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  • Specify private SSH-key to use when executing shell command with or without Ruby?

    - by Christoffer
    A rather unusual situation perhaps, but I want to specify a private SSH-key to use when executing a shell (git) command from the local computer. Basically like this: git clone [email protected]:TheUser/TheProject.git -key "/home/christoffer/ssh_keys/theuser" Or even better (in Ruby): with_key("/home/christoffer/ssh_keys/theuser") do sh("git clone [email protected]:TheUser/TheProject.git") end I have seen examples of connecting to a remote server with Net::SSH that uses a specified private key, but this is a local command. Is it possible? Thanks

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  • apt-get install won't work

    - by Christoffer D. Brammer
    First of all: I am quite new to Ubuntu (and Linux and servers in all). When I am trying to install ex phpmyadmin from apt-get, I get the Error: E: Couldn't configure pre-depend upstart-job for hostname, probably a dependency cycle. Can anyone tell me why this happens, and what I can do to fix it? I am running Ubuntu Server 7.10 . /Christoffer ---EDIT--- I found the problem - and the solution! I had "ruined" (changed a little) my sources.list -and when I "reinserted" a new one, it all worked! YUHU! But thanks for your time, Rupali!

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  • Error: cluster_port_ready: could not find psql binary

    - by Christoffer D. Brammer
    When I use apt-get install i get the error: Error: cluster_port_ready: could not find psql binary What do I do here? I have tried to remove PostgreSQL 8.2 but it gives this error: The following packages have unmet dependencies: postgresql-8.2: Depends: libkrb53 (>= 1.6.dfsg.1) but it is not installable Depends: postgresql-client-8.2 but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). And then I end up at the start, with the error when trying apt-get -f install. /Christoffer

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  • Troubleshooting mailserver (Postfix, Dovecot) on Ubuntu Server 9.10?

    - by Christoffer
    Hi, I have configured a mail server with Postfix and Dovecot on Ubuntu Server 9.10. I followed the guidelines here (using Maildir): https://help.ubuntu.com/community/Postfix https://help.ubuntu.com/community/Dovecot The tests seemed alright so I connected it to GMail which is able to connect and fetch e-mails. But since there's no e-mail in the Maildir/ directory I can't decide if the problem is Postfix or Dovecot. And I am totally new to mailservers so I don't know where to start troubleshooting. So, I want to start by testing Dovecot. How can I create a fake "Hello World"-email directly on the server (using a text editor) so that I can try to fetch it with GMail? If Dovecot is alright, where do I start looking for errors in Postfix? Thank you for your time. Christoffer

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  • Troubleshooting mailserver (Postfix, Dovecot) on Ubuntu Server 9.10?

    - by Christoffer
    I have configured a mail server with Postfix and Dovecot on Ubuntu Server 9.10. I followed the guidelines here (using Maildir): https://help.ubuntu.com/community/Postfix https://help.ubuntu.com/community/Dovecot The tests seemed alright so I connected it to GMail which is able to connect and fetch e-mails. But since there's no e-mail in the Maildir/ directory I can't decide if the problem is Postfix or Dovecot. And I am totally new to mailservers so I don't know where to start troubleshooting. So, I want to start by testing Dovecot. How can I create a fake "Hello World"-email directly on the server (using a text editor) so that I can try to fetch it with GMail? If Dovecot is alright, where do I start looking for errors in Postfix? Thank you for your time. Christoffer

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  • What kind of SSL certificate do I need?

    - by Christoffer
    Hi, I want to install HTTPS on my server and I wonder what kind of certificate I will need and where I can buy it. The site is a web application that demands high security by it's users since they store sensitive business data. I am also integrating a third party payment gateway into the register process of the site and need a secure way to send credit card data one way. I do not intend to store this data in our own database. So, what do I need? And also, how do I install it on Ubuntu Server 9.10 / Apache2 ? Cheers! Christoffer

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  • Protect individual sites on Ubuntu/Apache server

    - by Christoffer
    Hi,?? I need to set up a Apache server configuration for some client sites that run under the same Ubuntu 9.10 machine. All sites are allowed to run PHP, Python and Ruby on Rails. I do not control the source code of these sites and so I need to set up a filter in order to prevent one user to reach files on another users account.?? If I run a script to list files in "/" from one account, I can browse some files and directories in the actual server root. I want to set the root for each account to /var/usersite.com/www/ instead so that listing files in "/" shows the files in the client's root. ??How is this most easily configured??? Cheers!? /Christoffer

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  • Class inheritance in PHP 5.2: Overriding static variable in extension class?

    - by Christoffer
    Hi, I need to bea be able to use a static variable set in a class that extends a base class... from the base class. Consider this: class Animal { public static $color = 'black'; public static function get_color() { return self::$color; } } class Dog { public static $color = 'brown'; } echo Animal::get_color(); // prints 'black' echo Dog::get_color(); // also prints 'black' This works wonderfully in PHP 5.3.x (Dog::get_color() prints 'brown') since it has late static binding. But my production server runs PHP 5.2.11 and so I need to adapt my script. Is there a somewhat pretty workaround to solve this issue? Cheers! Christoffer

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  • Stuck at boot, both with wubi and USB

    - by Christoffer
    I have tried installing Ubuntu 12.04 through USB and with wubi interface. Nothing works. With USB, I will enter the main menu, doesn't matter what i choose, "install ubuntu on a hard drive" or "boot into ubuntu from USB". When I click on one of those it will scan my drives or something, and when it gets to the USB it gets stuck. It just stays there.... With wubi, the install goes fine, but when trying to boot for the first time to ubuntu it says "completing ubuntu installation"... NOTHING more happens, that cursor only blinks there. How can I get Ubuntu to work??? I got: 1TB HDD, 256GB HDD, 80GB SSD. I'm trying to install Ubuntu on my 256 GB HDD....

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  • Controller changes format on variables when publishing

    - by Christoffer
    I am a newbie to ROR but catching on quickly. I have been working on this problem for a couple of hours now and it seems like a bug. I does not make any sense. I have a database with the following migration: class CreateWebsites < ActiveRecord::Migration def self.up create_table :websites do |t| t.string :name t.integer :estimated_value t.string :webhost t.string :purpose t.string :description t.string :tagline t.string :url t.integer :adsense t.integer :tradedoubler t.integer :affiliator t.integer :adsense_cpm t.boolean :released t.string :empire_type t.string :oldid t.string :old_outlink_policy t.string :old_inlink_policy t.string :old_priority t.string :old_profitability t.integer :priority_id t.integer :project_id t.integer :outlink_policy_id t.integer :inlink_policy_id t.timestamps end end def self.down drop_table :websites end end I have verified that what is created in the database also is integers, strings etc according to this migration. I have not touched the controller after generating it through scaffold, i.e. it is the standard controller with show, index etc. Now. When I enter data into the database, either through the web form, in rails console or directly in the database - such as www.domain.com for url or 500 for adsense - it will be created in the db without problem. However, when it is being published on the website the variables go completely nuts. Adsense (integer) turns into date, url (string) turns into a float, and so on. This only happens to a few of the variables. This will also create a problem with "argument out of range" since I input 500 and Rails will try to output it as date = crash and "argument out of range". So, how do I fix/trouble shoot this? Why do the formats change? Could it be because of the respond_to in the controller? Cheers, Christoffer

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  • Run GUI application via cronjob in Ubuntu?

    - by Christoffer
    Hi, I have a remote server running "Ubuntu 10.04 Desktop". From it I want to run a script that walks through a list of websites and captures screenshots of them. The script is working and thoroughly tested. When I SSH to the server with ssh -X [email protected] I can run my script by calling ./myscript.py and everything will work OK. I then modifed my crontab file and added... 59 17 * * * env DISPLAY=:0 /path/to/myscript.py ...as recommended by the Ubuntu WIKI. I can see in the /var/log/syslog that my cron job is started, but it doesn't capture any screenshots. When running env DISPLAY=:0 /path/to/myscript.py from the shell I get No protocol specified myscript.py: cannot connect to X server :0 If I ssh to the server without the -X option I only get the second row of the error: myscript.py: cannot connect to X server :0 What can I try now? More details I have run xhost +local: and checked the output of xhost to see that the option was set correctly. If I run ls /tmp/.X11-unix/ the output is X0 The server only has one screen. Thank you in advance!

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  • keyboard works in the BIOS(except a), but not at the password screen(win 7, 64bit)

    - by christoffer svendsen
    The computer is a acer aspire 7720g laptop. When windows want me to input my password, the only keys working is caps lock, the numpad and the m key(and the m key works like a combined m and enter key). I did spill some water on the keyboard yesterday but the same thing happens with usb keyboards. I disabled the quick boot in the bios, making it go through every test at bootup, which resulted in continous beeping from the computer. Anyone know how to solve this?

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  • When disabling the firewire-driver in Windows will this too disable firewire connected through a PCMCIA device?

    - by Christoffer
    The broader overarching question (not seeking an answer to this, but wanted to provide context) is how do I ensure that laptops running Microsoft Windows 7 and exposing DMA-ports (eg. firewire) are disabled once the operating system have loaded. Preventing the Firewire-driver from loading once Windows have booted works as expected, but I've been unable to confirm whether this too will disable a Firewire-port exposed through a PCMCIA-card. My question is hence whether disabling the Firewire-driver will also prevent a Firewire-port exposed through a PCMCIA from functioning?

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  • Default user profile getting filled with temp ie files

    - by Christoffer
    I have several Windows Server 2003 Terminal servers to service our domain users. Sometimes the Default User profile (C:\Documents and Settings\Default User) gets filled with tempoary internet files, so when a new user logs in, he gets a 1GB profile (instead of 20MB) that fills up the server fast. Why is it the default user profile gets filled up with files like that, by who and how do i prevent this?

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  • Inline widget-like templates in MODx

    - by Christoffer
    Hi, I'm developing my first ever MODx site and I need to have three blocks on the frontpage that contain headline, picture, image caption, long text and a short text. For these I would like to create a custom template that allows me to create sub-resources of "Home" with only these five fields (of which one will allow me to upload images). How can I set this up? Thanks!

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  • Simple multilingual CMS?

    - by Christoffer
    Hi, I have been searching for a while now for a dead simple CMS with multi-language support. The ideal candidate is very lean and offers the possibility to set up different languages for different domains. It's OK if the language support is provided by a plugin/extension. For example I want example.com to point to English and example.fr should be French. With different URI-mappings for SEO. It can be developed in either of PHP, Ruby or Python and has to be open source. Any tips? Thank you EDIT / MORE DETAILS What I want is a CMS that is as simple to use and grasp for a client as Radiant is, but with tabs on each resource that can translate articles to different languages. Languages have to be able to use multiple domains, one for each language. I want to easily use the same article for more than one language as well as have articles (e.g. blog posts or news stories) that are only connected to one language. The CMS should be very light in core functionality (like Radiant, unlike Drupal/Joomla) but be easily extendable with plugins.

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  • Visualize compiler warnings

    - by christoffer
    I'm looking for a way to visualize compiler warnings and remarks, by annotating or otherwise showing which lines cause a report. This is much like a modern IDE like NetBeans or Eclipse already does, but I'd like to take output from several compilers (and other static code analysis tools) at once, and create one single annotation in order to get a better overview. The rationale is that we've seen some problems go completely undetected by, say, Visual Studio 2005, but accurately detected with a proprietary ARM compiler, and vice versa. Cross-referencing warnings could potentially locate problems better, but doing so completely manually is infeasible. Have you heard of such a tool? Could an open-source IDE like Eclipse be extended to use several compilers at once, or has it already been done?

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  • How to place text on top of image in ReportViewer

    - by Christoffer
    I feel very silly asking this, since it seems like it just should work, but I cannot make it work and cannot find anything in the documentation about this. The problem: I'm developing an application in Visual Studio 2010 that is utilizing ReportViewer, rendering the report locally. In the report designer, I place a textbox on top of an image. This looks fine in the designer, but when rendering the report, the textbox is rendered below the image. Now, before you suggest it, I have tried placing a textbox on top of a rectangle (or other control) with the BackgroundImage property set. This works. But: I cannot find a way to rescale the background image to fit the control. Setting a different dpi for the background image does nothing. Simply rescaling the image to a different resolution is not an option, since I eventually want to print the report. Does anybody have a solution to this?

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  • jQuery catch paste input

    - by Christoffer Winterkvist
    I'm looking for a way to sanitize input that I paste into the browser, is this possible to do with jQuery? I've managed to come up with this so far: $(this).live(pasteEventName, function(e) { // this is where i would like to sanitize my input return false; } Unfortunately my development has come to a screeching hold because of this "minor" issue. I would really make me a happy camper if someone could point me to the right direction. Thanks in advance.

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  • Howcome some C++ functions with unspecified linkage build with C linkage?

    - by christoffer
    This is something that makes me fairly perplexed. I have a C++ file that implements a set of functions, and a header file that defines prototypes for them. When building with Visual Studio or MingW-gcc, I get linking errors on two of the functions, and adding an 'extern "C"' qualifier resolved the error. How is this possible? Header file, "some_header.h": // Definition of struct DEMO_GLOBAL_DATA omitted DWORD WINAPI ThreadFunction(LPVOID lpData); void WriteLogString(void *pUserData, const char *pString, unsigned long nStringLen); void CheckValid(DEMO_GLOBAL_DATA *pData); int HandleStart(DEMO_GLOBAL_DATA * pDAta, TCHAR * pLogFileName); void HandleEnd(DEMO_GLOBAL_DATA *pData); C++ file, "some_implementation.cpp" #include "some_header.h" DWORD WINAPI ThreadFunction(LPVOID lpData) { /* omitted */ } void WriteLogString(void *pUserData, const char *pString, unsigned long nStringLen) { /* omitted */ } void CheckValid(DEMO_GLOBAL_DATA *pData) { /* omitted */ } int HandleStart(DEMO_GLOBAL_DATA * pDAta, TCHAR * pLogFileName) { /* omitted */ } void HandleEnd(DEMO_GLOBAL_DATA *pData) { /* omitted */ } The implementations compile without warnings, but when linking with the UI code that calls these, I get a normal error LNK2001: unresolved external symbol "int __cdecl HandleStart(struct _DEMO_GLOBAL_DATA *, wchar_t *) error LNK2001: unresolved external symbol "void __cdecl CheckValid(struct _DEMO_MAIN_GLOBAL_DATA * What really confuses me, now, is that only these two functions (HandleStart and CheckValid) seems to be built with C linkage. Explicitly adding "extern 'C'" declarations for only these two resolved the linking error, and the application builds and runs. Adding "extern 'C'" on some other function, such as HandleEnd, introduces a new linking error, so that one is obviously compiled correctly. The implementation file is never modified in any of this, only the prototypes.

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  • Where do I find the current C or C++ standard documents?

    - by christoffer
    For many questions, especially for C-related ones, the answer seems to be found in "the standard". However, where do we find that - online? Googling can sometimes feel futile, again especially for the C standards, since they are drowned in the flood of discussions on programming forums ;) To get this started, since these are the ones I am searching for right now, where are there good online resources for: C89 C99 C++03

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  • Search function fails because it refers to the wrong controller action?

    - by Christoffer
    My Sunspot search function (sunspot_rails gem) works just fine in my index view, but when I duplicate it to my show view my search breaks... views/supplierproducts/show.html.erb <%= form_tag supplierproducts_path, :method => :get, :id => "supplierproducts_search" do %> <p> <%= text_field_tag :search, params[:search], placeholder: "Search by SKU, product name & EAN number..." %> </p> <div id="supplierproducts"><%= render 'supplierproducts' %></div> <% end %> assets/javascripts/application.js $(function () { $('#supplierproducts th a').live('click', function () { $.getScript(this.href); return false; } ); $('#supplierproducts_search input').keyup(function () { $.get($("#supplierproducts_search").attr("action"), $("#supplierproducts_search").serialize(), null, 'script'); return false; }); }); views/supplierproducts/show.js.erb $('#supplierproducts').html('<%= escape_javascript(render("supplierproducts")) %>'); views/supplierproducts/_supplierproducts.hmtl.erb <%= hidden_field_tag :direction, params[:direction] %> <%= hidden_field_tag :sort, params[:sort] %> <table class="table table-bordered"> <thead> <tr> <th><%= sortable "sku", "SKU" %></th> <th><%= sortable "name", "Product name" %></th> <th><%= sortable "stock", "Stock" %></th> <th><%= sortable "price", "Price" %></th> <th><%= sortable "ean", "EAN number" %></th> </tr> </thead> <% for supplierproduct in @supplier.supplierproducts %> <tbody> <tr> <td><%= supplierproduct.sku %></td> <td><%= supplierproduct.name %></td> <td><%= supplierproduct.stock %></td> <td><%= supplierproduct.price %></td> <td><%= supplierproduct.ean %></td> </tr> </tbody> <% end %> </table> controllers/supplierproducts_controller.rb class SupplierproductsController < ApplicationController helper_method :sort_column, :sort_direction def show @supplier = Supplier.find(params[:id]) @search = @supplier.supplierproducts.search do fulltext params[:search] end @supplierproducts = @search.results end end private def sort_column Supplierproduct.column_names.include?(params[:sort]) ? params[:sort] : "name" end def sort_direction %w[asc desc].include?(params[:direction]) ? params[:direction] : "asc" end models/supplierproduct.rb class Supplierproduct < ActiveRecord::Base attr_accessible :ean, :name, :price, :sku, :stock, :supplier_id belongs_to :supplier validates :supplier_id, presence: true searchable do text :ean, :name, :sku end end Visiting show.html.erb works just fine. Log shows: Started GET "/supplierproducts/2" for 127.0.0.1 at 2012-06-24 13:44:52 +0200 Processing by SupplierproductsController#show as HTML Parameters: {"id"=>"2"} Supplier Load (0.1ms) SELECT "suppliers".* FROM "suppliers" WHERE "suppliers"."id" = ? LIMIT 1 [["id", "2"]] SOLR Request (252.9ms) [ path=#<RSolr::Client:0x007fa5880b8e68> parameters={data: fq=type%3ASupplierproduct&start=0&rows=30&q=%2A%3A%2A, method: post, params: {:wt=>:ruby}, query: wt=ruby, headers: {"Content-Type"=>"application/x-www-form-urlencoded; charset=UTF-8"}, path: select, uri: http://localhost:8982/solr/select?wt=ruby, open_timeout: , read_timeout: } ] Supplierproduct Load (0.2ms) SELECT "supplierproducts".* FROM "supplierproducts" WHERE "supplierproducts"."id" IN (1) Supplierproduct Load (0.1ms) SELECT "supplierproducts".* FROM "supplierproducts" WHERE "supplierproducts"."supplier_id" = 2 Rendered supplierproducts/_supplierproducts.html.erb (2.2ms) Rendered supplierproducts/show.html.erb within layouts/application (3.3ms) Rendered layouts/_shim.html.erb (0.0ms) User Load (0.1ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'zMrtTbDun2MjMHRApSthCQ' LIMIT 1 Rendered layouts/_header.html.erb (2.1ms) Rendered layouts/_footer.html.erb (0.2ms) Completed 200 OK in 278ms (Views: 20.6ms | ActiveRecord: 0.6ms | Solr: 252.9ms) But it breaks when I type in a search. Log shows: Started GET "/supplierproducts?utf8=%E2%9C%93&search=a&direction=&sort=&_=1340538830635" for 127.0.0.1 at 2012-06-24 13:53:50 +0200 Processing by SupplierproductsController#index as JS Parameters: {"utf8"=>"?", "search"=>"a", "direction"=>"", "sort"=>"", "_"=>"1340538830635"} Rendered supplierproducts/_supplierproducts.html.erb (2.4ms) Rendered supplierproducts/index.js.erb (2.9ms) Completed 500 Internal Server Error in 6ms ActionView::Template::Error (undefined method `supplierproducts' for nil:NilClass): 10: <th><%= sortable "ean", "EAN number" %></th> 11: </tr> 12: </thead> 13: <% for supplierproduct in @supplier.supplierproducts %> 14: <tbody> 15: <tr> 16: <td><%= supplierproduct.sku %></td> app/views/supplierproducts/_supplierproducts.html.erb:13:in `_app_views_supplierproducts__supplierproducts_html_erb___2251600857885474606_70174444831200' app/views/supplierproducts/index.js.erb:1:in `_app_views_supplierproducts_index_js_erb___1613906916161905600_70174464073480' Rendered /Users/Computer/.rvm/gems/[email protected]/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/_trace.erb (33.3ms) Rendered /Users/Computer/.rvm/gems/[email protected]/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.9ms) Rendered /Users/Computer/.rvm/gems/[email protected]/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (39.7ms)

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  • How can I use Java to communicate to device through USB port?

    - by Bopha
    I just recently learn Java and try to communicate to the device through USB port connection. I've have used C# with OpenNETCF which allows me to send file and retrieve file on the device through USB port; how can I achieve this with java? I seearch on stackoverflow thread, http://stackoverflow.com/questions/544507/how-to-communicate-with-a-usb-device-under-windows-and-java, the comment made by christoffer is to hack the native code, but I don't quite which native code api that he referred to. RAPI, maybe?

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