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In Linux you can make or restore an image of a drive with the dd command. For instance, creating a disc iso of a DVD could be done by specify the block device for the dvd-rom as the input file and a new file for the output file. dd if=/dev/sr0 of=/home/jdoe/cdrom.iso Another frequent use would be to make a bit-for-bit copy of a disk as a backup. dd if=/dev/sdb of=/dev/sdc What happens if you need to make a bit-for-bit copy of a drive to a r..
I love GNOME and Fedora, but “upgrading” from Fedora 17 to 18 did not go well for me. I recommend you wait until either these are all fixed, or Fedora 19+ suits your needs. Here are a list of problems I had, and some workarounds. Hopefully proper patches to these bugs will get merged quickly, so that you don’t need to use these fixes. Problem : Boot fails after upgrade from Fedora 17 to Fedora 18. I used the new “fedup” method.
I love GNOME and Fedora, but “upgrading” from Fedora 17 to 18 did not go well for me. I recommend you wait until either these are all fixed, or Fedora 19+ suits your needs. Here are a list of problems I had, and some workarounds. Hopefully proper patches to these bugs will get merged quickly, so that you don’t need to use these fixes. Problem : Boot fails after upgrade from Fedora 17 to Fedora 18. I used the new “fedup” method.
In the dark ages of development, great software meant packing in the functionality. People began doing more and more with their software. Updates meant newer and more exciting functionality. Sounds great, right? Of course it does, but something went horribly wrong. Slowly we became inundated with cluttered screens as software developers struggled to find a place to put their latest innovative functionality. Buttons began adding up and befor..
One of my customers ( mobilreport ) is used by accountancy departments in large companies in Austria and Germany to analyze their employees’ mobile phone usage. More so than average web software, this web software needs to work on whatever web browsers large companies have installed; large companies tend to use more Internet Explorer than the world at large. So it’s with pleasure that I report the following trend: (Numbers are the % of ..
I was getting this error when running a Sonar analysis recently. This was caused by the Jenkins/Sonar process getting killed while the project analysis is underway. Sonar now uses a database semaphore to prevent multiple builds running at the same time, but if the job gets terminated then the semaphores don’t get cleaned up. To fix the problem : Log into the database and delete any rows in the ‘semaphores’ table.
How do you measure progress on an Agile project? What is the best way to get much-needed visibility into the status of your projects and programs? Is the burndown the answer?
The Coaching Architect - juri.dev - 13 years ago - eng
Giant Creme Egg - sam.hooke.me - 13 years ago - eng
Tea club started with some Whittard’s Cherry Blossom tea, followed by some Fine Cut Lemongrass tea. The lemongrass tea left a lot of stuff at the bottom of the thing, perhaps because it is so fine that it escaped the filter thingy. I really need to improve my terminology. Every single track of Mario Kart on the N64 was then played, well, except for Rainbow Road - that course is just too tedious. In a more exciting turn of events, we tra..
Giant Creme Egg - sam.hooke.me - 13 years ago - eng
Tea club started with some Whittard’s Cherry Blossom tea, followed by some Fine Cut Lemongrass tea. The lemongrass tea left a lot of stuff at the bottom of the thing, perhaps because it is so fine that it escaped the filter thingy. I really need to improve my terminology. Every single track of Mario Kart on the N64 was then played, well, except for Rainbow Road - that course is just too tedious. In a more exciting turn of events, we tra..
Snapper V4 Webinar Snapper V4 is out! The major new features include: RAC support – ability to query stats from remote instances Manual Before and After snapshot support – no need to use DBMS_LOCK sleeps anymore Show useful averages and ratios *in addition to* raw metrics for faster troubleshooting And more! :) Snapper is still a free-to-use tool and it still does NOT require any object creation nor changes in your databases for us..
Snapper V4 Webinar Snapper V4 is out! The major new features include: RAC support – ability to query stats from remote instances Manual Before and After snapshot support – no need to use DBMS_LOCK sleeps anymore Show useful averages and ratios *in addition to* raw metrics for faster troubleshooting And more! :) Snapper is still a free-to-use tool and it still does NOT require any object creation nor changes in your databases for us..
As a young man I discovered that most people are insecure and full of shit. They are balloons of crap on the verge of bursting. The slightest pin-prick can destroy their self image and cover everyone else in their filth. I discovered that ‘normal’ is a lie. A teenage boy that can’t smile is as self conscious as a girl with a bad haircut. I was lucky. When I was 9 I lost control of a motorcycle and crashed. When I was 9 I learned that there’..
In my first year of college, there was a festival of sorts on campus. It was a day designed to provide the college with goodwill and easy photo ops for the pamphlets they would use to lure freshmen the next year. Though only a side-effect in the sight of those organizing the event, it managed to provide those of us who would normally spend the entire day in class with a chance to stop and imagine what it would be like to relax.
This week, I was delighted to finally reveal Discourse , the app I’ve been working on for most of the last year in secrecy with awesome people . The launch got a lot of attention - we were featured on Hacker News, Slashdot, Wired, Reddit, Techcrunch and countless other places. Personally I’ve been floored with the amount of feedback so far. It’s going to take quite some time to get through it all! One question people keep asking me is “..
Hi All, Really quick update, from the emails I’m getting it looks like the livetiles aren’t behaving well after users update to windows phone 7.8. This problem seems to be experienced by others, I’m trying to work out whats going on! http://forums.wpcentral.com/windows-phone-7/214957-3rd-party-live-tiles-stuck-since-7-8-update.html
If computers are analogous to powered flight, we are four and a half years after the Wright Brothers flew at Kittyhawk; we are still flying airplanes made out of bicycle parts.” This was merely the first of the near innumerable excerpts I wanted to pull out if CMD+SPACE’s twenty-eight episode Technology and Music, with John Roderick . For the rest of them though, check out this excellent podcast hosted by Myke Hurley of 70 Decibels . Al..
After reading this article by Hartley Brody quite some time ago, I set out to build a web scraper designed to analyze Hacker News. And while the project remains unfinished, it is in no way a reflection upon the work that inspired me to undertake it. Hartley Brody talks about ah interesting way to capture data using a web browser and scraping rather than an API in an article well worth the read. Permalink.
9 of the Best Free C Books è un’ottima selezione di libri gratuiti sul linguaggio C. C’è n’è per tutti, dai testi per principianti a quelli per programmatori esperti provenienti da altri linguaggi. Lo sapete già, C dovrebbe far parte del bagaglio di ogni programmatore.
DZone MVB Goodies Box - juri.dev - 13 years ago - eng
9 of the Best Free C Books è un’ottima selezione di libri gratuiti sul linguaggio C. C’è n’è per tutti, dai testi per principianti a quelli per programmatori esperti provenienti da altri linguaggi. Lo sapete già, C dovrebbe far parte del bagaglio di ogni programmatore.
9 of the Best Free C Books è un’ottima selezione di libri gratuiti sul linguaggio C. C’è n’è per tutti, dai testi per principianti a quelli per programmatori esperti provenienti da altri linguaggi. Lo sapete già, C dovrebbe far parte del bagaglio di ogni programmatore.
For any successful web application there is likely to come a time when you need to conduct some large migration on the backend. I dont mean simple add a column here or add an index there , but rather truly sizeable migrations… Going from MySQL to Postgres or migrating from an older version of Postgres such as a 32 bit instance to a newer 64 bit instance. In these cases the default approach is to just schedule downtime often throwing up....
For any successful web application there is likely to come a time when you need to conduct some large migration on the backend. I dont mean simple add a column here or add an index there , but rather truly sizeable migrations… Going from MySQL to Postgres or migrating from an older version of Postgres such as a 32 bit instance to a newer 64 bit instance. In these cases the default approach is to just schedule downtime often throwing up....
For those who aren’t regular readers: as a followup to this post, there are four posts detailing the basic four methods of proof, with intentions to detail some more advanced proof techniques in the future. You can find them on this blog’s primers page. Do you really want to get better at mathematics? Remember when you first learned how to program? I do. I spent two years experimenting with Java programs on my own in high school.
For those who aren’t regular readers: as a followup to this post, there are four posts detailing the basic four methods of proof, with intentions to detail some more advanced proof techniques in the future. You can find them on this blog’s primers page. Do you really want to get better at mathematics? Remember when you first learned how to program? I do. I spent two years experimenting with Java programs on my own in high school.
For those who aren’t regular readers: as a followup to this post, there are four posts detailing the basic four methods of proof, with intentions to detail some more advanced proof techniques in the future. You can find them on this blog’s primers page. Do you really want to get better at mathematics? Remember when you first learned how to program? I do. I spent two years experimenting with Java programs on my own in high school.
After having worked with Scrum for a number of years, I still witness sprint reviews where the team’s demonstration of the product is confusing and the value produced in the sprint is unclear. The demo may consist of just a bunch of different functions and screens without any meaning. Or maybe the team is just talking about what happens behind the curtains in the database. Or maybe the demo just doesn’t display the value that the team was s..
DJ Jackalope spins dirty Drum and Bass at the DEFCON 14 Black and White Ball. Jackalope Army Cafepress Store open! If there's something you want that you don't see, let me know, I will see what I can do to help! http://www.cafepress.com/jackalopearmy
Git Protips™ - carlosbecker.com - 13 years ago - eng
Git has a lot of features, and I bet that 90% of who use it (including me) doesn’t know half of them. Well, maybe, someday, one of those “unknown features” can “save your life” .
When I communicated about concerns and issues - as well as complaints from Cryptoparty participants peeved with out-of-touch crypto-lecturers who wanted to teach command lines to crypto-newcomers - I got put downs, got brushed off, ignored, told ‘oh don’t worry, we’ll look after it, it won’t be a problem’, ‘don’t worry your head about it’, or aggravatingly - told that I wasn’t qualified to judge their choices as I wasn’t a crypto-expert or ..
From the author of so simple , the article I referenced in my last post , speaking to her attempt at achieving a “simpler, greener, cleaner, freer life”: “I still feel very guilty about small habits which I can’t shake, one of which is my Nespresso coffee machine with its dependency on capsules bought in a store which makes my skin crawl with its ostentatiousness, a cathedral to consumerism. But today while stocking up my habit, I fo....
Another blogger writing a response to Rohan Anderson’s post Hard at Work, Living Simple , putting in to words the feeling I spent so long attempting to quantify and capture but, ultimately, proved too elusive to voice in my commentary : “There is no manual, no one set way to downsize, seize life, focus on what’s important. But geez, when I read Rohan’s Whole Larder Love blog entry today, I was ready to make him my guru, his website..
Can one have two tables with constraints of the same name? Is that even consistent between types of constraints? What about between database vendors? It turns out that it’s neither consistent between types, nor is the way in which it’s inconsistent consistent between database vendors.  
MySQL 5.5 PostgreSQL 9.2 Local to ta..
We’ve just launched a new library project type for Codename One, this is very preliminary but we think this is pretty much the final direction we will take with the Codename One library support. To get started just create a new project and select the Codename One library project as your option. This will generate a cn1lib file when you build the project which you can just place in a lib dir of any new Codename One project in order to di..
Spinning Levers” 1936 Chevrolet Auto Mechanics – 10 min video illustrating starting off with levers and working to how a car tranmission and gearbox works Is College a Lousy Investment? – For an increasing number of kids, the extra time and money spent pursuing a college diploma will leave them worse off than they were before … Continue reading Links: Spinning Levers, Redis, College a bad investment, Playing the World Champ
Note: this is (most of) the content from the first post to my Working in the Cloud email list - more are prepared and will go out soon, so if you don’t want to miss the rest you can still join the list here . About a week after I published the iPad + Linode: One Year Later post, my employer decided to buy me a shiny new laptop for CUDA (GPU) development - a Dell XPS 15 with 8GB RAM, a quad-core i7 CPU and a 512GB SSD drive. It was s....
When the wagon lumbered up the street proclaiming the news of Aaron Swartz’s suicide, I jumped right on. I had never even heard of him, but I nevertheless jumped right on the bandwagon, eager to bemoan the passing of an individual many hailed as nothing short of a prodigy. I eulogized the man , praised his work , and condemned the system that supposedly drove him from this life. Tom Negrino of Backup Brain took a slightly different ap....
I greatly admire what WordPress did for the web; to say that we want to be the WordPress of forums is not a stretch at all. We’re also serious about this eventually being a viable open-source business, in the mold of WordPress. And we’re not the only people who believe in the mission: I’m proud to announce that we have initial venture capital funding from First Round, Greylock, and SV Angel. We’re embarking on a five year mission to improve..
No one could tell me why I was wasting my creative energy, focus, and life on something I didn’t want to do. Classes didn’t hold my attention- I could teach myself more in an afternoon than I would learn in a 10-week class. My classes appealed to the lowest-common denominator. The bottom of the barrel.” Permalink.
Since my early twenties, I’ve looked at my older peers and tried to figure out why some stagnate and how others stay vibrant.” While Matt Might goes on to propose that “comfort breeds technical fossilization” and thus leads many writers to stagnate as time goes by, I would instead suggest that the blame should go to stagnation itself as both the cause and effect rather than simply the effect of growing comfortable, for through the door pr..
What I Do for a Living - ticci.org - 13 years ago - eng
A powerful story from Federico Viticci talking about his prolonged battle with cancer, his job as a technology writer, and some of the realizations that combination has forced upon him. “I’ve made mistakes in my life, but I can’t escape from what I love doing  —  what in part led me to being in this room. “‘Doctor, I write about technology.’” Permalink.
Rohan Anderson of Whole Larder Love on the pursuit of happiness in a more simple life: “Many believe that you’re supposed to find love, get married, work you butt off, earn money, own stuff, out-do your neighbours and pop out perfect kids. People that believe in this are in fact, idiots. Because that approach is not suited for everyone. From my short life I’d say life is more about experiences, love, culture, memories, achieving conte..
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