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  • Build one to throw away vs Second-system effect

    - by m3th0dman
    One one hand there is an advice that says "Build one to throw away". Only after finishing a software system and seeing the end product we realize what went wrong in the design phase and understand how we should have really done it. On the other hand there is the "second-system effect" which says that the second system of the same kind that is designed is usually worse than the first one; there are many features that did not fit in the first project and were pushed into the second version usually leading to overly complex and overly engineered. Isn't here some contradiction between these principles? What is the correct view over the problems and where is the border between these two? I believe that these "good practices" are were firstly promoted in the seminal book The Mythical Man-Month by Fred Brooks. I know that some of these issues are solved by Agile methodologies, but deep down, the problem is still the principles still stand; for example we would not make important design changes 3 sprints before going live.

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  • Restoring Databases

    - by Grant Fritchey
    I like the way Mike Walsh phrased it: You're Only As Good as Your Ability To Restore. Ain't it the truth. You may be taking backups, incrementals, and log backups of your databases. You may have DBCC in place, and all that fun stuff. But if you haven't restored the database, what do you have? You don't know. The trick is, restoring databases takes up a heck of a lot of space on your servers. To test all your productions backups, you'd need a system with as much space as production. unless.. Ever heard of SQL Virtual Restore? Check it out. With this, you answer Mike's questions and validate your backups without having to have twice the amount of space. That's a win, and we all know, winning is better than losing.

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  • Charles Barkley syndrome

    - by dacracot
    Charles Barkley was an excellent basketball player, a hall of fame, and a dream team member. He played for the 76ers, Suns, and Rockets. Yet he never won an NBA championship. Some might argue this was because he was never surrounded by other players of his caliber, and in the NBA, you can't win on your own. So what does this have to do with programming? How many of you out there feel like Sir Charles? Leading your team in every category, KLOCs, bugs fixed, systems configured... Always the one pushing for improvements, upgrading systems, negotiating with customers... Feeling like you are carrying the team. Anger just under the surface. Only to retire eventually, without "the ring"1. 1: Keep in mind, Charles never blamed his team. He just performed at his best.

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  • Blank desktop when logging in via xrdp

    - by nitefrog
    I am trying to access Ubuntu 11.10 using Remote Desktop from a Win 7 machine. I installed xrdp. I launch the Windows remote desktop client and login in. I then get prompted for the user name and password. It then logs in, but all I see is the background, no menus, nothing. I have to kill remote desktop by closing it. Even if I right click , nothing. Any ideas??? The only reason I even went down the RDP road was that VNC would not work either, even after I enabled desktop sharing. I am in a bind as I need to connect to Ubuntu via Windows. In version 8 Ubuntu this was not an issue and it just worked.

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  • SQL SERVER Size of Index Table for Each Index Solution 3 Powershell

    Laerte Junior If you are a Powershell user, the name of the Laerte Junior is not a new name. He is the one man with exceptional knowledge of Powershell. He is not only very knowledgeable, but also very kind and eager to those in need. I have been attempting to setup Powershell for many days, [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • SQL SERVER Size of Index Table for Each Index Solution 3 Powershell

    Laerte Junior If you are a Powershell user, the name of the Laerte Junior is not a new name. He is the one man with exceptional knowledge of Powershell. He is not only very knowledgeable, but also very kind and eager to those in need. I have been attempting to setup Powershell for many days, [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Script at Startup

    - by OttoRobba
    I'm using 10.10 and I need to run a script in order to get a windows-like international keyboard layout - basically, it changes how dead keys work. (Original script from this page http://t.tam.atbh.us/en/win-us-intl-4-linux/ ) Since I can't seem to manage to get it going from boot, I have to run a custom script to launch any application. The script: export GTK_IM_MODULE=xim setxkbmap us intl xmodmap -e 'keycode 48 = dead_acute dead_diaeresis dead_acute dead_diaeresis acute diaeresis' application_name So if I put abiword in the application_name, it runs abiword respecting the keyboard script. Ideally, the original script would start at boot and then any applications I use would function with it - just like what happens if I run it first in Terminal (without the app_name line) and then run apps from it. I tried to make the script run from boot by adding it to /etc/rc.local but to no avail. Tried to add it to init.d but that also didn't work. If anyone can help, I'd be most grateful.

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  • How to install ubuntu-12.10-desktop along with windows 8 64bit

    - by Priyesh
    I have hp pavilion 15 n204tx, which came with pre-installed Ubuntu OS. I formatted it and installed Win 8 64bit. and created 3 + 1(system reserve) partition. 50GB for win8 50GB for Ubuntu remaining for my files and other is system reserve. But now i need ubuntu-12.10-desktop also, along with win8. Is there is a way to install ubuntu-12.10-desktop, without affecting my files and win8 on second 50GB partition. Is the installation method is same as of other similar questions here. Please answer and i don't know anything about commands posted on other answers here, i just started to learn UNIX. So kindly tell where and how to use commands, if any Thank you

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  • apt changelog for to-be installed packages

    - by ithkuil
    GUI update-manager is able to show the "changelog" of packages to-be installed (not downloaded yet). I also found out how to provide the .changelog files in the right place for update-manager to show them, and now I'm happy since I'm able to tell my clients that they can see changelogs of my custom packages directly from their gui. Unfortunately I'm not able to find any command line tool to do the same thing and that would be more useful on servers. From what I saw it seems that this convention (putting .changelog files directly alongside the .deb files in the apt repo) is a ubuntu specific extension. There are some debian resources (the reprepro man page for example) which point on a different way to store changelogs online, http://packages.debian.org/changelogs Does anybody know if there already exists a tool like apt-cache to show the changelogs from packages which are not yet installed (nor downloaded) ?

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  • the "additional drivers" shows nothing

    - by Yasser al-Zainy
    I started using Ubuntu 32 bit last week. I love it but I recognized there was a problem with the cooling system. the fan doesn't stop and slightly loud all the time (that wasn't the case while running with windows 7). I told a friend who claimed that it should be a drivers problem. My machine is dell inspiron n5110 and the official site recommends win 7 64 bit only. there's no support for linux. (the page showing the machine drivers and system recommendation I tried to fix the problem using the "additional drivers", it opens but it shows nothing (no drivers to activate, just the help and the close buttons) is there a way to fix this?

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  • Aktuell: Oracle Enterprise Manager 12c Release 4 ist da

    - by Ralf Durben (DBA Community)
    Ein neues Release für Oracle Enterprise Manager Cloud Control ist verfügbar. Es ist das Release 4, oder genauer die Version 12.1.0.4. Der Download steht für alle unterstützten Plattformen seit dem 03.06.2014 auf OTN zur Verfügung.Natürlich gibt es viele Neuerungen, daher können hier nur wenige aufgezählt werden: - Als Repository Datenbank wird jetzt auch die Datenbankversion 12c (als Non-CDB) unterstützt - Das Sicherheitsmodell für zusammengefasste Zieltypen (z.B. Gruppen) wurde geändert. Jetzt kann man Rechte auf die Member einer Grupper vergeben, ohne dass das gleiche Recht auf die Gruppe selbst vergeben werden müsste - Default Preferred Credentials stellen sicher, dass neue EM Benutzer auch ohne weitere Konfiguration arbeiten können - Der Bereich Cloud Management, also der Betrieb einer eigenen Cloud wurde stark weiterentwickelt. - Im Datenbankbereich können die AWR Daten der einzelnen Zieldatenbanken jetzt in ein zentrales AWR Warehouse übertragen und somit besser für längere Zeit gespeichert werden. Details zum neuen Release werden in Kürze hier in dieser Community besprochen.

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  • Problem in Kubuntu: Default browser never opens

    - by user170852
    I'm using Kubuntu, and I switched the default browser to my favourite one. The thing is, when I did this, both my Twitter clients stopped working. Now each and every Twitter client I download and install fails to open any web browser to finish my account authorization. It's impossible they're all broken, so I reset my default browser to rekonq and it works well as a default browser, but still can't login to twitter from any client. In fact, every button in every program that should open a browser window (like Amarok with the "like on last.fm" button) does nothing. So I think there may be a problem with my system but I can't figure out what is it. My user is not in the admin group (it's a shared user), I have an admin user but I only use it to install programs. Could that be the cause? Also, hitting alt+F2 and writing man:file (enter) opens a rekonq window normally.

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  • Lenovo B570 doesn't boot after installation

    - by Alan
    I install my Ubuntu 11.10 64 Bits in my Notebook Lenovo B570. (I remove Win 7). I have no problems to install. But at finish, when it start, it wont boot. It search for another boot device (Network, CD/DVD). Maybe it issue is about SCSI Hard Drive. I try in BIOS set compatible mode SCSI/ATA. It try locate another boot (Networks, CD/DVD). I try to enable compatible mode in BIOS SCSI - SATA and reinstall again. "Will ubuntu be the only os on your computer or is there a 2nd os?" A:Yes. I remove Windows 7 and use All disc to Ubuntu.

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  • Why are tools like git-svn that allow git to integrate with svn useful? [closed]

    - by Wes
    I have read these related questions: I'm a Subversion geek, why should I consider or not consider Mercurial or Git or any other DVCS? git for personal (one-man) projects. Overkill? ...and I understand why git is useful. What I don't understand is why tools like git-svn that allow git to integrate with svn are useful. When, for example, a team is working with svn, or any other centralised SCM, why would a member of the team opt to use git-svn? Are there any practical advantages for a developer that has to synchronize with a centralized repository?

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  • HTML5 für APEX Entwickler: Anwendungen der nächsten Generation

    - by Carsten Czarski
    HTML5 ist nicht umsonst eines der meistdiskutierten Themen in der Anwendungsentwicklung: Es eröffnet dem Anwendungsentwickler völlig neue Möglichkeiten zur Gestaltung von Web-Benutzeroberflächen. So ist es möglich, mit HTML5 auf das GPS eines mobilen Geräts zuzugreifen - aber das ist bei weitem nicht alles: Mit SVG und CANVAS-Objekten wird es möglich, frei auf der Browseroberfläche zu zeichnen - die FileReader API erlaubt es, vom Anwender ausgewählte Dateien noch vor dem Hochladen auszulesen. Diese Möglichkeiten erlauben es, völlig neue Anwendungen zu entwickeln - eben Anwendungen der nächsten Generation. Im Webseminar am 8. November wurden einige der Möglichkeiten von HTML5 vorgestellt und gezeigt, wie man sie in APEX-Anwendungen nutzen kann. Die Foliensätze und APEX-Beispielanwendungen sind ab sofort verfügbar: https://apex.oracle.com/folien Schlüsselwort: apex-html5

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  • Cannot mount a CIFS network share on Ubuntu over VPN

    - by Aron Rotteveel
    I have setup u VPN connection to our Windows 2008 server at the office and it seems to work fine. For some reason, however, I still am not able to access the network shares over a VPN connection using my standard fstab entries. When I am physically connected to the network, it works fine, but now when trying this over VPN I get the following error: mount error(110): Connection timed out Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) My /etc/fstab looks like this: //server2008/share /mnt/share cifs iocharset=utf8,credentials=/home/aron/.smbcredentials,uid=1000 0 0 As said, it works fine when physically connected, but over VPN it just wont work. Any help is appreciated.

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  • Which is more valuable in product development: an action-oriented or visionary bent?

    - by Marc
    As a software development professional in a fairly conservative large-firm, I always had a much more action-oriented bent, as my job was fairly stable and all that mattered was doing as I was told and completing tasks that were germane to the career of a benevolent dictator (i.e., my boss' boss). Now that I'm no longer working for "the Man", I find it just as important to use the left side of my brain and wrap my head around this whole "vision thing". Which do you think is more important for software product development in a small, yet feisty start-up: Knowing the path or walking (or running) it?

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  • Sign-On für APEX Anwendungen mit Kerberos

    - by Carsten Czarski
    Endbenutzer von APEX-Anwendungen arbeiten fast immer von einem Windows-PC aus - und sehr oft sind sie in einer Windows-Domäne eingeloggt. Da liegt es doch nahe, diesen Login auch für die APEX-Anwendung zu verwenden und sich nicht erneut anmelden zu müssen. Leider unterstützt APEX ein solches Verfahren nicht out-of-the-box. Nimmt man jedoch einige Open-Source Komponenten hinzu, so lässt sich die Anforderung leicht umsetzen. Niels de Bruijn von der MT AG hat ein Dokument zusammengestellt, welches die Vorgehensweise beschreibt: Single Sign-On für APEX Anwendungen mit Kerberos - schauen Sie einfach mal rein.

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  • How to open a MIB file in tkmib?

    - by l0b0
    I've tried to open several MIB files in tkmib without success. For example: $ sudo apt-get install tkmib $ wget http://www.mibsearch.com/vendors/Compaq/download/CPQHLTH-MIB $ tkmib CPQHLTH-MIB Click "walk", then you should get an error message like this: setting opts getaddrinfo: CPQHLTH-MIB No address associated with hostname error:snmp_new_session: Couldn't open SNMP session at /usr/lib/perl5/SNMP.pm line 475. unable to create session at /usr/lib/perl5/SNMP.pm line 547. Tk::Error: Can't call method "getnext" on unblessed reference at /usr/bin/tkmib line 506. main::snmpwalk at /usr/bin/tkmib line 506 Tk callback for .frame5.button2 Tk::__ANON__ at /usr/lib/perl5/Tk.pm line 250 Tk::Button::butUp at /usr/lib/perl5/Tk/Button.pm line 175 <ButtonRelease-1> (command bound to event) As I'm completely new to SNMP and MIB files, and man tkmib is sparse to say the least, what do I actually need to do to be able to work with this file?

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  • Update manager problem

    - by Alberto Favero
    I am trying to update to the LTS 12.04 and got the message: E:MMap dinâmico necessita de mais memória. Por favor aumente o tamanho de APT::Cache-Limit. Valor atual: 25165824. (man 5 apt.conf), E:Um erro ocorreu processando libmail-sender-perl (NovaVersão1), E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_lucid_universe_binary-i386_Packages, E:As listas de pacotes ou os arquivos de estado não puderam ser analisados ou abertos All updates are stuck now... What I must to do to solve this and upgrade to the 12.04 LTS? Thanks, Alberto

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  • Some websites are not opening in any web browser (firefox/chrome). What should I do? [closed]

    - by Jamal
    Some websites are not opening in my system. I am using Ubuntu 12.10. Earlier, when I was using Ubuntu 10.10,11.10 there was no such issue. The problem was started in ubuntu 12.04, but it remained the same even after formatting and installing ubuntu 12.10. I have tried Firefox as well as Chromium and I am sure the issue is not with the browser. same websites are opening perfectly with Windows. Google, Twitter and Ubuntu related websites are running perfect. Other websites like www.downrightnow.com, easy-mantra.com, facebook.com, sourceforge.net are not opening. Installed dual boot with win xp. Ubuntu 12.10 is 64 bit. Processor Intel core i3, RAM 4GB. $ cat /etc/resolv.conf <-- Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) -- DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN -- output --> nameserver 127.0.1.1

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  • Boot-Repair after messing up NTFS partition

    - by QuietThud
    I posted this question explaining what happened after I tried to create a new swap partition on a Win/Ubuntu dual-boot machine. I have since created a live-boot USB and installed Boot-Repair. I had it "recommend repairs", after which it tried repairing the wubi filesystems, which as far as I'm aware was not necessary. I'm not sure where to go from here; I don't care very much about backing up my files, I just want to be able to boot the machine. In the Advanced Options the "Repair Windows boot files" box is uncheckable both GRUB tabs are unclickable (I do have GRUB installed) Here is my Pastebinit with the details from the Boot-Repair. Please be as explicit as possible, as I am proving to be disproportionately bad at this type of task. Thank you! P.S. I keep seeing: cryptsetup: WARNING: failed to detect canonical device of overlayfs cryptsetup: WARNING: could not determine root device from /etc/fstab TestDisk: GPARTED:

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  • Understanding the Java Ecosystem

    - by syrion
    I have traditionally had the "luxury" of being a one-man development team. I've used Python extensively, have a reasonable command of Perl, PHP, and JavaScript. My problem is Java. I can write Java code. I'm not great at it--unlike Python, I rarely make use of anything unique to Java when I'm writing it. Furthermore, my experience is mostly in simple GUI/console programming. Unfortunately, I'm currently pursuing an IT degree where Java is the lingua franca. My database class is requiring that our projects be written in Java using servlets, and I just can't wrap my head around the ecosystem. Is there a good online overview of or tutorial on how the Java web ecosystem works? I have Thinking in Java, but it's mostly just the language itself (which I understand well enough to get by). I have looked at the Sun servlet tutorial, but it seems outdated.

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  • 12.10 cifs shares not mounting after modifying /etc/fstab

    - by Doug
    From Ubuntu 11.04 to 12.04 i've been able to mount my nas shares by first making directories in the /media folder, then : sudo gedit /etc/fstab to include the following line for each share I want to auto-mount; //servername/sharename /media/windowsshare cifs guest,uid=1000,iocharset=utf8,codepage=unicode,unicode 0 0 Now, however, I upgraded to 12.10, and suddenly I'm not able to mount the shares after saving /etc/fstab and sudo mount -a, giving me this error: Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) mount error(22): Invalid argument When in Nautilus, The shares are visible under the network tab, unmounted, and when I click on a share, I get the following message: mount: only root can mount //192.168.1.71/photos on /media/photos I checked to ensure smbfs was installed, and no problems there. I'm stumped.

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  • Phones, Nokia, Microsoft and More

    - by Bill Evjen
    The phone revolution that is under way at the moment is insanely interesting and continuously full of buzz about directions, failures, and promises. The movement started with Apple completely reinventing what a smart phone was all about and now we have the followers. Though – don’t dismiss the followers, they are usually the ones that come out with the leap frog products when most of the world is thinking about jumping on. Remember the often used analogy – the USA invented the TV – but it was Japan that took it to the next level and now all TVs are from somewhere else other than the USA. Really there are two camps for the phones – the Cool Kids and other kids that no one wants to hang out with anymore. When it comes to cool – for some reason, the phone is an important part of that factor. Everyone wants to show their phone and its configuration (apps installed, etc) to their friends as a sign of (1) “I have money” and (2) I have smarts/tastes/style/etc when it comes to my applications that are on my phone. For those that don’t know – the Cool Kids include: Apple – this is quite obvious as everything Apple produces is in the cool camp. Just having an Apple product on your person means you can dance. Google – this is one of the more interesting releases as they have created something called Android (which in it’s own right is a major brand in itself). Microsoft – you might be saying “Really, Microsoft is cool?”. I would argue that they are indeed cool as it is now associated with XBOX 360, Kinect, and Windows 7. Gone are the days of Bob and that silly paperclip. Well – that’s it. There is nobody else I would stick in that camp. The other kids that weren’t picked for that dodgeball team include: Nokia Motorola Palm Blackberry and many many more The sad part of all this is that no matter what this second camp does now, it won’t be able to get out of this bucket easily. They will always be associated as yesterday’s technology and that association will drive the sales of the phone purchasers of the world. For those in that group, the only possible way out is to get invited to the cool club by one of the cool club members in the hope that their coolness somehow rubs off. To me, this is the move that Nokia is making. They are at this point where they have realized that they don’t have the full scope of the required end to end solution to make this all work. They have the plants to build the phones and the reach of the retailers that sell what they have. What they are missing is the proper operating system for the new world of multi-touch form factor phones. Even the companies that come up with some sort of new operating system for this type of new device, they are still associated with the yesterday and lack the developer community behind them to be the real wave of adoption that this market needs. Think about that – this is a major different between Nokia/Blackberry when you compare it to the likes of Apple, Google, and Microsoft. These three powerhouses having a very large and strong development community that will eagerly take on new initiatives using the skillsets that they have already cultivated over the years of already working with the company. This then results in a plethora of applications that are then placed on an app store of some kind. The developer gets a cut and then Apple/Google/Microsoft then get their cut. It is definitely a win-win. None of the other phone companies and wannabies can provide the same results. What Microsoft was missing was the major phone manufactures coming on board to create and push forward with the phones that are required to start the wave. This is where Nokia can come in and help Microsoft. They have the ability to promote the Windows Phone operating system on a new wave of phones. This does mean that Nokia will sell phones, but they lose out on the application store that they might have been thinking about making some money on as well as controlling the end to end solution. What is interesting is in questioning to oneself if Microsoft will purchase Nokia. It really depends upon how they want to compete and with whom Microsoft views as the major competitor. For instance, they can purchase Nokia and have their own hardware company and distribution network for phones – thereby taking on a model that is quite similar to Apple. On the other hand, they could just leave it up to the phone hardware companies such as Nokia and others to build and promote phones in a model that is similar to Google. Both ways have pluses and minuses. If they own the phone manufacturer, they really can put some thought into the design and technical specifications of the phone that is really designed to exactly how they want it. Microsoft has shown that they have this ability – especially with the XBOX initiative they have done over the years. Think about how good and powerful they have moved forward with XBOX – and I am not talking about just copying what others are doing, but coming up with leapfrog products that are steps ahead of everyone else. Though, if they didn’t do it themselves, they could then leave it up to the phone manufacturers to drive each other to build better and better phones that run the Microsoft OS – competition drives better products. We have seen this with the Android line of phones that are out there on the market. I have read a lot about Nokia investors really upset about the new Microsoft relationship – but really, this is a great thing. I for one am a fan of this relationship (I am also a Nokia stock holder btw). This will mean better days for Nokia.

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