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  • How to create a new user group and add user to it in Ubuntu 12.04

    - by Omal Lasitha
    My OS is Ubuntu 12.04.1 Desktop version (32bit). I want to create a new group called restricted which allows its users to use Audio devices and Video devices only, and I want to add a user called visitors to that group. By using Users and Groups, I was able to create a new user account called visitors, and a new group called restricted. But I can't figure out how to add those settings to the group restricted, and add the visitors user account to that group. I tried Google-ing, but every search result was about accessing root privileges and all, and I couldn't find answers on this specific topic.

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  • I bought a domain name at GoDaddy and hosting at Dreamhost but the first doesn't work!

    - by janooChen
    I added the Dreamhost's nameservers like 12 hours ago to: I entered to the following panel: Nameservers -> Set Nameservers (I have specific nameservers for my domains) and added Dreamhost's nameservers liek this: Nameserver 1: NS1.DREAMHOST.COM Nameserver 2: NS2.DREAMHOST.COM Nameserver 3: NS3.DREAMHOST.COM So now in the admin panel I see this: Nameservers Nameservers: (Last Update 2/10/2011) NS1.DREAMHOST.COM NS2.DREAMHOST.COM NS3.DREAMHOST.COM But I get this when I run the analysis tools: Attention Required! There are critical issues Accessing Your Web Site Accessing Your Web Site Properly configuring your domain name and hosting account ensures that visitors can access your site. Did I do something wrong or I have to wait 24 to 48 hours? (Dreamhost does display my page because I can access the other domain name I bought together with the hosting) (By the way, if everyone uses the same nameserver, how will go GoDaddy know which is the hosting space that I purchased among all others)? Thanks in advance.

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  • C++ program...overshoots? [migrated]

    - by Zdrok
    I'm decent at C++, but I may have missed some nuance that applies here. Or maybe I completely missed a giant concept, I have no idea. My program was instantly crashing ("blah.exe is not responding") about 1/5 times it was run (other times it ran completely fine) and I tracked the problem down to a constructor for a world class that was called once in the beginning of the main function. Here is the code (in the constructor) that causes the problem: int ii; for(ii=0;ii<=255;ii++) { cout<<"ent "<<ii<<endl; entity_list[ii]=NULL; } for(ii=0;ii<=255;ii++) { cout<<"sec "<<ii<<endl; sector_list[ii]=NULL; } entity_list[0] = new Entity(0,0); entity_list[0]->_world = this; Specifically the second for loop. The cout references are new for the sake of telling where it is having trouble. It would print the entire "ent 1" to "ent 255" and then "sec 1" to "sec 255" and then crash right after, as if it was going for a 257th run through of the second for loop. I set the second for loop to go until "ii<=254" which stopped all crashes. Does C++ code tend to "overshoot" for loops or something? What is causing it to crash at this specific loop seemingly at random? By the way, entity_list and sector_list point to classes called Entity and Sector, respectively, but they are not constructing anything so I didn't think it would be relevant. I also have a forward declaration for the Entity class in a header for this, but since none were being constructed I didn't think it was relevant either. EDIT: It was due to the new Entity line, I assumed wrongly that the fact that altering the for statement to 254 fixed the crashes meant that it had to be there. I still don't understand why the for loop is related, though.

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  • load syntax as per file prefix

    - by Richo
    Firstly, I hope that this is the right place. I couldn't decide between here and superuser. My home directory lives in an svn repo. all my dotfiles are in version control so that I can track them across multiple machines, and they all source an unversioned .local (ie, .screenrc.local, .vimrc.local etc) which can override/make local changes to the environment in a machine specific way. The problem is that vim understands how I want to edit many of these config files, but loses it's mind when I open a .local, and honestly, I'm not really sure what it does to work out how to syntax highlight etc a file like .screenrc the pseudocode for what I'm after is: if OpenedFile.ends_with(".local") behave_as_per OpenedFile[0:-6] endif I hope this makes sense and hopefully someone can shed light on whether or not this is possible.

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  • Is NVIDIA GeForce GTX 480 Video Card Compatbile with a Mac Pro Running Windows 7 Pro 64?

    - by aquat33nfan
    I have a Mac Pro (early 2008) and I'm running Windows 7 Pro (64 bit) natively (i.e., with just Windows installed and no OSX or boot camp) on it. If I buy an NVIDIA GeForce GTX 480 video card, will it work or do I have to buy a card that is Mac-specific (e.g., GeForce GTX 285 'for Mac')? Also, more generally, will Windows video cards work on Intel Macs running Windows (in case I pick a cheaper card)? I can't tell if it matters that a Mac does not have a bios. I searched other boards and I gathered that video cards would work fine because Windows has the proper drivers for them and OSX doesn't and not having the BIOS doesn't make a difference. I found one thread on here that seemed to indicate that as well, but I wanted to make sure. Thanks.

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  • How do I daemonify my daemon?

    - by jonobacon
    As part of the Ubuntu Accomplishments system I have a daemon that runs as well as a client that connects to it. The daemon is written in Python (using Twisted) and provides a dbus service and a means of processing requests from the clients. Right now the daemon is just a program I run before I run the client and it sets up the dbus service and provides an API that can be used by the clients. I want to transform this into something that can be installed and run as a system service for the user's session (e.g. starting on boot) and providing a means to start and stop it etc. The problem is, I am not sure what I need to do to properly daemonify it so it can run as this service. I wanted to ask if others can provide some guidance. Some things I need to ask: How can I treat it as a service that is run for the current user service (not a system service right now)? How do I ensure I can start, stop, and restart this session service? When packaging this, how do I ensure that it installs it as a service for the user's session and is started on login etc? In responding, if you can point me to specific examples or solutions I need to implement, that would be helpful. :-) Thanks! Jono

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  • Trying to make a game with C++, using lists to store bullets and enemies, but they are not erased

    - by XD_dued
    I've been trying to make a pretty simple space shooter game with C++, and I have been having a lot of trouble trying to use lists to store enemies and bullets. Basically I followed the post here almost exactly to store my bullets: SDL Bullet Movement I've done something similar to store my enemies. However, when I call bullets.erase(it++), for some reason the bullet is not erased. When the bullet movement is run for the next frame, it tries to re delete the bullet and segfaults the program. When I comment out the erase line, it runs fine, but the bullets are then never erased from the list... Is there any reason why the elements of the list aren't being deleted? I also set it up to print the number of elements in the list for every iteration, and it does not go down after deleting. Thanks! EDIT: Here's the specific code I'm using to store my enemies and having them act: std::list<Grunt*> doGrunts(std::list<Grunt*> grunts) { for(std::list<Grunt*>::iterator it = grunts.begin(); it != grunts.end();) { if((*it)->getHull() == 0) { delete * it; grunts.erase(it++); } else { (**it).doUnit(grunts, it); ++it; } } } Grunt is my enemy class, and the list grunts is a global variable. Is that my problem? When I pass the global into the function it becomes local? I assumed lists would be a reference type so thought this wouldn't be a problem. Sorry if this was a dumb question, I'm very new to C++, this is the first major thing I'm working on.

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  • Custom LightDM sessions to launch an application

    - by zachtib
    I'm trying to set up Ubuntu to act as a kiosk running a custom application, and am trying to get a LightDM session built to automatically start it. Ideally, I'd like to have two sessions available from LightDM. The default would start my application fullscreened, and the other would open a minimal desktop in case any configuration (mostly connecting to a wireless network) needed to be done. I've done a lot of research over the last week on custom LightDM & Gnome sessions. I've got a custom greeter written for LightDM that can start either session, but I can't figure out how to add a specific application to the Gnome session that is ultimately started without just putting a launcher in the global startup directory, and I don't want to do that since I don't want the application starting when they open "configuration mode". Another problem I've run into on my current workaround is that the application doesn't fullscreen properly, which makes me think I'm not starting enough of a gnome session (currently it's just metacity, no panel or anything else). Edit: I found a solution. See http://www.webupd8.org/2011/11/make-applications-autostart-only-in.html

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  • Error when I try to connect to a SQL Server 2005 from the internet

    - by Manish
    My SQL Server is on a local machine. I want to access it through internet. I created a website through I want to connect local SQL Server 2005. This is the error message: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) Thanks for a reply!

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  • Emacs stops taking input when a file has changed on disk [migrated]

    - by recf
    I'm using Emacs v24.3.1 on Windows 8. I had a file change on disk while I had an Emacs buffer open with that file. As soon as I attempt to make a change to the buffer, a message appears in the minibuffer. Fileblah.txt changed on disk; really edit the buffer? (y, n, r or C-h) I would expect to be able to hit r to have it reload the disk version of the file, but nothing happens. Emacs completely stops responding to input. None of the listed keys work, nor do any other keys as far as I can tell. I can't C-g out of the minibuffer. Alt-F4 doesn't work, not does Close window from the task bar. I have to kill the process from task manager. Anyone have any idea what I'm doing wrong here? In cases it's various modes not playing nice with each other, for reference, my init.el is here. Nothing complex. Here's the breakdown: better-defaults (ido-mode, remove menu-bar, uniquify buffer `forward, saveplace) recentf-mode custom frame title visual-line-mode require final newline and delete trailing whitespace on save Markdown mode with auto-mode-alist Flyspell with Aspell backend Powershell mode with auto-mode-alist Ruby auto-mode-alist Puppet mode with auto-mode-alist Feature (Gherkin) mode with auto-mode-alist The specific file was a markdown file with Github-flavored Markdown mode and Flyspell mode enabled.

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  • How to find what is written to filesystem under linux

    - by bardiir
    How can i find out what processes write to a specific disc over time? In my particular case I got a little homeserver running 24/7 and I included a script in the crontab to shutdown all drives that are not used (no change in /proc/diskstats for 15 minutes). But my system disc won't come down at all. I'm suspecting logs but it's probably not only logs writing to the filesystem on the system disk and I don't want to go all the way moving the logfiles to something else just to find out the disc still doesn't spin down and there's nothing i can do against it.

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  • Allow non-sudo group to control Upstart job

    - by Angle O'Saxon
    I'm trying to set up an Upstart job to run on system startup, and that can also be started/stopped by members of a group other than sudo. With a previous version, I usedupdate-rc.d and scripts stored in /etc/init.d/ to get this working by adding %Group ALL = NOPASSWD: /etc/init.d/scriptname to my sudoers file, but I can't seem to get an equivalent working for Upstart. I tried adding %Group ALL = NOPASSWD: /sbin/initctl start jobname to the sudoers file, but trying to run the command start jobname produces this error: start: Rejected send message, 1 matched rules; type="method_call", sender=":1.21" (uid=1000 pid=5148 comm="start jobname " interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init") As near as I can tell, that's a complaint about how my user account isn't given the power to send 'Start' messages in the D-Bus config file for Upstart. I haven't been able to actually find any information on how to edit that file to give a group permission to access a specific service--does such an option exist? Is there a way to edit the Sudoers file so I can run the job without editing the config file? Am I better off just sticking with the previous version?

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  • Is it safe to expect Sun Java 6 to supported for the life of RHEL 6?

    - by Ophidian
    I'm in the planning stages of a java application that we're targeting for Red Hat Enterprise Linux 6. Unfortunately, we're stuck at RHEL 6.1 which does not ship the java-1.7.0-oracle package set (they were added in 6.3) and I don't really have any control over when we will be upgraded to the more recent version. I don't have any specific technical requirements to use Java 7, but Java 6 is going to hit public EOL in February 2013. Am I safe to assume that since Red Hat (and subsequently Oracle with its Oracle Unbreakable Linux) has shipped a copy of Java 6 in the java-1.6.0-sun package, it will support it for the entire 10 year support life of RHEL6?

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  • PHP script unable to email on OpenBSD Apache

    - by MattC
    I have a webserver running OpenBSD 4.7 and PHP 5.2.12 out of the ports tree. There is a small contact page that is supposed to send an email to a specific address. When I fill in the form using a web browser, it sends the AJAX request to the PHP page which claims it worked successfully but there is no email. The maillog is empty as well. I created a small php script that replicates this functionality and when I run it by hand using the "php -f" command, it sends an email without a problem. I think this has to do with being chrooted but I can't seem to get it to work. Furthermore, I can't seem to get PHP to log. I told it to log to /var/www/logs/php_errors.log and restarted but can't get it to send anything to the file. Does anyone have any tips for debugging these sort of things in OpenBSD?

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  • Best blog package/platform (java, php etc)?

    - by user50912
    Hi Folks, I want to set up a blog, but I want it to reside on a URL I've bought, I also don't want any of the ads and such that sit around other blogs on blog specific sites like blogspot and generally want more control. I was thinking of getting shared hosting with mysql and such to get it going (as opposed to a VM which would be overkill). Then I just need to decide on the easiest quickest (and most secure) way of getting something up there. After some googling, I see b2evolution.net which sits on php, or Apache Roller, which seems to sit on Java. Could anyone offer any advice on whats my best approach here? Are there security concerns with either or has anyone any experience in this area? I really want setup time to be minimal, so I can concentrate of the feel of the blog rather than whats under the hood. Many Thanks.

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  • How to migrate Lotus Notes Mail in database to Exchange public folder?

    - by elsni
    I need to migrate a Lotus Notes Mail database to Exchange. In the past, Users get mails in their Notes mail accounts and sort them manually by drag and drop in a specific folder structure in a seperate Notes mail database. This should be mapped to Exchange. I considered using outlook and a sharepoint Library mapped to outlook, but Outlook does not support drag and drop from the mail account to a standard doclib and the discussion libs do not support folders. So I think it's the easiest way to use an Exchange public folder instead of a sharepoint lib, which should work as in Notes (correct me if I'm wrong). But how I do migrate the old Notes db to the public folder including all subfolders? Thank you!

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  • Squid closing the connection on long HTTP GET requests

    - by Rhys
    When running a database query on a specific external site we use, Squid seems to cut off the connection after a consistent period of time (just over a minute). The query is submitted through a standard web form is that uses GET to query their database. Firefox 3 just displays a blank page. Internet Explorer throws a 'Page Cannot Be Displayed' error (tested in v6 and v8). When we perform the same query on the same machine, but bypass the Squid proxy, it works fine. The query takes about two and a half minutes to complete. There are a few timeout settings in Squid, but I honestly don't know what one to be looking at. Any possible solutions would be much appreciated. Cheers

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  • Is it possible to have an external server within a company's firewall?

    - by Jonathan
    Hi guys, I am sure this is server admin 101, but I am unsure of the answer and would love some help. I am a software developer I have built an application for a client and am currently hosting it successfully on SliceHost. We are now coming out of Beta and the client wants to have the application within their firewall, but they do not want to deal with headache of hosting and maintaining the server. Is there a way I can recommend that we put our server at SliceHost within their Firewall? Is that an easy thing to do? Their specific requirements are: For my application to authenticate against their Active Directory, and Only allow access to the application from within their network If that is not possible, what should I recommend to my client?

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  • need for tcp fine-tuning on heavily used proxy server

    - by Vijay Gharge
    Hi all, I am using squid like Internet proxy server on RHEL 4 update 6 & 8 with quite heavy load i.e. 8k established connections during peak hour. Without depending much on application provider's expertise I want to achieve maximum o/p from linux. W.r.t. that I have certain questions as following: How to find out if there is scope for further tcp fine-tuning (without exhausting available resources) as the benchmark values given by vendor looks poor! Is there any parameter value that is available from OS / network stack that will show me the results. If at all there is scope, how shall I identify & configure OS tcp stack parameters i.e. using sysctl or any specific parameter Post tuning how shall I clearly measure performance enhancement / degradation ?

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  • Looking for an example of how a software project can be managed/deployed

    - by rguilbault
    My company is evaluating adopting off-the-shelf ALM products to aid in our development lifecycle; we currently use our own homegrown solutions to manage requirements gathering, specification documentation, testing, etc. One of the issues I am having is understanding how to move code between stages of development. We have what we call a pipeline, which consists of particular stops: [Source] - [QC] - [Production] At the first stop, the developer works out a solution to some requested change and performs individual testing. When that process is complete (and peer review has been performed), our ALM system physically moves the affected programs from the [Source] runtime environment to the [QC] runtime environment. This movement of code is triggered by advancing the status of the change request to match the stage of the pipeline. I have been searching the internet for a few days trying to find how the process is accomplished elsewhere -- I have read a bit about builds, automated testing, various ALM products, etc. but nowhere does any of this state how builds interact with initial change requests, what the triggers are, how dependencies are managed, how the various forms of testing are accommodated (e.g. unit testing, integration testing, regression testing), etc. Can anyone point me to any resources detailing specific workflows or attempt to explain (generically) how a change could/should be tracked and moved though the development lifecycle? I'd be very appreciative. Note: I've cleaned up the question to hopefully make it easier to understand. Also, I found another question (which I can't find now) that referenced this book, which sounds like it might be exactly what I am looking for -- not sure if I want to shell out the cash for it, though.

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  • How to prioritize related game entity components?

    - by Paul Manta
    I want to make a game where you have to run over a bunch of zombies with your car. When moving around, the zombies have a few things to take into consideration: When there's no player around they might just roam about randomly. And even when some other component dictates a specific direction, they should wobble to the left and right randomly (like drunk people). This implies a small, random, deviation in their movement. They should avoid static obstacles. When they see they are headed towards a wall, they should reorient themselves. They should avoid the car. They should try to predict where the car will be based on its velocity and try to move out of the way. When they can, they should try to get near the player. All these types of decisions they have to do seem like they should be implemented in different components. But how should I manage them? How can I give different components different weights that reflect the importance of each decision (in a given situation)? I would need some other component that acts as a manager, but do you have any tips on how I should implement it? Or maybe there's a better solution?...

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  • is there such a thing as a ip femtocell, and what does it do?

    - by The Journeyman geek
    My dad mentioned a co-worker suggested using a device, that might use cdma to route calls through IP to save costs on a certain overseas project we're on- since our home base is quite far from there. I've never heard of such a device, so if it does, i'm wondering, if its specific to particular ISPs, or if you can just pick one off the shelf, plug it into an arbitraty internet connection, and make calls using it and a cellphone of some sort? As you can tell, details are sketchy, so... if such a device dosen't exist, saying so might be a right answer ;)

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  • Where ORMs blur the lines between code and data, how do you decide what logic should be a stored procedure, and what should be coded?

    - by PhonicUK
    Take the following pseudocode: CreateInvoiceAndCalculate(ItemsAndQuantities, DispatchAddress, User); And say CreateInvoice does the following: Create a new entry in an Invoices table belonging to the specified User to be sent to the given DispatchAddress. Create a new entry in an InvoiceItems table for each of the items in ItemsAndQuantities, storing the Item, the Quantity, and the cost of the item as of now (by looking it up from an Items table) Calculate the total amount of the invoice (ex shipping and taxes) and store it in the new Invoice row. At a glace you wouldn't be able to tell if this was a method in my applications code, or a stored procedure in the database that is being exposed as a function by the ORM. And to some extent it doesn't really matter. Now technically none of this is business logic. You're not making any decisions - just performing a calculation and creating records. However some may argue that because you are performing a calculation that affects the business (the total amount to be invoiced) that this isn't something that should be done in a stored procedure and instead should be in code. So for this specific example - why would it be more appropriate to do one or the other? And where do you draw the line? Or does it even particular matter as long as it's sufficiently well documented?

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  • IP-restricted port forwarding with iptables

    - by Tom
    For an example, I have two authorized client computers, 1.1.1.1 and 2.1.1.1. My server running iptables is 3.1.1.1 and my firewalled web server is 4.1.1.1. When one of the authorized client IPs connects to 3.1.1.1 on port 80, I would like the connection to be forwarded to 4.1.1.1 on port 8888. If any other IP attempts to connect I would like it to refuse/drop the connection. What iptables config would accomplish this? Is there something more specific out there that would be better suited for this job?

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  • NetDiag + TCP Blocking?

    - by CrazyNick
    We are facing some issue with the sharepoint 2007 timer jobs everyday at a specific time, so decide to track the tcp blocking informartion during those hours using NetDiag tool. We are not able to find the required information if we uses "netdiag /test:ipsec", what is the command that can be used to pull the TCP blocking information and how to configure it? if i ran the command "netdiag /test:ipsec /debug" it is returning "IP Security test . . . . . . . . . : Skipped", what does it mean?

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