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• Oracle Linux sort en version 6.3 : améliorations du système de fichiers Btrfs, des performances et optimisations du Kernel

  Oracle Linux sort en version 6.3 améliorations du système de fichiers Btrfs, des performances et optimisations du Kernel Oracle a publié récemment la version 6.3 de son système d'exploitation Oracle Linux. Créée à partir du clonage des sources de la distribution Red Hat Enterprise Linux (RHEL), cette mouture contient toutes les améliorations et nouveautés de RHEL 6.3. La plus grande différence entre Oracle Linux 6.3 et RHEL 6.3 est l'utilisation du noyau optimisé 2.6.39, qui dispose de plusieurs améliorations et corrections par rapport à l'original, et l'installation par défaut de « Unbreakable Enterprise Kernel 3.0.16 ». Oracle Linux 6.3 propose également la mise à jour de plusi...

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• Print to file in Black and White (but not in greyscale) [not printer specific]

  - by user2413

  Hi all, I have these pdf files of c++code and they are colored which would be cool, except that the network printer here is b&w and the printed out codes come in various shades of pale grey which makes them essentially unreadable (specially the comments). I would like everything (text, codes, commands,...) to be printed in the same (black) color. i've tried fuddling with the printer's properties, but the closest thing i see is the 'level of grey' tab, and there i have the choice between 'enhanced' and 'normal' (and it doesn't make a difference in my case). i've tried 'print to file', but i don't see any options there to print to b&w, I've tried installing the 'generic cups printer', but again no options to print to b&w. any idea ? (i'm on 10.10)

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• D'après-vous, quels sont les smartphones les plus réussis sous Android ? Participez à notre sondage

  D'après-vous, quels sont les smartphones les plus réussis sous Android ? Participez à notre sondage La fragmentation d'Android est un problème délicat pour les développeurs. D'autant plus qu'il est double : des versions de l'OS pour smartphones d'un coté et pour tablettes de l'autre, et des versions différentes de l'OS au sein de chaque catégorie. A cette complexité s'en ajoute une autre (contrairement à iOS) : la diversité des hardwares. Dont la première pour les développeurs est la différence des tailles d'écran. Enfin (contrairement à Windows Phone dont l'UI (Metro) n'est pas modifiable par les constructeurs), Android permet à chaque industriel de personnaliser l'interfa...

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• Do you actually write 'clean code'?

  - by ykombinator

  I have seen some programmers tweaking their code over and over again not only to make it 'work good', but also to make it 'look good'. IMO, 'clean code' is actually a compliment indicating your code is elegant, perfectly understandable and maintainable. And the difference comes out when you have to choose between an aesthetically appealing code vs. code that's stressful to look at. So, how many of you actually write 'clean code'? Is it a good practice? What are the other benefits or drawbacks of this? EDIT: I came across the term 'girl-code' here.

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• Error [9783] Support for cores revisions 0x17 and 0x18 disabled by module

  - by iamzarnywoop

  At start up after my dell BIOS load i get the puprle screen and then a black screen and this at the top "[9783] Support for cores revisions 0x17 and 0x18 disabled by module... " sorry i think there's more to it and that's probably crucial but it goes SO fast sometimes and sometimes slower... I just wiped my laptop and installed 13.10 over it and ticked LVM at installation and log in automatically, idk if that would make a difference here... Any way i found someone else on Arch Linux had the same problem but I don't know how to solve it. https://bbs.archlinux.org/viewtopic.php?id=170588 Anyone know what this might be? Please help, new user..

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• forwarding my domain to ning site, vs paying for mapping. SEO value? [closed]

  - by myf

  Possible Duplicate: Could I buy a domain name to increase traffic to my site like this? hello, and thanks for your time to answer. really appreciate that! my domain url is keyword stuffed (homes for sale and the city name). does it make a difference if I foward that to my ning site, which is www.homesforsale(in city name).ning.com or is it just the same for SEO / pagerank value as paying ning for the proper url mapping. thanks so much!

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• How to run CLI commands from the launcher?

  - by user50849

  I press ALT+F2 key on my keyboard, and get the launcher HUD up. From there I enter a command as I would in a shell, specifically vlc ~/Music/* -Z. If done from a shell, vlc starts and begins to play music. However, when done from the launcher, VLC replies: File reading failed: VLC could not open the file "/home/[username]/Music/*". (No such file or directory) user Your input can't be opened: VLC is unable to open the MRL 'file:///home/[username]/Music/%2A'. Check the log for details. I can't quite figure out what the difference is.

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• Does Dropbox use a cronjob to sync up?

  - by Yko

  I was looking into lipsync on a Dropbox clone. I was looking at the diagram on how it works here. It shows that a cronjob is used to keep files in sync between client and server. Does that mean that every sec/min/hour, a cronjob runs and checks to see if there is a difference between client and server? Is that how Dropbox does it? If it does use a cronjob, what happens when you are in the middle of syncing and another cronjob runs? Does rsync (or additional libs) know how to handle this?

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• can't chmod on external hard disk?

  - by G. He

  I have an USB3.0 external hard disk, partitioned to 3 NTFS partitions. When I plug the hard disk in, the 3 partitions automatically mounted under /media. So far so good. I can read and write to files, or mkdir, etc on these partitions. But I can't do chmod/chown on any of the files/directories on these partitions. The owner:group always myself, and the mode are always 700 for directories and 600 for files. I have another partition on internal harddisk also mounted. That partition works fine. I looked the output of mount command, the only difference between mount options is that there is one extra 'default_permissions' on the external hard disks. Anyway I can set the owner:group and mode on these files and directories.

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• Why did I have to remove resolvconf to get dnsmasq to work again?

  - by lightxx

  Yesterday I upgraded to Precise and dnsmasq stopped working. That is, DNS queries to localhost were dnsmasq is listening (127.0.0.1) were refused. Removing resolvconf (apt-get remove resolvconf) and rebooting solved the issue (found that suggestion somewhere on Google). /etc/resolv.conf looked fine with and without resolvconf in place. No difference at all. Why would I use resolvconf? Are there any benefits? The Wikipedia article covering resolvconf sucks. Why did resolvconf interfere with dnsmasq? Is this a known issue?

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• Strange problem of wifi keeps droping every minute on Ubuntu 12.04

  - by user965884

  I am running ubuntu 12.04 on my samsung laptop but the wifi connection keeps dropping every minute. I have another dell laptop which also has ubuntu 12.04 but wifi works fine on that. And if I use my samsung laptop at office as its my office laptop wifi works fine. So, I don't understand what the problem is. I have googled it and found solution like set ignoring IPv6 setting but that still does not make any difference. So I don't understand where the problem is if its with my network provider or its with my laptop. I can't blame my network provider as wifi works fine on my other devices including Ipad, mobiles and dell laptop. Even I can't say clearly that its problem with my laptop as wifi works fine in my office. Previously I had ubuntu 13.04 on my samsung laptop and I was having the same issue so I uninstall it and install 12.04 and issues is still the same.

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• Boot prompt hyphens

  - by purjuntu

  Booting an Ubuntu DVD, pressing F6 and then ESC presents the boot prompt with the default kernel options, with the possibility of editing and adding extra options. Something like: kernel /casper/vmlinuz boot=casper quiet splash -- Questions: What's the meaning of the two hyphens? When adding an extra option (such as "toram" or "vga=791"), is there any difference between adding it BEFORE or AFTER the hyphens? When typing commands in Bash, two hyphens in a row means "options end here; anything that follows should be treated as an argument, even if it starts with a hyphen". But the hyphens must have another meaning at the boot prompt, as "toram" or "vga=791" really are options.

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• Le Web bientôt doté d'un nouveau langage ? CAS s'inspire du CSS pour proposer une définition des attributs des balises HTML dans une feuille

  Le Web bientôt doté d'un nouveau langage ? CAS s'inspire du CSS pour proposer une définition des attributs des balises HTML dans une feuille Tab Atkins Jr, un représentant de Google au sein du W3C (World Wide Web Consortium) vient de proposer à l'organisme un nouveau langage de script pour normalisation. Le langage CAS pour Cascading Attribute Sheets s'inspire grandement du CSS (Cascading Style Sheets), à la différence qu'il est basé sur un concept d'attributs HTML. L'idée de base autour de ce nouveau langage est que tout comme avec le CSS, les développeurs pourront définir dans un fichier des attributs pour les balises HTML, qui seront directement appliqués à l'ensemble ...

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• ASUS VX-6 Laptop Wireless not connecting

  - by user2152790

  Someone posted a script a couple days ago, here is my output.Pastebin I can see wifi SSIDs in network, but cannot connect to mine. The only time wifi worked on 13.10 was in the Live CD, but wifi stopped working as soon as install process started. Did below but made no difference. sudo apt-get install bcmwl-kernel-source sudo modprobe -rv brcmsmac sudo modprobe -v wl What I do next? I tried Software&Updates and it showed 1 proprietary driver in use. This sounds like a WPA/WPA2 issue? Wifi works when I tried Zorin OS 7.1, wifi always worked in windows 7.

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• Can I set command line executed games to open in a window instead of fullscreen?

  - by ajwhitaker822

  I really enjoy some of the free Linux games and just downloaded Cave Story, one of my all-time favorites. However, I can only play the game in full screen, 800X600 Resolution. I was wondering if I could run this program in a window instead of full screen. Is there a command or Unity plugin to do this? Also, would the same work to run SuperTux in a window as well? I'm running 12.04 if that makes any difference. Thanks for your help.

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• CSS&ndash;margin or padding

  - by woodbase

  I was beginning the implementation of a new design, and once again I found that my margin property on a div-tag, did not behave as I expected. So I decided to look for best practice when it comes to using margin or padding. What I found was this very short and concise description of the difference between the two: “Margin is on the outside of block elements while padding is on the inside. Use margin to separate the block from things outside it, padding to move the contents away from the edges of the block.” So what is best practice? Well it depends on the context. In my case I should have used padding…

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• Should we use python 2.6 or 2.7 or 3.x?

  - by lamwaiman1988

  The version of python which I am using is 2.6, and there is a 2.7 and 3.x. Usually I use python for some trivial program/snippet. I realize there are some major difference between 2.x and 3.x. I would really like to know, if I am going to make a bigger project with python, which version of python should I use? Should I upgrade to 2.7, or go to 3.x or stay with 2.6? The decision should be based on these terms: Number of user in the internet as a community. More users mean more open-source package and help from them. Functionality. Support from official development team. Compatibility for existing module/package. Thanks!

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• DropVox Records Voice Memos Right to Your Dropbox Account

  - by Jason Fitzpatrick

  DropVox is a clever and highly specialized application that, quite effectively, turns your iOS device into a voice recorder with Dropbox-based storage. Install the app, launch it, hit the record button, and your recording is uploaded to your Dropbox account in .m4a format as soon as you’re finished creating it. You can also configure DropVox to start recording immediately after launch and to continue recording if the device is locked or other applications are in use. Hit up the link to grab a copy. DropVox is currently $0.99 (50% off for a limited time) and works on the iPhone, iPad, and iPod Touch with microphone attached. DropVox [via Download Squad] HTG Explains: What’s the Difference Between the Windows 7 HomeGroups and XP-style Networking?Internet Explorer 9 Released: Here’s What You Need To KnowHTG Explains: How Does Email Work?

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• C++ function returning pointer, why does this work ? [migrated]

  - by nashmaniac

  So heres a simple c++ function what it does it take an array of characters as its argument and a integer n and then creates a new character array with only n elements of the array. char * cutString(char * ch , int n){ char * p = new char[n]; int i ; for(i = 0 ; i < n ; i++) p[i] = ch[i]; while(i <= n ){ p[i++] = '\0'; } return p ; } this works just fine but if I change char * p = new char[n]; to char p[n]; I see funny characters what happens ? What difference does the former make also p is a temporary variable then how does the function returns it alright ?

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• Compaq Presario R3000 randomly fails to boot on 11.10, 12.04, 12.10

  - by dlfuller

  I’m trying to figure what to do with random failures to boot. My old HP Presario R3000 with AMD Athlon XP-M sometimes boots, sometimes hangs with a blank screen during boot, and sometimes hangs on shutdown. After a few boot attempts it will finally boot to the GNU GRUB screen where I usually can select Recovery Mode, then select return to a normal boot, and the thing will startup and function normally. The pattern is not repeatable and seemed to start after upgrading from 11.04. Clean installs of 12.04 and 12.10 on newly-formatted hard drives make no difference. If this might be a clue, hangs on shutdown often stop at a line with: “pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3000-0x7fff: excluding 0x3000-0x30ff 0x3400-0x34ff 0x3800-0x38ff 0x3c00-0x3cff”. I did try the “acpi=off” modification from 11.10 randomly fails to boot on Compaq Presario R3000 with no change in these random boot failures. Any suggestions sure appreciated.

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• Dual boot (Win 7 & Ubuntu 13.10 clock problem

  - by peter

  I'm a "newbie" to Ubuntu, but I've been wrestling with this problem for several hours and don't seem to be able to solve it: When I set the time in Windows (Indianapolis, Eastern U.S. time zone) and then re-boot to Ubuntu, the computer time goes to Hawaiian time. When the time is set in Ubuntu, and the computer is rebooted to Windows the time is advanced by 5 hours. I've set the time in the BIOS, and it seems to make no difference. I've tried setting the time from "automatic" to "manual", all with the same result. Not a big problem, but it shows some underlying glitch. Could anyone explain?

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• What's the reason in your mind Exception are heavily used in Managed (C# and Java) language but not in C++?

  - by ZijingWu

  AFAIK, a lot of C++ projects don't allow exceptions and deny them in coding guidelines. I have a lot of reasons, for example, Exception is hard to handle correctly if your binary needs to be compiled by separate and different compilers. But it doesn't fully convince me, there is a lot of projects which are just using one compiler. Compared to C++, Exceptions are heavily used in C# and Java and the reason can only be that Exception are not bringing enough benefit. One point is Debugbility in practice. Exception can not get the call stack in C++ code, but in C# and Java you can get the call stack from Exception, it is significant and makes debugging easier. No-CallStack is not the fault of the Exception, it is the language difference , but it impacts the Exception usage. So what's the reason that exceptions are frowned upon in c++ programs?

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• What videoconferencing platforms work best for distributed software development teams?

  - by user11347

  Today I had a religious experience: I participated in a videoconference using a high quality Polycom system. This made a huge difference in communication quality -- people that I had a terrible time understanding previously now sounded like Shakespeare. Seeing a high quality video image was enormously helpful. I asked operations how much the Polycom cost and they said that it cost $20K new and $4K off eBay. So this solution doesn't work for people who work from home or who work in offices but are in groups of 3 or fewer people. My budget for a videoconferencing system is a few hundred dollars per person. Skype is not nearly good enough. And I haven't seen a consumer webcam that is good enough either. Does such a solution exist? I'm looking to collaborate both with people who are close by (in the same city but not in the same room) and far away (on different continents).

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• Importing Data From Excel Using SSIS - Part 1

  Recently while working on a project to import data from an Excel worksheet using SSIS, I realized that sometimes the SSIS Package failed even though when there were no changes in the structure/schema of the Excel worksheet. I investigated it and I noticed that the SSIS Package succeeded for some set of files, but for others it failed. I found that the structure/schema of the worksheet from both these sets of Excel files were the same, the data was the only difference. How come just changing the data can make an SSIS Package fail? What actually causes this failure? What can we do to fix it?

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• Syanptics Touchpad Won't Re-enable

  - by user71607

  I disabled my Synaptics touchpad while a key on my keyboard and now I can't get it to work again. When I press that key again it says the touchpad turns back on but will not work at all. Rebooting doesn't help, and I tried installing touchpad-indicator but when I try to enable from there it says that it enables, but the icon remains like it's disabled. The odd thing is that it works on the lock screen so I know the drivers aren't messed up, it's just a setting. Also, the touchpad works on guest mode but still nothing on my account. I tried using gconf to set the touchpad_enable to true and it worked, it sure set it. Doesn't make a difference though, my touchpad is still useless. Terminal commands I've used: gconftool-2 --set --type boolean /desktop/gnome/peripherals/touchpad/touchpad_enabled true synclient Touchpadoff=0 modprobe psmouse

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