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Articles indexed Sunday November 3 2013

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• What are some Java patterns well-suited for fast, algorithmic coding?

  - by Casey Chu

  I'm in college, and I've recently started competing in programming competitions with my friends. These competitions involve solving algorithmic problems quickly. It's a lot of fun, but there's one problem: I'm forced to use Java. (My teammates use Java.) Background: I'm a self-taught JavaScript programmer, and it hurts to write Java code. I find it very verbose and inflexible, and I feel slowed down when having to declare types and decide which of the eighty list data structure to use. I'm also frustrated about the lack of functional programming features and how verbose using regular expressions, arrays, and dictionaries are. As an example, consider the problem of finding the length of the longest string of consecutive characters in a given string. So the string XX22BBBBccXX222 would give 4, for the string of four Bs. In Java, I'd have to loop through and manually count characters and manually keep track of the maximum. (That's at least as far as I'm aware -- I'm not as familiar with Java as I am with JavaScript.) In JavaScript, I'd find it like this: var max = Math.max.apply(Math, str.match(/(.)\1*/g).map(function (s) { return s.length; })); Much quicker and simpler, in my book. The question: what are some Java features, techniques, or patterns well-suited for fast, algorithmic coding?

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• Learning To Program After 9-5

  - by JoshuaPP

  I'm currently working as an IT Administrator but I'm thinking of making a slight career change into programming. I want to focus my time and effort into learning some web based languages but feel is it achievable when working full time to expect to make much progress after a long days work? I love to read, but this is sometimes a hindrance. I have read on some resources that you will never make much progress unless you quit your 9-5 and dedicated 6 months to getting a fundamental understanding. Any feedback would be great. Sorry if it's in the wrong area, I just signed up from my phone.

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• DOMDocument programming: a lot of little dilemmas, how to solve them?

  - by Peter Krauss

  I need elegance and performance: how to decide by the "best implementation" for each DOM algorithm that I face. This simple "DOMNodeList grouper" illustrate many little dilemmas: use iterator_to_array or "populate an array", when not all items need to be copied. use clone operator, cloneNode method or import method? use parentNode::method() or documentElement::method? (see here) first removeChild or first replaceChild, no avoids "side effects"? ... My position, today, is only "do an arbitrary choice and follow it in all implementations" (like a "Convention over configuration" principle)... But, there are another considerations? About performance, there are some article showing benchmarks? PS: this is a generic DOM question, any language (PHP, Javascript, Python, etc.) have the problem.

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• Why does Clojure neglect the uniform access principle?

  - by Alexey

  My background is Ruby, C#, JavaScript and Java. And now I'm learning Clojure. What makes me feel uncomfortable about the later is that idiomatic Clojure seems to neglect the Uniform access principle (wiki, c2) and thus to a certain degree encapsulation as well by suggesting to use maps instead of some sort of "structures" or "classes". It feels like step back. So a couple of questions, if anyone informed: Which other design decisions/concerns it conflicted with and why it was considered less important? Did you have the same concern as well and how it end up when you switched from a language supporting UAP by default (Ruby, Eiffel, Python, C#) to Clojure?

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• Are CQRS/DDD/Event Sourcing and REST compatible?

  - by Robin Green

  REST seems to promote the idea of a canonical URL for a resource, and PUTing/POSTing back a modified representation of that resource in order to change it. However, with CQRS - Command Query Responsibility Segregation - one can theoretically have a completely different "API" for reading and for writing, which seems to conflict with the REST ideal of one URL for a resource, and no RPC-style "verbs inside the request body". DDD and Event Sourcing sometimes go together with CQRS, which is why I mention them in this question. So, can CQRS be used together with REST? Or is it against the REST way of doing things? What about DDD? And Event Sourcing? Can they be used with REST?

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• Why is there a "new" keyword in Go?

  - by dystroy

  I'm still puzzled as why we have new in Go. &Thing{} is as clear and concise as new(Thing) to Go coders and it uses only constructs you often use elsewhere. It's also more extensible as you might change it to &Thing{3} or &Thing{Feets:7}. In my opinion, having a supplementary keyword is costly, it makes the language more complex and adds to what you must know. And it might mask to newcomers what's behind instantiating a struct. It also makes one more reserved word. So what's the reasoning behind new ? Is it something useful ? Should we use it ?

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• Is there a better way to consume an ASP.NET Web API call in an MVC controller?

  - by davidisawesome

  In a new project I am creating for my work I am creating a fairly large ASP.NET Web API. The api will be in a separate visual studio solution that also contains all of my business logic and database interactions, Model classes as well. In the test application I am creating (which is asp.net mvc4), I want to be able to hit an api url I defined from the control and cast the return JSON to a Model class. The reason behind this is that I want to take advantage of strongly typing my views to a Model. This is all still in a proof of concept stage, so I have not done any performance testing on it, but I am curious if what I am doing is a good practice, or if I am crazy for even going down this route. Here is the code on the client controller: public class HomeController : Controller { protected string dashboardUrlBase = "http://localhost/webapi/api/StudentDashboard/"; public ActionResult Index() //This view is strongly typed against User { //testing against Joe Bob string adSAMName = "jBob"; WebClient client = new WebClient(); string url = dashboardUrlBase + "GetUserRecord?userName=" + adSAMName; //'User' is a Model class that I have defined. User result = JsonConvert.DeserializeObject<User>(client.DownloadString(url)); return View(result); } . . . } If I choose to go this route another thing to note is I am loading several partial views in this page (as I will also do in subsequent pages). The partial views are loaded via an $.ajax call that hits this controller and does basically the same thing as the code above: Instantiate a new WebClient Define the Url to hit Deserialize the result and cast it to a Model Class. So it is possible (and likely) I could be performing the same actions 4-5 times for a single page. Is there a better method to do this that will: Let me keep strongly typed views. Do my work on the server rather than on the client (this is just a preference since I can write C# faster than I can write javascript).

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• Control Media via Arduino

  - by Ohad

  I want to create an application that controls the volume, play next\last, stop\play and things like this (I don't know what they called) like in a keyboard. I have tried to find how to do this with Python\Java but I couldn't find how. The main idea is (if some-one knows what is arduino) to connect it to my PC (Ubuntu) and to get from it signals that gives me values and with this values to be able to change the volume and to do next song\video. Thanks to any one who help :)

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• How can I install Ubuntu on a Compaq DC7900?

  - by lemba

  I have an HP Compaq dc7900 Convertible Minitower from 2006: 80GB (3.5”) SATA 3.0GB/s with NCQ and Smart IV Intel Core 2 Duo E8500 I can install Ubuntu on it from a USB stick and everything seems to work fine, but when I finish and reboot the pc, grub will be shown but When I continue I get just a black screen with a blinking cursor I tried Linux Mint and OpenSuse as well but it seems there is something forbidden in the Bios. Installing Windows 8 works fine.

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• Internet Timeouts with TP-Link TL-WN821N wireless usb stick - existing solutions dont work

  - by Sheena

  I'm running Ubuntu12.04 and I'm trying to get a TP-Link TL-WN821N to work. The solution from Internet Timeouts with TP-Link TL-WN821N v2 wireless usb stick didn't work for me. Neither has anything else... I've installed rtl8192cu as per instructions I found elsewhere to no avail. The symptoms I am experiencing are: When I plug in the device the PC can see and connect to wireless networks fine. The network I'm using has internet access and the signal strength is pretty strong. I can't ping and I can't browse the internet (timeout). Any ideas? I'm not sure what the next step would be or what information would be useful at this point.

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• A rather long question about installation/uninstall

  - by user2364312

  Ok so here's the deal guys, last week I decided I want to install Ubunutu again because I really missed it. (Last time I had an ubunutu was 7.somehting) I downloaded 12.04 and isntalled it via bootable usb device. Knowing how dual boots works I cleared up some space on my hard disc before hand using the windows 7 built in disc manager. During Ubunutu's installation I thought that by choosing "Install Ubuntu alongside Windows 7" will automatically just use the space I cleared before, but apperentaly it did not since that partition is still 100% free space. On what partition is Ubunutu installed when using that method? And how can I uninstall it to re-install it back on the space I cleared up for it? Thank you very your time reading and helping!

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• ubuntu 13.10 kvm binary is deprecated, please use qemu-system-x86_64

  - by ??1986

  I just upgrade from 13.04 to 13.10 and I have this issue when I run my KVM Unable to complete install: 'internal error: process exited while connecting to monitor: W: kvm binary is deprecated, please use qemu-system-x86_64 instead char device redirected to /dev/pts/10 (label charserial0) failed to initialize KVM: Device or resource busy Detail Error: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/create.py", line 1983, in do_install guest.start_install(False, meter=meter) File "/usr/lib/python2.7/dist-packages/virtinst/Guest.py", line 1246, in start_install noboot) File "/usr/lib/python2.7/dist-packages/virtinst/Guest.py", line 1314, in _create_guest dom = self.conn.createLinux(start_xml or final_xml, 0) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2892, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error: process exited while connecting to monitor: W: kvm binary is deprecated, please use qemu-system-x86_64 instead char device redirected to /dev/pts/8 (label charserial0) failed to initialize KVM: Device or resource busy

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• Problems in creating click package for native application

  - by Swordfish90

  Hello everyone I've tried may times to package a native click application mainly following this tutorial: http://notyetthere.org/?p=316 The procedure works and I'm able to execute the binaries both on phones and desktops. The problems start when I install the click package. The application is launched but the game is not working (the "gamefield" is not loaded). The only error message that is given is that versions of localstorages are not compatible (that is impossbile, because it never changed). I suspect that the problem is related to apparmor but I have no proof of that. The source code of the application is available here: https://launchpad.net/ubuntu-netwalk Thank you in advance to everyone...

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• Autostart desktop applications without session login

  - by derekcentrico

  I understand the idea of startup applications when starting a session (ie How do I start a program automatically when I boot?). However, I'm trying to have desktop applications for multiple users start when the computer reboots/starts. Some apps I'm aiming for are Google Music Manager, remote desktop server for each session, etc. How can I either have multiple user sessions launch on boot to get these apps going -or- have them launch some other way for those users? Right now I have my primary user automatically login to start its session and related apps...

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• Boot Ubuntu from a bootable USB hangs on purple screen

  - by user210946

  I recently bought a laptop (Lenovo Y410P) with Windows 8 pre-installed and I'm trying to dual boot Windows 8 and Ubuntu 13.0. I created a bootable usb using Pendrive. Then I changed the Boot Mode to Legacy Support and the boot order so it boots from the flash storage first. When I restarted the computer, I got the error message "SYSLINUX 4.06 EDD 2012-10-23 Copyright (c) 1994-2012 H. Peter Anvin et al" and it just hung there. Fair enough. After some googling I formatted my flash drive in FAT format instead of FAT32. The "SYSLINUX..." error message is gone but now it hangs on a purple screen http://imgur.com/WbdXpZN Does anyone have a suggestion what to do here? I've looked at various posts but none of them seems to have a solution that the author confirmed it worked.

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• How to setup a wifi ap hotspot with ipv6 support?

  - by keyman

  How to setup a wifi ap (access point mode) hotspot, with IPv6 support? I've set up a hotspot according to the guide to wifi ap hotspot setup and it works fine. But via the hotspot I failed to visit IPv6 websites. How can I setup a hotspot able to share Ipv6 Internet access? Thanks! Further: Actually I've tried to setup IPv6 forwarding and masquerading. First enabling IPv6 forwarding: echo 1 | sudo tee net/ipv6/conf/default/forwarding Then I tried to execute: sudo ip6tables -t nat -A POSTROUTING -s 2001:db8:0:1::/64 -o eth0 -j MASQUERADE But it gave me an error: ip6tables v1.4.12: Couldn't load target `MASQUERADE':No such file or directory I searched through the Internet but I get confused. So I'm here for help. Thanks!

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• mismatch of version of libkdcraw20 and libkdcraw-data

  - by naveen jankar

  I'm using Ubuntu 12.04 LTS. When I'm installlin digiKam, I'm getting a mismatch in the versions of libkdcraw20 and libkdcraw-data wanted by it and that available in the repositories. It wants version 4.8.5-0ubuntu0.2 (or in other words that is the latest version according to synaptic) but the available one is 4.8.5-0ubuntu0.3 in both cases. Is there a work-around? Or how do I request the Ubuntu managers to rectify this? addenda On Synaptic i selected digikam to be installed. it downloaded all the dependencies but the 2 in question were not found - the message it gave "W: Failed to fetch security.ubuntu.com/ubuntu/pool/main/libk/libkdcraw/… 404 Not Found [IP: 91.189.91.13 80]". I google-searched the 2 files in the repositories to find that the version available there is ubuntu0.3 instead of ubuntu0.2.

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• Cinnamon Settings blank after update

  - by Seth Balmore

  Using Ubuntu 12.04 with the cinnamon desktop, I installed the most recent updates and now when I open "System Settings" the entire window appears as a blank white screen. The headers for APPEARANCE, PREFERENCES, and HARDWARE are present, but the usual icons for *Background, *Hot Corners, *Printers, etc. are no longer visible. Some of these settings can still be altered via the terminal: cinnamon-settings backgrounds cinnamon-settings applets cinnamon-settings mouse and touchpad But other commands, such as cinnamon-settings hot corners are met with an error. This is obviously a problem with cinnamon, so I just want to bring it to attention and find out when they plan on fixing the bug. A workaround can be found on the web, but it seems way to risky to rely on.

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• GNOME Desktop fonts problem debacle

  - by Diogenes Lantern

  I didn't get an answer but I wasn't doing anything and this is an interesting topic. In Ubuntu 12.04, opening a file in gedit or I am working on the command line, in dpkg, I get returned the error "locale not supported, falling back to default "C" libraries", and the one below, Gtk-WARNING **: Locale not supported by C library. Using the fallback 'C' locale. The locales were not set correctly, and locale LANG and LANGUAGE were the culprits. I picked my way through this. The answer, correct below.

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• Chrome and Catalyst - no tab text

  - by Martin Fejes

  I just installed Ubuntu, updated, installed AMD proprietary drivers (for my Radeon HD6870) and noticed that some (most) of the tabs in Google Chrome don't have text, only the favicon. My first idea was that maybe 13.10 may have some issues with the new drivers so I switched to the normal driver instead of the beta one. It was not good. Okay then, I put back the open source drivers. It worked. Okay, it's strange. Let's install Ubuntu Gnome to see if it's Unity. No it was not. Let's install Ubuntu 13.04. Same behavoir. By this time I was desperate. I installed Fedora, the problem was there. Now I'm back to Ubuntu 13.10, but am out of ideas. Could anyone help me, please? P.s.: I can upload a screenshot, if needed.

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• Using Movemail with Thunderbird on Ubuntu

  - by rxt

  I'm trying to read local mail with Thunderbird on Ubuntu (with both 12.04 and 13.04). I've followed the instructions found here: How can I access system mail in /var/mail/ via thunderbird? I can read mail on the system using alpine or vim, so I know the mailbox is not empty. When I click the get-mail button, nothing happens. I see no Inbox (or any folder structure) for the specific account. I've set the rights for /var/mail to 1777. Settings server name: localhost username: john How can I get this working? Okay, considering the extra bounty, I would like to get this working like normal mail. The accepted answer from Qasim resulted in a much more usable situation than before - opening mail in Thunderbird with layout. I still face three problems though. When new mail is received in the mailbox, Thunderbird won't see this until after I restart Thunderbird. When Thunderbird is restarted, all mail is reset to unread and deleted mail is undone. This is probably because Thunderbird reads the mail from the /var/mail/www-data file, but doesn't update this file. So after restarting, it simply reads this file again, with the new mail and all old mail. This is probably a postfix issue: mail is sent out to existing mail addresses, but cannot be delivered because the receiving mailserver cannot be reached. This results in "Undelivered mail returned to sender". Only one mailserver can be reached: localhost. Because this is a test system, I don't want real customers to receive mail. I've blocked mail ports in UFW to be sure. When opening the returned mail, I can scroll down and then I see the original mail with proper layout. So I can read the mail, see if the proper images are included, and for me that's workable. Having to restart TB to read new mail - I know when new mail arrives, so I know when to restart. Having old mail restored after a restart - not big problem as well. I can delete the mail file if it gets too much. I know how it works, but it would be nice if it worked like normal.

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• How to fix E: Internal Error, No file name for libc6

  - by Loren Ramly

  How to fix E: Internal Error, No file name for libc6, Like that will show If I do: $ sudo apt-get upgrade or $ sudo apt-get install package This is example : $ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: ginn hplip hplip-data libdrm-dev libdrm-intel1 libdrm-nouveau1a libdrm-radeon1 libdrm2 libgrip0 libhpmud0 libkms1 libsane-hpaio libunity-2d-private0 libunity-core-5.0-5 linux-generic-pae linux-headers-generic-pae linux-image-generic-pae printer-driver-hpcups printer-driver-hpijs unity unity-2d-common unity-2d-panel unity-2d-shell unity-2d-spread unity-common unity-services The following packages will be upgraded: alsa-base firefox firefox-globalmenu firefox-gnome-support firefox-locale-en icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-7-jre-jamvm libdbus-glib-1-2 libdbus-glib-1-dev libgnutls-dev libgnutls-openssl27 libgnutls26 libgnutlsxx27 libssl-dev libssl-doc libssl1.0.0 linux-sound-base openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib openjdk-7-jdk openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib openssl sudo 27 upgraded, 0 newly installed, 0 to remove and 26 not upgraded. 3 not fully installed or removed. Need to get 0 B/126 MB of archives. After this operation, 3,072 B of additional disk space will be used. Do you want to continue [Y/n]? y E: Internal Error, No file name for libc6 I have follow instruction from here E: Internal Error, No file name for libssl1.0.0 . Which do: sudo apt-get update sudo apt-get clean sudo apt-get install -fy sudo dpkg -i /var/cache/apt/archives/*.deb sudo dpkg --configure -a sudo apt-get install -fy sudo apt-get dist-upgrade But stuck with same error E: Internal Error, No file name for libc6 when do command sudo apt-get install -fy. And I've been looking on google, but have not been successful until now. Thanks.

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• How to install iodbc in Ubuntu 12.10

  - by Hanynowsky

  I need to install the library iodbc (depends on libodbc2) in my Quantal machine. Yet there is creepy dependency problem. This was replaced somehow by unixodbc which I don't have, installed. Here is what I get when I try to install : sudo apt-get install libiodbc2-dev 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: libiodbc2-dev : Depends: libiodbc2 (= 3.52.7-2build2) but it is not going to be installed Depends: iodbc (= 3.52.7-2build2) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I can tell that iodbc conflicts with odbcinst. Yet, I cannot remove it due to the following: sudo apt-get remove odbcinst Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: akonadi-backend-mysql calligra-l10n-engb kde-l10n-engb kdevelop-l10n kdevelop-php-docs-l10n kdevelop-php-l10n libakonadi-kabc4 libakonadi-notes4 libakonadiprotocolinternals1 libboost-thread1.49.0 libdmtx0a libgpgme++2 libkcalcore4 libkdgantt2 libkholidays4 libkimap4 libkldap4 libkmbox4 libkmime4 libkolabxml0 libkpgp4 libkresources4 libksieve4 libprison0 libqgpgme1 libqrencode3 libxerces-c3.1 Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: akonadi-server k3b k3b-i18n katepart kde-runtime kdelibs-bin kdelibs5-plugins kdepim-runtime kdepim-strigi-plugins kdepimlibs-kio-plugins kdoctools kget kmag kmail kmix kmousetool ksystemlog kubuntu-debug-installer language-pack-kde-ar language-pack-kde-en libakonadi-calendar4 libakonadi-contact4 libakonadi-kcal4 libakonadi-kde4 libakonadi-kmime4 libcalendarsupport4 libincidenceeditorsng4 libk3b6 libkabc4 libkactivities-bin libkactivities6 libkalarmcal2 libkatepartinterfaces4 libkcal4 libkcalutils4 libkcddb4 libkde3support4 libkdepim4 libkdepimdbusinterfaces4 libkdewebkit5 libkemoticons4 libkfile4 libkgapi0 libkhtml5 libkio5 libkleo4 libkmanagesieve4 libkmediaplayer4 libknewstuff3-4 libknotifyconfig4 libkolab0 libkonq-common libkonq5abi1 libkontactinterface4 libkparts4 libkpimidentities4 libkpimtextedit4 libkpimutils4 libkprintutils4 libksieveui4 libktexteditor4 libktnef4 libktorrent4 libkworkspace4abi2 libkxmlrpcclient4 libmailcommon4 libmailimporter4 libmailtransport4 libmessagecomposer4 libmessagecore4 libmessagelist4 libmessageviewer4 libmicroblog4 libnepomuk4 libnepomukcore4abi1 libnepomukquery4a libnepomuksync4 libnepomukutils4 libplasma3 libsoprano4 libtemplateparser4 libvirtodbc0 nepomuk-core odbcinst odbcinst1debian2 plasma-scriptengine-javascript qapt-batch soprano-daemon virtuoso-minimal 0 upgraded, 0 newly installed, 89 to remove and 0 not upgraded. After this operation, 126 MB disk space will be freed. Do you want to continue [Y/n]? Other info: Why do the "iodbc" and "libmyodbc" packages conflict with each other? The root problem is that I need to use a new feature introduced in the latest MySQL Workbench builds (DB Migration) which uses odbc for that matter. Here is what Mysql doc says about it : Linux The Migration Wizard uses iODBC as a driver manager for all of its ODBC connections in Linux. This may give you some troubles because most Linux distributions provide ODBC drivers compiled against unixODBC. This is another driver manager not supported by MySQL Workbench so you won’t be able to use those drivers unless you compile them against iODBC. Here’s what you should do. Make sure that you have iODBC installed. If you are using Debian, Ubuntu or another Debian based distro, type this command in your terminal: $ sudo apt-get install iodbc libiodbc2-dev libpq-dev libssl-dev For RPM based distros (RedHat, Fedora, etc.) type this command instead of the previous one: $ sudo yum install iodbc iodbc-dev libpqxx-devel openssl-devel Now we need to install the PostgreSQL ODBC drivers. Download the psqlODBC source tarball from here. Use the latest version available for download. As of this writing the latest version corresponds to the file psqlodbc-09.01.0200.tar.gz. Extract this tarball to a directory in your hard drive and open a terminal and cd into that directory. Type this in the terminal window: $ ./configure --with-iodbc --enable-pthreads $ make $ sudo make install Verify that you have the file psqlodbcw.so in the /usr/local/lib directory. This package seems to pose the problem probably: dpkg -s odbcinst1debian2 Package: odbcinst1debian2 Status: install ok installed Priority: optional Section: libs Installed-Size: 241 Maintainer: Ubuntu Developers <[email protected]> Architecture: amd64 Multi-Arch: same Source: unixodbc Version: 2.2.14p2-5ubuntu4 Replaces: unixodbc (<< 2.1.1-2) Depends: libc6 (>= 2.14), libltdl7 (>= 2.4.2), odbcinst Pre-Depends: multiarch-support Breaks: libiodbc2, libmyodbc (<< 5.1.6-2), odbc-postgresql (<< 1:09.00.0310-1.1), tdsodbc (<< 0.82-8) Conflicts: odbcinst1, odbcinst1debian1 Description: Support library for accessing odbc ini files This package contains the libodbcinst library from unixodbc, a library used by ODBC drivers for reading their configuration settings from /etc/odbc.ini and ~/.odbc.ini. . Also contained in this package are the driver setup plugins, which describe the features supported by individual ODBC drivers. Homepage: http://www.unixodbc.org/ Original-Maintainer: Steve Langasek <[email protected]> I have no broken packages:

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• What is the significance of '*' (star, asterisk) in the file listing results?

  - by vfclists

  I have noticed that some of my files have an asterisk at end. Does the asterisk at the end have any particular significance? I think they are mostly executable and displayed in green by the ls command. You will see that ./bkmp* and ./bkmp0* have an asterisk at the end. They are executable bash scripts. Here's my output: drwxr-xr-x 7 username username 4096 Oct 2 18:28 ./ drwxr-xr-x 8 root root 4096 Oct 2 09:25 ../ -rw-r--r-- 1 username username 3724 Sep 22 03:06 .bashrc -rwxr--r-- 1 username username 319 Sep 22 03:42 .bkmp* -rwxr--r-- 1 username username 324 Sep 29 23:30 .bkmp0* drwx------ 2 username username 4096 Sep 17 13:52 .cache/ -rw-r--r-- 1 username username 675 Sep 17 13:37 .profile drwx------ 2 username username 4096 Sep 22 10:10 .ssh/ drwx------ 2 username username 4096 Sep 24 19:49 .ssh.local/ drwxr-xr-x 2 username username 4096 Sep 22 04:10 archives/ drwxr-xr-x 3 username username 4096 Sep 24 19:51 home/ -rw-r--r-- 1 username username 27511 Sep 24 19:51 username_backup.20120924_1908.tar.gz

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• Copying an SSH Public Key to a Server

  - by Nathan Arthur

  I'm attempting to setup a git repository on my Dreamhost web server by following the "Setup: For the Impatient" instructions here. I'm having difficulty setting up public key access to the server. After successfully creating my public key, I ran the following command: cat ~/.ssh/[MY KEY].pub | ssh [USER]@[MACHINE] "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys" ...replacing the appropriate placeholders with the correct values. Everything seemed to go through fine. The server asked for my password, and, as far as I can tell, executed the command. There is indeed a ~/.ssh/authorized_keys file on the server. The problem: When I try to SSH into the server, it still asks for my password. My understanding is that it shouldn't be asking for my password anymore. What am I missing?

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