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• Is it possible to install and use a printer in Azure Worker Roles?

  - by lurkerbelow

  I'd like to know if it's possible to create and use a printer in Azure Worker Roles. I do know that I can install printers with basic batch commands. So I could define a batch script that would run as a startup task. something like: rundll32 printui.dll,PrintUIEntry /if /b "printer" /f %windir%\inf\ntprint.inf /r "file:" /m "printername") Question: Can I use a printer to print to file, maybe to local storage? I do need the function to print to file or atleast to have a printer installed, because I have to get the PCL output from different installed printers. Sadly I can not test it by myself. I do not have a CC to join the 90 days trial.

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• Ignore subdomain rewrite rules

  - by user55745

  I'm having difficulty having a sub folder act differently to the main domain in my web.config for iss. I want to prevent the sub folder from rewriting to the baselevel index.php and instead re-write to /subfolder/index.php/ I've tried this <rule name="Remove index.php for quiz" enabled="true" stopProcessing="false"> <match url="^(gsoquiz/)(.*)$" ignoreCase="false" trackAllCaptures="false" /> <conditions logicalGrouping="MatchAll"> <add input="{R:1}" negate="true" pattern="^(index\.php|admin\.php)" /> </conditions> <action type="Rewrite" url="/gsoquiz/index.php/{R:1}" /> </rule> But all I get is The page cannot be displayed because an internal server error has occurred. Any help as to where I'm going wrong would be greatly appreciated. Going mad trying to figure this out :).

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• Samba users not added untill they logon first? Edit: How do I add users to tdbsam without a password prompt?

  - by glisignoli

  I add users to my server with the command useradd -m -p PASS_HASH -s /usr/sbin/nologin USERNAME Then I try to access their samba home share, but it never shows up until I login with the user: root:~$sudo login failtest Password:###### Added user failtest. Is there some way of added the user without logging in? Edit: The problem is that the user is added with the useradd command, but ubuntu seems to run an initalisation script when the user logs on for the first time. This script then adds that user to the tdbsam user database. Finding the initalisation script or the method it uses to add a user to the tdbsam database without requiring any user input (as smbpasswd -a USER prompts the user for a password). So all I need is a way to add a user+pass to the tdbsam database without prompting a user for a password (eg: samaba-add-user.sh USERNAME PASSWORD).

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• Microsoft Lifecam VX-2000 doesn't work anymore in Cheese

  - by paed808

  I got have two Lifecam VX-2000's and they don't work in cheese anymore. I don't know if it's a problem with a missing package, or a package I installed. Here is the output. (cheese:11122): Clutter-WARNING **: No listener with the specified listener id 29 (cheese:11122): Clutter-WARNING **: No listener with the specified listener id 30 (cheese:11122): Clutter-WARNING **: No listener with the specified listener id 31 (cheese:11122): Clutter-WARNING **: No listener with the specified listener id 32 (cheese:11122): GLib-CRITICAL **: g_hash_table_remove_internal: assertion `hash_table != NULL' failed (cheese:11122): Clutter-WARNING **: Not able to remove listener with id 1 (cheese:11122): GLib-CRITICAL **: g_hash_table_size: assertion `hash_table != NULL' failed totem-video-thumbnailer: 'file:///home/myusername/Videos/Webcam/2012-09-20- 191530.webm' isn't thumbnailable Reason: Media contains no supported video streams. ** (cheese:11122): WARNING **: could not generate thumbnail for /home/myusername/Videos/Webcam/2012-09-20-191530.webm (video/webm) Notice the: Reason: Media contains no supported video streams. When I try to record a video it just makes a 13.2KB WEBM file with nothing. When I take a picture it works. Edit: I've been thinking that the problem started after installing the MediUbuntu repository on my system.

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• PHP-FPM runs PHP scripts as root

  - by fwalch

  I have a web server setup using nginx and PHP-FPM listening on a Unix socket. In my php-fpm.conf, I have specified user = www group = www When I run ps aux, I can see that the php-fpm worker processes run as www; the php-fpm master process runs as root. However, I noticed that PHP scripts are executed as root; at least that's the output of echo get_current_user(); What can I do to run scripts as the www user? How can this even happen if the worker processes run as www?

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• How do I understand the partition table? (I want to start over.)

  - by Sammy Black

  I have Ubuntu 10.04 Lucid installed through wubi on my laptop (it came with Windows 7 preinstalled). This was my first foray into Linux, and I'm here to stay. I have no use for Windows, and yet I must manually choose not to boot into it! Should I shrink the Windows partition to something negligible and grow the Linux one using something like gparted or fdisk, and just be content that everything runs? In that case, I need to understand the filesystems. Which is which? Here's the output of $ df -h: Filesystem Size Used Avail Use% Mounted on /dev/loop0 17G 11G 4.5G 71% / none 1.8G 300K 1.8G 1% /dev none 1.8G 376K 1.8G 1% /dev/shm none 1.8G 316K 1.8G 1% /var/run none 1.8G 0 1.8G 0% /var/lock none 1.8G 0 1.8G 0% /lib/init/rw /dev/sda3 290G 50G 240G 18% /host I would prefer to start over with a clean install of 10.10 Maverick, but I fear what I may lose. Certainly, I will backup my home directory tree (gzip?), but what about various pieces of software that I've acquired from the repositories? Can I keep a record of them? By the way, I asked a similar question over on Ubuntu forums.

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• How do I fix "Ubuntu is running in low-graphics mode?"

  - by Tortoise

  First off, I'm running Ubuntu 10.04 on a 30gb partition, the rest of my hdd is for a vista partition. The way I installed this was, I shrunk the vista partition and installed Ubuntu in the largest block of free space. Ubuntu has been working fine for a few weeks, and I've loved it, but today I was doing something in Vista (something simple) and I restarted to go back into ubuntu, and when it tried to boot up I got a message that said: "Ubuntu is running in low-graphics mode. Your screen, graphics card, and input devices could not be detected correctly. You will have to configure these yourself." I click OK, and it gives me a few options but all of them are dead ends. Basically, I'm stuck in CLI right now without a clue of how to fix it. I've tried doing a full update and it hasn't made a difference. I've already been asking for help in #Ubuntu and #Radeon and I was directed by some of them here, so I hope I can find some answers here. Also, I'm using an ATI Radeon X1200. Any help would be greatly appreciated. Another thing, while I was trying to get help in #radeon I was told that it could possibly be this bug.

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• Ubuntu 10.04 problems - GVIM and Sound

  - by Skun

  Hey Guys ! Well, i have 2 problems .. not exactly problems, but one is a question, and the other is a problem . QUESTION I have installed gVim on my laptop and now i want to install plugins and customize my vimrc . Where is the 'plugin' , 'color' , 'docs' directory located in order for me to drop those files in ? And where do i need to put the .vimrc file for gVim to be able to recogonize it ? PROBLEM Sound isn't working. I dont know whats the problem @ all. It just doesnt play . And NO its not on mute. i Checked. If any other input is required from the terminal , please ask for it. I'm kinda a n00b in all this. Please help. Thanks in advance

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• ifconfig can't see USB wireless

  - by Alex

  I have a wifi USB dongle which I have previously used on a Raspberry Pi (this it is what it is target at). I am trying to get it working on an Nvidia Jetson TK1, however I am having some problems. When I run ifconfig I can't see the wifi, only the ethernet and local loopback. iwconfig reports no wireless extensions on all devices. lsusb does find the device: Bus 002 Device 008: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter So I am not sure why the network tools can't see it. I have tried logging on with a GUI and opening up the network settings through Unity, but cannot see any wireless devices either. Not sure if this is useful, but output of lsmod: Module Size Used by nvhost_vi 2940 0 How can I enable wireless networking on this computer? Command line approach is preferred, but either is fine. UPDATE I don't have the kernel module rt2800usb anywhere on my system. If I do an apt-file search for rt2800usb it lists a number of packages of the pattern: linux-image-3.13.0-*. Perhaps installing one of these will do the trick, but can anyone tell me if its safe to do so?

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• Linux: Limiting data throughput (pipe) in bytes per second?

  - by sdaau

  Hi all, I was wandering if there is a Linux program that can limit data throughput of a pipe - in actual bytes per second?. From what I gather, applicable for the purposes would be bfr, however, it has been removed from Debian (Removal candidate: bfr) cpipe, however, it seems the lowest resolution it will support is kB/s, meaning that buffer writes can still reach MB/s ([SOLVED] Is there a program to limit terminal pipe speed? - Page 2 - Ubuntu Forums) What I'd want is to be able to specify something like cat example.txt | ratelimit -Bps 100 > /dev/ttyUSB0 ... and actually have a single byte from example.txt sent each 1/100 = 0.01 sec (or 10 ms) to 'output'.. Thanks in advance for any suggestions, Cheers!

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• puppet agent doesn't retrieve files from master

  - by nicmon

  I have a very basic question regarding to Puppet 3.0.1 configuration. I setup a puppet master server (CentOS) with 2 agents (CentOS and Windows 7), all 3 can ping and access each other. There is no error at all. I have copied a file under /etc/puppet/files/test2.txt my site.pp (/etc/puppet/manifests) contains these lines: node default { include test file { "/tmp/testmaster.txt": owner => root, group => root, mode => 644, source => "puppet:///files/test2.txt" } } but there will no file be created on agent servers under /tmp/ once I run "puppet agent --test" here is the output: [root@agent1 ~]# puppet agent --test Info: Retrieving plugin Info: Caching catalog for agent1.mydomain.com Info: Applying configuration version '1354267916' Finished catalog run in 0.02 seconds "puppet apply /etc/puppet/manifests/site.pp" creates the testmaster.txt under /tmp/ on master.

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• Mini DV and DVI Conversion

  - by Kairan

  Video card is: AMD HD 6950 My video card comes with 1xHDMI, 2xDVI, and 2xMini DV ports. I have always used VGA and DVI only. I have the HDMI already connected. I want to hook up 2 more display. One of the display can take a VGA only, the other is an LCD TV so it has VGA, HDMI, Component. I am wondering: 1) What is the best output port to use for the second two monitors? The miniDV or the DVI? 2) I need to run a long cable maybe 15-25 feet, this might change the answer to question 1, is an HDMI long cable 20+ ft going to be better than a 20ft DVI or miniDV ?

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• Why am I getting 'undefined method' exceptions when executing 'run_list add', 'run_list remove' and 'rackspace server delete'?

  - by Peter Groves

  [Originally posted this to opscode forum, got no response] I’m testing out a free hosted chef-server account and multiple subcommands are failing with ‘Unexpected Errors’. Perhaps my version and the server version are incompatible? OS: Ubuntu 12.04LTS Local Chef: 10.12.0 (Installed through gem) Local Ruby: 1.8.7 Also, the workstation machine has been manually configured, but the client(s) I’ve been experimenting with are launched with the Rackspace plugin (using ‘knife rackspace server create…’) The problem commands seem to fail when talking to the host chef-server, however, before it ever tries to modify the client, so I don’t believe that’s where the problem exists. The virtual-servers that are launched by ‘knife rackspace server create’ are launched properly but then deleting them with knife fails. If I include a recipe in the run_list when I create the server, the recipe is properly added to the run_list. If I try to add it later or remove the one that there server was initialized with, those commands fail. Here is the output of a few relevant commands (with stacktraces): https://gist.github.com/7100ada3fd6690113697

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• Diff and ignore lines missing in one file

  - by Millianz

  I want to diff two files and ignore lines that are present in one file but missing in the other. For example File1: foo bar baz bat File2: foo ball bat I'm currently running the following diff command diff File1 File2 --changed-group-format='%>' --unchanged-group-format='' Which in this case would produce bar baz as the output, i.e. only missing or conflicting lines. I would like to only print conflicting lines, i.e. ignore cases where one line is missing from File2 and is present in File1 (not the other way around). Is there any way to do something like this using diff or do I have to resort to other tools? If so, what would you recommend?

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• VLC - Play two mp3s simultaneously from command line

  - by raoulcousins

  I'm using VLC 2.0.8 on Windows 7. How do I play two mp3s simultaneously from the command line (command line because to write a batch script that launches the mp3s)? I've tried vlc 1.mp3 2.mp3 and vlc 1.mp3 --input-slave 2.mp3 (I've seen the second one as a way to play a video file and a separate audio file simultaneously). Both of these just launch 1.mp3. Not important, but if you're wondering, the mp3s are respectively cafe sounds and rain sounds, so I can play sounds similar to those found at http://rainycafe.com/ without having to launch a browser.

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• SQL to XML open data made simple

  - by drrwebber

  The perennial question for people is how to easily generate XML from SQL table content?  The latest CAM Editor release really tackles this head on by providing a powerful and simple toolset.  Firstly you can visually browse your SQL tables and then drag and drop from columns and tables into the XML structure editor.   This gives you a code-free method of describing the transformation you require.  So you do not need to know about the vagaries of XML and XSD schema syntax. Second you can map directly into existing industry domain XML exchange structures in the XML visual editor, again no need to wrestle with XSD schema, you have WYSIWYG visual control over what your output will look like. If you do not have a target XML structure and need to build one from scratch, then the CAM Editor makes this simple.  Switch the SQL viewer into designer mode, then take your existing SQL table and drag and drop it into the XML structure editor.  Automatically the XML wizard tool will take your SQL column names and definitions and create equivalent XML for you and insert the mappings. Simply save the structure template, and run the Open Data generator menu option, and your XML is built for you. Completely code-free template driven development. To see this in action, see our video demonstration links and then download the tools and samples and try it yourself.

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• Adding chinese keyboard

  - by user63434

  I am trying to find an .adm or GPO settings so when any users login to the 2003/2008 server using Windows 7/windows xp pro client it will add the keyboard Chinese PRC (one of the inputs that is listed) in the language bar. Any ideas or if this is possible much apprieciated. Thanks Thanks, it's a client login from a network to the server. Your adm is for setting up a UK keyboard, I think I have a usa keyboard adm, I have downloaded google pinyin and I need to set it up for PRC (google pinyin) input option under language also any ideas how to write an adm for this as I am not sure how to get the codes etc you have. Thanks

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• Reverse Engineer Formula

  - by aaronls

  Are there any free programs or web services for reverse engineering a formula given a set of inputs and outputs? Consider if had 3 columns of data. The first two numbers are inputs, and the last one is an output: 3,4,7 1,4,5 4,2,6 The outputs could be produced with simply a+b, but there could be many formulas that would give the same result of course. I am talking about data without any error or deviation, and I think the formula would only need basic operations(divide, multiply, add, sutbract) and possibly use one of floor/ceiling/round.

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• How to list down hosts with nmap 5.51

  - by Wild Bill

  I was using nmap 5.21 with the -PN, -F and --reason flags in version 5.21. I was outputting the results to an XML file. It would list ALL hosts (say I gave it a /24 subnet to scan. I then updated to 5.51 and ran the exact same command, but it no longer lists down hosts, just ones that are up. Is there a new flag to list down hosts? OR did this get removed in 5.51? My full options are: -sS -n -PN -SV -F --reason I've also used and removed --open but it will not list down hosts in my XML output.

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• Map Ctrl and Alt to mouse thumb buttons

  - by murphyslaw

  I'm running Ubuntu 12.04 and have a multi-button Microsoft mouse. I would like to map the CTRL and ALT modifier keys to the left and right thumb buttons of my mouse, respectively, so I can ctrl-click and alt-click without touching the keyboard. My thumb buttons are buttons 8 and 9. I tried the solution in this question: How do I configure a mouse thumb button? which explained how to map a double click to a thumb button - this worked for the double-click but I couldn't figure out how to modify the solution for CTRL and ALT I also tried this: How to map Ctrl/Shift to thumb buttons of Mouse? which used xdotools and xbindkeys. I modified the script to this: ~/.xbindkeysrc: "xdotool keydown alt" b:9 "xdotool keyup alt" release + alt + b:9 "xdotool keydown ctrl" b:8 "xdotool keyup ctrl" release + control + b:8 Which ALMOST works. It simulates a CTRL-key press when I click the left thumb button, but I can't actually hold the button and click at the same time - holding the thumb button seems to prevent it from listening to other input until it is released. Does anyone know how I can make my mouse thumb button actually work as a modifier key, so I can use thumb_button+click instead of CTRL-click?

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• SteamCMD can't add files to my home directory

  - by Angle O'Saxon

  I'm trying to clean up the administration of some game servers I run on a Ubuntu box, part of which has been finally setting permissions properly so I can run the Steam console tool that controls updates and such. I had been running it as root using sudo, but I changed the permissions so that I can start it as a regular user rather than root. That bit seems to work fine, but now when SteamCMD actually starts, it errors with the following output ./steam.sh: line 24: /home/angleosaxon/.steampid: Permission denied Installing breakpad exception handler for appid(steam)/version(1334262703) SteamUpdater: Error: Couldn't create directory /home/angleosaxon/Steam/package, got error 13 [ 0%] Download complete. [----] Verifying installation... unlinked 0 orphaned pipes [----] !!! Fatal Error: Steam failed to load: *SteamStartEngine(0xbfa7cfa0) failed with error 1: Failed to open logfile /home/angleosaxon/Steam/steam.log Leaving aside the question of why it wants to add this information to my home directory, why is it getting access denied errors? As I understand it, since it's being run by my account, it operates with my permissions, so it should be able to read/write from my home directory, shouldn't it? This is the command I'm using to run it: /opt/steamcmd/steam.sh "+login UserAccount \"This is not my actual password.\"" +force_install_dir $ServerDir "+app_update 215360 validate" +quit

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• Getting Excel to handle CRLF's correctly in CSV

  - by Ben Fulton

  I am creating CSV files to be opened in Excel. The rows are separated by CRLF and that's fine, but some of the input data contains CRLF data in it as well. Per the usual standards, I surround them with quotes, but Excel doesn't seem to recognize the CR character and puts a little box with a question mark in it instead. I can strip the CR's out of the CSV file, but it seems like an unnecessary step. Is there an easy way to get Excel to recognize a CRLF inside a row of a CSV file?

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• Windows 7 XPS Document Writer has stopped working

  - by jamie

  I have successfully used the Windows 7 XPS Document writer for quite a while under windows 7 (64 bit). Now however when i try to print i get prompted twice for the output file name and then get different error messages depending upon the application being used. e.g. Notepad gives a 'The I/O operation has been aborted because of either a thread exit or an application request'. I have disabled and reenabled the XPS facilities of windows features and have similiarly removed and readded the printer. But the end result is the same. I've uninstalled all applications i have installed since the time when i know it worked but this also has not made any difference. Suggestions please!

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• Collision detection between a sprite and rectangle in canvas

  - by Andy

  I'm building a Javascript + canvas game which is essentially a platformer. I have the player all set up and he's running, jumping and falling, but I'm having trouble with the collision detection between the player and blocks (the blocks will essentially be the platforms that the player moves on). The blocks are stored in an array like this: var blockList = [[50, 400, 100, 100]]; And drawn to the canvas using this: this.draw = function() { c.fillRect(blockList[0][0], blockList[0][1], 100, 100); } I'm checking for collisions using something along these lines in the player object: this.update = function() { // Check for collitions with blocks for(var i = 0; i < blockList.length; i++) { if((player.xpos + 34) > blockList[i][0] && player.ypos > blockList[i][1]) { player.xpos = blockList[i][0] - 28; return false; } } // Other code to move the player based on keyboard input etc } The idea is if the player will collide with a block in the next game update (the game uses a main loop running at 60Htz), the function will return false and exit, thus meaning the player won't move. Unfortunately, that only works when the player hits the left side of the block, and I can't work out how to make it so the player stops if it hits any side of the block. I have the properties player.xpos and player.ypos to help here.

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• Understanding connection tracking in iptables

  - by Matt

  I'm after some clarification of the state/connection tracking in iptables. What is the difference between these rules? iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT Is connection tracking turned on when a packet is first matched containing -m state --state BLA , or is connection tracking always on? Can/Should connection state be used for fast matching like below? e.g. suppose this is some sort of router/firewall (no nat). # Default DROP policy iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP # Drop invalid iptables -A FORWARD -m state --state INVALID -j DROP # Accept established,related connections iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT # Allow ssh through, track connection iptables -A FORWARD -p tcp --syn --dport 22 -m state --state NEW -j ACCEPT

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