to table logging 2012-09-22 12:59:20.537279 N Setting up SIGHUP handler 2012-09-22 12:59:20.537373 N Using runtime prefix = /usr 2012-09-22 12:59:20.537394 N Using configuration directory = /home/user/.mythtv 2012-09-22 12:59:20.537999 I Assumed character encoding: en_GB.UTF-8 2012-09-22 12:59:20.538599 N Empty LocalHostName. 2012-09-22 12:59:20.538610 I Using localhost value of box 2012-09-22 12:59:20.538792 I Testing network connectivity to '192.168.1.2' 2012-09-22 12:59:20.539420 I Starting process manager 2012-09-22 12:59:20.541412 I Starting IO manager (read) 2012-09-22 12:59:20.541715 I Starting IO manager (write) 2012-09-22 12:59:20.541836 I Starting process signal handler 2012-09-22 12:59:20.684497 N Setting QT default locale to EN_GB 2012-09-22 12:59:20.684694 I Current locale EN_GB 2012-09-22 12:59:20.684813 N Reading locale defaults from /usr/share/mythtv//locales/en_gb.xml 2012-09-22 12:59:20.697623 I New static DB connectionDataDirectCon 2012-09-22 12:59:20.704769 I MythCoreContext: Connecting to backend server: 192.168.1.2:6543 (try 1 of 1) Calculating Schedule from database. Inputs, Card IDs, and Conflict info may be invalid if you have multiple tuners. 2012-09-22 12:59:27.710538 E MythSocket(21dfcd0:14): readStringList: Error, timed out after 7000 ms. 2012-09-22 12:59:27.710592 C Protocol version check failure. The response to MYTH_PROTO_VERSION was empty. This happens when the backend is too busy to respond, or has deadlocked in due to bugs or hardware failure. Things I have tried so far: restart the backend restart the frontend run mythtv-setup and check database passwords and IP addresses change the frontend setting for backend IP from localhost to 192.168.1.2 (the backend/frontend's IP) run optimize_mythdb.pl Other suggestions appreciated.

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• Why has C prevailed over Pascal?

  - by Konrad Morawski

  My understanding is that in the 1980s and perhaps in the 1990s, too - Pascal and C were pretty much head-to-head as production languages. Is the ultimate demise of Pascal only due to Borland's neglection of Delphi? Or was there more of such bad luck; or perhaps something inherently wrong with Pascal (any hopes for its revival?). I hope it's not an open, unanswerable question. I'm interested in historical facts and observations one can back up, rather than likes and dislikes. I also failed to find a duplicate question, which actually surprised me somewhat.

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• Problems with NVIDIA drivers: White screen with full(or almost full)screen apps

  - by Felipe

  My NVIDIA graphic card is a 7050/610i. My problem is that after upgrading to the last NVIDIA drivers when I use fullscreen apps (or almost fullscreen) the windows goes white. My xorg.conf file: # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 270.29 ([email protected]) Wed Feb 23 16:38:34 PST 2011 Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" Option "AddARGBGLXVisuals" "True" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection Section "Module" Load "glx" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" # generated from default EndSection Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Device" Identifier "Device0" VendorName "NVIDIA Corporation" Driver "nvidia" Option "NoLogo" "True" EndSection Any idea on how to solve this? <--Sorry for bad english, ask for more info--

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• Does TDD lead to the good design?

  - by Eugen Martynov

  I'm in transition from "writing unit tests" state to TDD. I saw as Johannes Brodwall creates quite acceptable design from avoiding any of architecture phase before. I'll ask him soon if it was real improvisation or he had some thoughts upfront. I also clearly understand that everyone has experience that prevents to write explicit design bad patterns. But after participating in code retreat I hardly believe that writing test first could save us from mistakes. But I also believe that tests after code will lead to mistakes much faster. So this night question is asking for people who is using TDD for a long time share their experience about results of design without upfront thinking. If they really practice it and get mostly suitable design. Or it's my small understanding about TDD and probably agile.

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• Can't install fglrx on Kernel 3.11.0-12

  - by byf-ferdy

  I'm running Ubuntu Gnome 13.10 on a Sony Vaio laptop. I tried to install the newest fglrx driver from the cchtml.com guide but no matter which version I use (13.4 or even 13.9) the installation of the generated .debs fails with this message: Error! Bad return status for module build on kernel: 3.11.0-12-generic (x86_64) This seems to be a confirmed bug on launchpad. Currently I'm running the Radeon SI driver but I really need some 3D acceleration. What is there I can do to install any version of fglrx correctly or to speed up the bug-fixing-process? How long does the fixing of these bugs usually take?

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• Do private static methods in C# hurt anything?

  - by fish

  I created a private validation method for a certain validation that happens multiple times in my class (I can't store the validated data for various reasons). Now, ReSharper suggests that the function could be made static. I'm a little reluctant to do so due known problems with static methods. It would be a private static method. My question is, can private static methods cause similar coupling and testing problems like public static methods? Is it a bad practice? I would guess not, but I'm not sure if there is a pitfall here.

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• Using GParted to rescue data and format hard drive to NTFS

  - by Ishan

  I'm having problems booting to Windows XP due to bad sectors on the hard drive. I've tried fixboot and fixmbr from the recovery console. That only made matters worse. Now I want to use GParted to attempt data rescue and format the hard drive to NTFS. Unfortunately, I get an error (Picture 2) when trying to recover my files, and the option to format the hard drive is grayed out. The only thing I can do is create a new partition. When I click "view" I get the "Unable to open the default file manager" error

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• anxiety and programming [closed]

  - by user83379

  I went to the doctor for anxiety and was prescribed a small dose of lexapro to help with anxiety and sleeping better. I am cautious about taking it since this is the first time it's got bad enough for me to talk to someone and I'm concerned it may negatively impact my career as a software developer. I'm also afraid that once I start it may be difficult to come off. Does anyone on here have experience with this? Is it likely that taking lexapro would negatively affect my problem solving skills, passion for programming or job performance? Thanks for any suggestions.

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• How do I add a network printer in Ubuntu 12.04?

  - by Ricky Robinson

  I know the name and the IP address of a network printer, but I can't seem to be able to search by IP address or name. Ubuntu developers love to move things around to make it difficult for users, so now with Ubuntu 12.04 I can only go on Application -> System Tools -> System Settings -> Printers, click on Network and a list of printers appears. Too bad the one I want to add isn't there. How do I do it? Here it suggests System -> Administration -> Printing, which simply doesn't exist.

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