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  • Five years old Ubuntu system - dist-upgrades always went fine, however some tasks remain

    - by knb
    I have a PC with a current Ubuntu distribution installed. I've upgraded many times since 5.10. It always went well, however some tools or features were kind of left behind in a unsatisfactory state: grub to grub2 - is it an really necessary to switch the boot loader some time to grub2. Upgrading this scares me abit. I still have ext3 devices - is it worth upgrading to ext4? should I wait for btrfs? hibernation and suspend- it only worked in 5.10, since 6.04 it was messed up. Should I really care? Any chance to repair this myself? Simply by cleanup or hacking config files. It is a desktop PC after all. So energy saving functionality is not really needed. I am using vmware workstation 6.5 and the latest kernel that supports it is 2.6.32. This is my default kernel now, ignoring 2.6.35. Am I missing anything important in the new kernel now?

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  • TDD, new tests while old ones not implemented yet

    - by liori
    I am experimenting with test-driven development, and I found that I often come to a following situation: I write tests for some functionality X. Those tests fail. While trying to implement X, I see that I need to implement some feature Y in a lower layer of my code. So... I write tests for Y. Now both tests for X and Y fail. Once I had 4 features in different layers of code being worked on at the same time, and I was losing my focus on what I am actually doing (too many tests failing at the same time). I think I could solve this by putting more effort into planning my tasks even before I start writing tests. But in some cases I didn't know that I will need to go deeper, because e.g. I didn't know the API of lower layer very well. What should I do in such cases? Does TDD have any recommendations?

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  • How to purge old links in google from an old domain.

    - by jbcurtin
    Hey all, Recently, I uploaded a new site to an existing domain and I'd like to figure out how I can forward all links to said domain to a new domain. I'm looking for a wordpress solution if possible, but in the end I I seem myself writing a small header script that I will paste into ever directory's index file saying header('Location:http://xxx.yyy.zzz') Is there a cleaner way to do this without having to resort to managing the whole file structure? No, I do not have access to the apache runtime. Unfortunately it is a shared-host server. Thanks in advance.

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  • LAG function – practical use and comparison to old syntax

    - by Michael Zilberstein
    Recently I had to analyze huge trace – 46GB of trc files. Looping over files I loaded them into trace table using fn_trace_gettable function and filters I could use in order to filter out irrelevant data. I ended up with 6.5 million rows table, total of 7.4GB in size. It contained RowNum column which was defined as identity, primary key, clustered. One of the first things I detected was that although time difference between first and last events in the trace was 10 hours, total duration of all sql...(read more)

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  • Old school trick that I forgot

    - by DavidMadden
    If you have to support some older Winforms you might like to remember this.  When opening a MessageBox to display that the user entered incorrect information, if you are doing so from a dialog, catch the DialogResult of the MessageBox and then set  this.DialogResult = DialogResult.None; to prevent the dialog from closing if you want the user to try again.  Otherwise, it will close the dialog box and return to the section of code that called it.Note:  You do not have to catch the DialogResult from the MessageBox.  You can still set this after the return from the call to the MessageBox.  Just make sure to do either but exiting the body of the dialog itself.

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  • LAG function – practical use and comparison to old syntax

    - by Michael Zilberstein
    Recently I had to analyze huge trace – 46GB of trc files. Looping over files I loaded them into trace table using fn_trace_gettable function and filters I could use in order to filter out irrelevant data. I ended up with 6.5 million rows table, total of 7.4GB in size. It contained RowNum column which was defined as identity, primary key, clustered. One of the first things I detected was that although time difference between first and last events in the trace was 10 hours, total duration of all sql...(read more)

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  • How to introduce a computer illiterate 50-year old to programming [closed]

    - by sunday
    The other day my dad asked me a question that I would have never expected from him. "How can I learn C++?" My dad is turning 56 this year and computers are a distant concept for him. He doesn't know how to use a phone very well besides calling numbers (no speed dial or contacts); though he has started to learn computers a little better - to the point that he knows how to open the internet (in Windows) and browse around (and has successfully completed several job applications entirely on his own online, of which he was offered positions too). But still, these are too narrow-windowed experiences to mean much, really. While he may not have the background, my dad knows how to read. And I mean reading as a skill, not just an ability. He has little to no college education (financial problems, family, etc.) and was fortunate enough to finish high school, but still taught himself to become a master electrician and has been one for almost 30 years now. He did the same with guitar, learning to play at a very professional level and has been praised for his skill. In high school, he picked up a weight lifting book - and was the only person in his high school at the time to qualify officially as an "athlete" by national standards. In all cases, he just needed something to read. Something to teach him. He absorbs information like a sponge. I have no doubt in my dad's motivation or capability of doing this, so my general goal is simply: Get my dad into the world of computers, and get him on the road to programming. I strongly believe that once I get him through the fundamentals, his drive and reading skill will keep him going on this own. So I'm asking you all: where should I start with all this? And what are the best resources out there? Should I get him to start Linux instead of Windows? Is C++ a bad idea? Remember, he needs to (IMO) learn computers first, and then get that first grasp (the "Hello world" experience) of programming. For money's sake and at top preference, I'd like free online resources that he can read, but by all means any good suggestions in print or paid-for-online are welcome (that I could possibly look into later to purchase). And also, I intend to start him off with C++ (no Python, Java, etc.), because I know it the best and will be able to help him along the way with code. (I have minimal knowledge right now in other languages). Edit: I'm getting a lot of persistent suggestions to use Python. The only reason I wanted to do C++ is that I KNOW it and can be THERE when my dad needs help. My VERY FIRST exposure to programming ever was Java. I learned Java, and I got good at it. I open to other suggestions, but please provide an effective application of your suggestions. EDIT #2: I understand my approach/thinking/knowledge could be lacking here. I'm a sophomore level undergraduate CS major. If you don't agree with anything in my post, tell me why - give me ideas, information - that's why I'm asking in the first place. To narrow down my general goal to specific reachable goals.

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  • backup without overwriting old backups

    - by AbsentasLT
    I'm using Ubuntu server 14.04 to backup all data from '/mnt/test/ folder' to '/home/john/' with TAR and archive to stuff.tar.gz and to make it to backup automatical. I use cron to backup it every week so what if i want to use cron to create an additional backup file instead of overwriting the existing one? So, after month I'd have 4 backups, each with a unique name. Is there a way? Script ar other backup tool what would do that?

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  • Get rid of old repos?

    - by Adobe
    I'm using saucy: ~: lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 13.10 Release: 13.10 Codename: saucy but when I do sudo apt-get update ubuntu still looks at the raring: Hit http://ppa.launchpad.net raring/main amd64 Packages Hit http://ppa.launchpad.net raring/main i386 Packages That's strange... I definetely don't have in /etc/apt/sources.list, but there's a lot of raring stuff in /etc/apt/sources.list.d/. How do I remove it? (I think it longers my updates)

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  • Javascript redeclared global variable overrides old value

    - by Yousuf Haider
    I ran into an interesting issue the other day and was wondering if someone could shed light on why this is happening. Here is what I am doing (for the purposes of this example I have dumbed down the example somewhat): I am creating a globally scoped variable using the square bracket notation and assigning it a value. Later I declare a var with the same name as the one I just created above. Note I am not assigning a value. Since this is a redeclaration of the same variable the old value should not be overriden as described here: http://www.w3schools.com/js/js_variables.asp //create global variable with square bracket notation window['y'] = 'old'; //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows New instead of Old The problem is that the old value actually does get overriden and in the above eg. the alert shows 'new' instead of 'old'. Why ? I guess another way to state my question is how is the above code different in terms of semantics from the code below: //create global variable var y = 'old'; //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows Old

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  • Software way to cool down an old MacBook Pro

    - by notMacBookProSuperUser
    Hi all, First a little background: I've got lots of computers, including Linux PCs and two MacBook Pro (and a MacMini). My concern is with my 'old' MacBookPro (Core Duo). It really does overheat. Warranty is long void. Years ago (I'd say 2.5 years ago or so) one day it overheated so bad that the battery inflated due to the heat. I got a new battery for free but it's still getting incredibly hot (much other than any other computer I've got: my newer Core 2 Duo MacBook Pro doesn't get nearly as hot as the old one. It s really a pain because I use my old MBP when I m in front of TV, having it on my lap, and it can really become unbearable. I don't want to open that old MBP. On Linux I can force a new CPU 'governor' that decides how the CPU is allowed to operate: it can be 'on demand', 'always max speed', 'always speed x', etc. Does the same exist under MacOS X? Is there a way, say if a 1.86 Ghz Core Duo can run at 1.6 Ghz, to ask MacOS X: "never run this CPU above 1.6 Ghz" ?

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  • Can't Delete Old Windows Directory

    - by David Mullin
    I got a new SSD drive for my computer, and have installed Windows on this drive. This left an old Windows directory on my old normal drive. I am now attempting to delete this old Windows directory, but am getting blocked by security. If I crawl down into each subdirectory, I can manually change the ownership and access rights for each file, but if I attempt to do it from the root directory, I get a "Failed to enumerate objects in the container. Access is denied" error. I have tried logging in as local Administrator, but this had the same effect. I figure that I am missing something stupid, but I just can't determine what it is.

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  • old ssl certficate didn't go away on apache2

    - by user1212143
    I have replaced the old ssl certficate with new one and restart apache several time but the old certificate still show on web browser and when I run a command openssl s_client -connect 127.0.0.1:443 -showcerts also I have delete all old certficate files. so not sure where apache still read these certficate. and not read the new one. here is my ssl.conf Listen 0.0.0.0:443 SSLEngine on SSLOptions +StrictRequire <Directory /> SSLRequireSSL </Directory> SSLProtocol -all +TLSv1 +SSLv3 SSLCipherSuite HIGH:MEDIUM:!aNULL:+SHA1:+MD5:+HIGH:+MEDIUM SSLMutex file:/usr/apache2/logs/ssl_mutex SSLRandomSeed startup file:/dev/urandom 1024 SSLRandomSeed connect file:/dev/urandom 1024 SSLSessionCache shm:/usr/apache2/logs/ssl_cache_shm SSLSessionCacheTimeout 600 SSLPassPhraseDialog builtin SSLCertificateFile /usr/apache2/conf/ssl.crt/server.crt SSLCertificateKeyFile /usr/apache2/conf/ssl.key/server.key SSLVerifyClient none SSLProxyEngine off <IfModule mime.c> AddType application/x-x509-ca-cert .crt AddType application/x-pkcs7-crl .crl </IfModule>

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  • Decrypting Windows XP encrypted files from an old disk

    - by Uri Cohen
    I had an old Windows XP machine with an encrypted directory. When moving to a new Win7 machine I connected the old disk as a slave in the new machine, and hence cannot access the encrypted files. Chances don't seem good as documentation warns you: "Do not Delete or Rename a User's account from which will want to Recover the Encrypted Files. You will not be able to de-crypt the files using the steps outlined above." On the other hand, I have full access to the machine, so maybe there's a utility which can extract the keys and use the to decrypt the files... BTW, I didn't have a password in the old machine, if it's relevant. Ideas, anyone? Thanks!

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  • Changed array composition, mdadm --detail still shows the old array size

    - by Prody
    I have a machine with 8 disks. I installed it with my hoster's install automation (it's OVH, I don't have physical access to it). The machine installed correctly, but it made an array that I wanted to change. It created a raid5 array across 5/8 disks and I've changed it to raid10 across 8 disks. I've done this by first --stopping the old array and then --creating the new array. It warned me that a previous array was there, but I chose to continue. So it created the array, spent 10ish hours syncing it and now that it's ready I get this strange behavior: When I fdisk p on it, I see the correct size. But when I mdadm --detail it I see the old array's size even tho I get the new composition and level. When I try to pvcreate on it, i get the old size again for some reason. Did I have to do something else? Did I miss something?

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  • Problems restoring old backups in NetBackup 6.5

    - by gharper
    I had a server that was decommissioned & replaced last year, and since the server was no longer in use, I deleted it's client & backup policy from the NetBackup Admin Console shortly afterwards. I recently got a request to restore a file from the old server, however when I specify the source client for the restore, I get an error message saying: WARNING: server (backupserver) does not contain any backups for client (oldserver) using the specified policy type (Standard) as requested by client (backupserver). [Ok] In addition to that error, I can't seem to run a Client Backup report on the old client any more to determine what tapes I need to recall in order to re-index and restore the files... My questions: Does deleting the client somehow remove NetBackups ability to ever restore files from the old system, even if the backups have a retention period of infinity? Is there a way to restore the file from the tape, assuming I can figure out which tape I need?

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  • Is it OK to reoccupy my old GitHub username to protect repository redirections?

    - by Idan Arye
    I'm considering changing my GitHub username from the old alias I was using as a kid to my real name. I'm concerned about my repository URLs. GitHub will redirect the old URLs, but if someone creates a new account using my old username and creates a repository with the same name as one of my repositories, the URL redirection will break and the URL will lead to their repository, not mine. Now, this is understandable, and GitHub recommends to not count on the redirect in the long term, and update all the remotes, but I'm concerned about some Vim plugins I'm hosting on GitHub. It's a common practice to manage Vim plugins with Git(either as separate repositories or as submodules), and if one of the plugins' remotes break you'll get error messages when you try to batch-update all your plugins(it happened to me once...). It's not that hard to solve, and the chances that'll happen are slim, but I would still like to avoid causing trouble to the users of my plugins... To prevent this, I think to create a new account with my old username. That way I can avoid the risk of someone else taking my old username and breaking the redirects of my old repositories. While researching this approach I've found GitHub's Name Squatting Policy. According to that policy, GitHub can delete or rename inactive accounts. To my understanding, they do this to prevent Cybersquatting, but surely this isn't the case with my fake account - I'm not holding someone else's name in an attempt to sell it to them, I'm merely occupying a name I was using to protect my old URLs... So, is it acceptable to go with this plan an create a fake account with my old username?

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  • MUD source code

    - by Tchalvak
    I haven't been able to find a lot of the old, open source mud source codes. I find the way they did things very applicable to text-based/browser based games, and I'd love to be able to skim through parts of 'em for inspiration. For instance, we have this huge list of muds and the relationships between them, but little by way of access to source code. http://en.wikipedia.org/wiki/MUD_trees Often (I'm looking at you, dikumud, http://www.dikumud.com/links.aspx ) the sites of the mud itself doesn't even have a working link to the source. https://github.com/alexmchale/merc-mud has a copy of merc that I found, which certainly contains other works within it's history, but the pickings seems sparse. Does anyone have better resources for gaining access to MUD source code than these?

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  • Circular motion on low powered hardware

    - by Akroy
    I was thinking about platforms and enemies moving in circles in old 2D games, and I was wondering how that was done. I understand parametric equations, and it's trivial to use sin and cos to do it, but could an NES or SNES make real time trig calls? I admit heavy ignorance, but I thought those were expensive operations. Is there some clever way to calculate that motion more cheaply? I've been working on deriving an algorithm from trig sum identities that would only use precalculated trig, but that seems convoluted.

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  • Can my computer run Ubuntu? [duplicate]

    - by Harry B
    This question already has an answer here: How do I find out which version and derivative of Ubuntu is right for my hardware in terms of minimal system requirements? 2 answers Just want to check if my computer can run Ubuntu. It is an old IBM ThinkPad, so here are the basic stats I could find: IBM 28832ZU Processor Intel(R) Celeron(R) M processor 1300MHz Processor Speed 1.27 GHz Memory (RAM) 2048 MB Operating System Microsoft Windows XP Professional Operating System Version 5.1.2600 Intel Extreme Graphics 2M And here is some info pulled from the graphics panel NTEL(R) EXTREME GRAPHICS 2 FOR MOBILE REPORT Report Date: 06/28/2013 Report Time[hr:mm:ss]: 17:53:20 Driver Version: 6.14.10.3943 Operating System: Windows NT* 5.1.2600 Service Pack 2 Default Language: English DirectX* Version: 9.0 Physical Memory: 2038 MB Min. Graphics Memory: 8 MB Max. Graphics Memory: 64 MB Graphics Memory in use: 7 MB Processor: x86 family 6 Model 9 Stepping 5 Processor Speed: 1296 MHZ Device Revision: 2 Output Devices Connected to Graphics Accelerator * Active Notebook Displays:1

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  • DIY a simple .inf on an existing .sys?

    - by Stijn Sanders
    In continuation of attempting to get an old Digi ST-1032 working on a new server, we've downgraded a server to Windows 2000 in an attempt to use the NT4 drivers. And it works, the old software setup works, finds the device on the SCSI bus, and connects the 32 ports to COM3..COM34 or any other set using the port remapper tool. The minor issue that remains is that Plug-and-Play still detects this device over SCSI and tries to wizard you into selecting a driver for it. Which doesn't exists (Digi Intl support confirms this device is so old, a 2000 or XP driver was never made). The exact name displayed is "DigiIntl ST-1032 SCSI Net Device" (Oddly enough, two devices get detected with this name, on two neighbouring LUN's, could one be the built-in terminator?) Is there a way to concoct a simple .inf that would (re-)register the existing sts.sys that appears to get registered by the (old) installer of the driver software?

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  • Old Hardware Specifications

    - by billswift
    Anyone know where I can get specs for old monitors and soho computers? I'm setting up some old computers as linux boxes and especially need monitor specs for setting X Window System parameters. Right now I need specs for a Packard Bell 1024S monitor.

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