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• Why is everything crashing?

  - by Kopkins

  I've been using Ubuntu for a while now and I love it, I wouldn't think of using another OS unless I can't fix this issue. The install I'm on is only around a month and a half old. I'm running 12.04 64bit on a 8,1 MBP. Up until around 2 weeks ago everything was running smoothly. Around then applications started crashing and weird things started happening. At first I thought it was just certain applications. The first thing to start giving me trouble was compiz. Occasionally compiz will stop decorating windows and lost many other functionalities. running compiz --replace fixes this, but I don't feel like doing it usually once a day. The other thing with this is that after running compiz --replace, my conky window gets lost somewhere and so I run killall conky && conky -c .conkyrc. But this isn't with just a couple applications, it seems like it is proliferating through my system. Last week fontforge started crashing while doing whatever task. So I ended up unable to finish what I was working on to completeness. Didn't find a fix. Today rhythmbox started crashing. Whenever I try to play anything, Rhythmbox becomes unresponsive and needs to be forced to close. When I try to do certain things with the disk utility, it crashes. I get the Ubuntu has experienced an internal error message much more often than I would like. Frequently applications stop appearing in the launcher. Wine almost never does anymore. After not being active for a little while, thunderbird can only fetch my mail after restarting wireless, sudo rmmod b43 && sudo modprobe b43 Occasionally some of my startup apps don't start. What is my best option here? Could they be bugs? I don't want to submit a ton of vague bug reports. Reinstall? switch OS? Thank you to anyone who responds. Kopkins

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• Glm Vector Transformations [duplicate]

  - by Reanimation

  This question already has an answer here: Car-like Physics - Basic Maths to Simulate Steering 2 answers I have a cube rendered on the screen which represents a car (or similar). Using Projection/Model matrices and Glm I am able to move it back and fourth along the axes and rotate it left or right. I'm having trouble with the vector mathematics to make the cube move forwards no matter which direction it's current orientation is. (ie. if I would like, if it's rotated right 30degrees, when it's move forwards, it travels along the 30degree angle on a new axes). I hope I've explained that correctly. This is what I've managed to do so far in terms of using glm to move the cube: glm::vec3 vel; //velocity vector void renderMovingCube(){ glUseProgram(movingCubeShader.handle()); GLuint matrixLoc4MovingCube = glGetUniformLocation(movingCubeShader.handle(), "ProjectionMatrix"); glUniformMatrix4fv(matrixLoc4MovingCube, 1, GL_FALSE, &ProjectionMatrix[0][0]); glm::mat4 viewMatrixMovingCube; viewMatrixMovingCube = glm::lookAt(camOrigin, camLookingAt, camNormalXYZ); vel.x = cos(rotX); vel.y=sin(rotX); vel*=moveCube; //move cube ModelViewMatrix = glm::translate(viewMatrixMovingCube,globalPos*vel); //bring ground and cube to bottom of screen ModelViewMatrix = glm::translate(ModelViewMatrix, glm::vec3(0,-48,0)); ModelViewMatrix = glm::rotate(ModelViewMatrix, rotX, glm::vec3(0,1,0)); //manually turn glUniformMatrix4fv(glGetUniformLocation(movingCubeShader.handle(), "ModelViewMatrix"), 1, GL_FALSE, &ModelViewMatrix[0][0]); //pass matrix to shader movingCube.render(); //draw glUseProgram(0); } keyboard input: void keyboard() { char BACKWARD = keys['S']; char FORWARD = keys['W']; char ROT_LEFT = keys['A']; char ROT_RIGHT = keys['D']; if (FORWARD) //W - move forwards { globalPos += vel; //globalPos.z -= moveCube; BACKWARD = false; } if (BACKWARD)//S - move backwards { globalPos.z += moveCube; FORWARD = false; } if (ROT_LEFT)//A - turn left { rotX +=0.01f; ROT_LEFT = false; } if (ROT_RIGHT)//D - turn right { rotX -=0.01f; ROT_RIGHT = false; } Where am I going wrong with my vectors? I would like change the direction of the cube (which it does) but then move forwards in that direction.

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• How / Where can I host my Java web application? [closed]

  - by Huliax

  Possible Duplicate: How to find web hosting that meets my requirements? In case you want to skip to the crux of my inquiry just read the bold type. I just finished my CS degree (at 39 years old :-)). For my final project I designed and built a system that can provide local positioning / location awareness to mobile wifi devices (only have Android client thus far). The server receives data from clients, processes it, and responds to the clients with a messages containing information about their respective locations. I would like to continue the project (perhaps release as open source but that is a different discussion). Thus far my server application has been running on the CS department's hardware where I could pretty much do whatever I wanted. I'm getting kicked off that system in a few weeks so I have to find a new home for my server application. I need a host that will let me run my Java server (along w/ mySQL db) -- preferably on the cheap since I haven't yet got a job. I have very little experience with the "real world" of web development / hosting. I'm having trouble figuring out what kind of hosting service will let me run my application as is. If that turns out to be a tall order then I need to know what my options are for changing thing so that I can get up and running with some hosting. As an aside, I'm also researching whether or not I should rewrite this in a different language. Trying to figure out if there is a substantially better (for whatever reason) one for what I'm doing. This might also potentially have a bearing on my hosting needs. One possibility is to write the server in something more widely accepted by hosting services. I have been searching for answers to my question and haven't found quite what I'm looking for. Part of the problem might be that I don't know exactly what terminology to use. If there is a good answer to this question elsewhere please feel free to point me towards it. Thanks for help / advice.

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• HTML5 platformer collision detection problem

  - by fnx

  I'm working on a 2D platformer game, and I'm having a lot of trouble with collision detection. I've looked trough some tutorials, questions asked here and Stackoverflow, but I guess I'm just too dumb to understand what's wrong with my code. I've wanted to make simple bounding box style collisions and ability to determine on which side of the box the collision happens, but no matter what I do, I always get some weird glitches, like the player gets stuck on the wall or the jumping is jittery. You can test the game here: Platform engine test. Arrow keys move and z = run, x = jump, c = shoot. Try to jump into the first pit and slide on the wall. Here's the collision detection code: function checkCollisions(a, b) { if ((a.x > b.x + b.width) || (a.x + a.width < b.x) || (a.y > b.y + b.height) || (a.y + a.height < b.y)) { return false; } else { handleCollisions(a, b); return true; } } function handleCollisions(a, b) { var a_top = a.y, a_bottom = a.y + a.height, a_left = a.x, a_right = a.x + a.width, b_top = b.y, b_bottom = b.y + b.height, b_left = b.x, b_right = b.x + b.width; if (a_bottom + a.vy > b_top && distanceBetween(a_bottom, b_top) + a.vy < distanceBetween(a_bottom, b_bottom)) { a.topCollision = true; a.y = b.y - a.height + 2; a.vy = 0; a.canJump = true; } else if (a_top + a.vy < b_bottom && distanceBetween(a_top, b_bottom) + a.vy < distanceBetween(a_top, b_top)) { a.bottomCollision = true; a.y = b.y + b.height; a.vy = 0; } else if (a_right + a.vx > b_left && distanceBetween(a_right, b_left) < distanceBetween(a_right, b_right)) { a.rightCollision = true; a.x = b.x - a.width - 3; //a.vx = 0; } else if (a_left + a.vx < b_right && distanceBetween(a_left, b_right) < distanceBetween(a_left, b_left)) { a.leftCollision = true; a.x = b.x + b.width + 3; //a.vx = 0; } } function distanceBetween(a, b) { return Math.abs(b-a); }

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• Help writing server script to ban IP's from a list

  - by Chev_603

  I have a VPS that I use as an openvpn and web server. For some reason, my apache log files are filled with thousands of these hack attempts: "POST /xmlrpc.php HTTP/1.0" 404 395 These attack attempts fill up 90% of my logs. I think it's a WordPress vulnerability they're looking for. Obviously they are not successful (I don't even have Wordpress on my server), but it's annoying and probably resource consuming as well. I am trying to write a bash script that will do the following: Search the apache logs and grab the offending IP's (even if they try it once), Sort them into a list with each unique IP on a seperate line, And then block them using the IP table rules. I am a bash newb, and so far my script does everything except Step 3. I can manually block the IP's, but that's tedious and besides, this is Linux and it's perfectly capable of doing it for me. I also want the script to be customizable so that I (or anyone else who wants to use it) can change the variables to suit whatever situation I/they may deal with in the future. Here is the script so far: #!/bin/bash ##IP LIST GENERATOR ##Author Chev Young ##Script to search Apache logs and list IP's based on custom filters ## ##Define our variables: DIRECT=~/Script ##Location of script&where to put results/temp files LOGFILE=/var/log/apache2/access.log ## Logfile to search for offenders TEMPLIST=xml_temp ## Temporary file name IP_LIST=ipstoban ## Name of results file FILTER1=xmlrpc ## What are we looking for? (Requests we want to ban) cd $DIRECT if [ ! -f $TEMPLIST ];then touch $TEMPLIST ##Create temp file fi cat $LOGFILE | grep $FILTER1 >> $DIRECT/$TEMPLIST ## Only interested in the IP's, so: sed -e 's/\([0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+\).*$/\1/' -e t -e d $DIRECT/$TEMPLIST | sort | uniq > $DIRECT/$IP_LIST rm $TEMPLIST ## Clean temp file echo "Done. Results located at $DIRECT/$IP_LIST" So I need help with the next part of the script, which should ban the IP's (incoming and perhaps outgoing too) from the resulting $IP_LIST file. I don't care if it utilizes UFW or IPTables directly, as long as it bans the IP's. I'd probably run it as a cron task. What I'm having trouble with is understanding how to use line of the result file as a seperate variable to do something like: ufw deny $IP1 $IP2 $IP3, ect Any ideas? Thanks.

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• How to write comments to explain the "why" behind the callback function when the function and parameter names are insufficient for that?

  - by snowmantw

  How should I approach writing comments for callback functions? I want to explain the "why" behind the function when the function and parameter names are insufficient to explain what's going on. I have always wonder why comments like this can be so ordinary in documents of libraries in dynamic languages: /** * cb: callback // where's the arguments & effects? */ func foo( cb ) Maybe the common attitude is "you can look into source code on your own after all" which pushes people into leaving minimalist comments like this. But it seems like there should be a better way to comment callback functions. I've tried to comment callbacks in Haskell way: /** * cb: Int -> Char */ func foo(cb) And to be fair, it's usually neat enough. But it gets into trouble when I need to pass some complex structure. The problem being partly due to the lack of type system: /** * cb: Int -> { err: String -> (), success: () -> Char } // too long... */ func foo(cb) Or I have tried this too: /** * cb: Int -> { err: String -> (), * success: () -> Char } // better ? */ func bar(cb) The problem is that you may put the structure in somewhere else, but you must give it a name to reference it. But then when you name a structure you're about to use immediately looks so redundant: // Somewhere else... // ResultCallback: { err: String -> (), success: () -> Char } /** * cb: Int -> ResultCallback // better ?? */ func foo(cb) And it bothers me if I follow the Java-doc like commenting style since it still seems incomplete. The comments don't tell you anything that you couldn't immediately see from looking at the function. /** * @param cb {Function} yeah, it's a function, but you told me nothing about it... * @param err {Function} where should I put this callback's argument ?? * Not to mention the err's own arguments... */ func foo(cb) These examples are JavaScript like with generic functions and parameter names, but I've encountered similar problems in other dynamic languages which allow complex callbacks.

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• Testing and Validation – You Really Do Have The Time

  - by BuckWoody

  One of the great advantages in my role as a Technical Specialist here at Microsoft is that I get to work with so many great clients. I get to see their environments and how they use them, and the way they work with SQL Server. I’ve been a data professional myself for many years. Over that time I’ve worked with many database platforms, lots of client applications, and written a lot of code in many industries. For a while I was also a consultant, so I got to see how other shops did things as well. But because I now focus on a “set” base of clients (over 500 professionals in over 150 companies) I get to see them over a longer period of time. Many of them help me understand how they use the product in their projects, and I even attend some DBA regular meetings. I see the way the product succeeds, and I see when it fails. Something that has really impacted my way of thinking is the level of importance any given shop is able to place on testing and validation. I’ve always been a big proponent of setting up a test system and following a very disciplined regimen to make sure it will work in production for any new projects, and then taking the lessons learned into production as standards. I know, I know – there’s never enough time to do things right like this. Yet the shops I see that do it have the same level of work that they output as the shops that don’t. They just make the time to do the testing and validation and create a standard that they will follow in production. And what I’ve found (surprise surprise) is that they have fewer production problems. OK, that might seem obvious – but I’ve actually tracked it and those places that do the testing and best practices really do save stress, time and trouble from that effort. We all think that’s a good idea, but we just “don’t have time”. OK – but from what I’m seeing, you can gain time if you spend a little up front. You may find that you’re actually already spending the same amount of time that you would spend in doing the testing, you’re just doing it later, at night, under the gun. Food for thought.  Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Should i continue my self-taught coding practice or learn how to do coding professionally?

  - by G1i1ch

  Lately I've been getting professional work, hanging out with other programmers, and making friends in the industry. The only thing is I'm 100% self-taught. It's caused my style to extremely deviate from the style of those that are properly trained. It's the techniques and organization of my code that's different. It's a mixture of several things I do. I tend to blend several programming paradigms together. Like Functional and OO. I lean to the Functional side more than OO, but I see the use of OO when something would make more sense as an abstract entity. Like a game object. Next I also go the simple route when doing something. When in contrast, it seems like sometimes the code I see from professional programmers is complicated for the sake of it! I use lots of closures. And lastly, I'm not the best commenter. I find it easier just to read through my code than reading the comment. And most cases I just end up reading the code even if there are comments. Plus I've been told that, because of how simply I write my code, it's very easy to read it. I hear professionally trained programmers go on and on about things like unit tests. Something I've never used before so I haven't even the faintest idea of what they are or how they work. Lots and lots of underscores "_", which aren't really my taste. Most of the techniques I use are straight from me, or a few books I've read. Don't know anything about MVC, I've heard a lot about it though with things like backbone.js. I think it's a way to organize an application. It just confuses me though because by now I've made my own organizational structures. It's a bit of a pain. I can't use template applications at all when learning something new like with Ubuntu's Quickly. I have trouble understanding code that I can tell is from someone trained. Complete OO programming really leaves a bad taste in my mouth, yet that seems to be what EVERYONE else is strictly using. It's left me not that confident in the look of my code, or wondering whether I'll cause sparks when joining a company or maybe contributing to open source projects. In fact I'm rather scared of the fact that people will eventually be checking out my code. Is this just something normal any programmer goes through or should I really look to change up my techniques?

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• 2D collision resolving

  - by Philippe Paré

  I've just worked out an AABB collision algorithm for my 2D game and I was very satisfied until I found out it only works properly with movements of 1 in X and 1 in Y... here it is: public bool Intersects(Rectanglef rectangle) { return this.Left < rectangle.Right && this.Right > rectangle.Left && this.Top < rectangle.Bottom && this.Bottom > rectangle.Top; } public bool IntersectsAny(params Rectanglef[] rectangles) { for (int i = 0; i < rectangles.Length; i++) { if (this.Left < rectangles[i].Right && this.Right > rectangles[i].Left && this.Top < rectangles[i].Bottom && this.Bottom > rectangles[i].Top) return true; } return false; } and here is how I use it in the update function of my player : public void Update(GameTime gameTime) { Rectanglef nextPosX = new Rectanglef(AABB.X, AABB.Y, AABB.Width, AABB.Height); Rectanglef nextPosY; if (Input.Key(Key.Left)) nextPosX.X--; if (Input.Key(Key.Right)) nextPosX.X++; bool xFree = !nextPosX.IntersectsAny(Boxes.ToArray()); if (xFree) nextPosY = new Rectanglef(nextPosX.X, nextPosX.Y, nextPosX.Width, nextPosX.Height); else nextPosY = new Rectanglef(AABB.X, AABB.Y, AABB.Width, AABB.Height); if (Input.Key(Key.Up)) nextPosY.Y--; if (Input.Key(Key.Down)) nextPosY.Y++; bool yFree = !nextPosY.IntersectsAny(Boxes.ToArray()); if (yFree) AABB = nextPosY; else if (xFree) AABB = nextPosX; } What I'm having trouble with, is a system where I can give float values to my movement and make it so there's a smooth acceleration. Do I have to retrieve the collision rectangle (the rectangle created by the other two colliding)? or should I do some sort of vector and go along this axis until I reach the collision? Thanks a lot!

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• How do I keep user input and rendering independent of the implementation environment?

  - by alex

  I'm writing a Tetris clone in JavaScript. I have a fair amount of experience in programming in general, but am rather new to game development. I want to separate the core game code from the code that would tie it to one environment, such as the browser. My quick thoughts led me to having the rendering and input functions external to my main game object. I could pass the current game state to the rendering method, which could render using canvas, elements, text, etc. I could also map input to certain game input events, such as move piece left, rotate piece clockwise, etc. I am having trouble designing how this should be implemented in my object. Should I pass references to functions that the main object will use to render and process user input? For example... var TetrisClone = function(renderer, inputUpdate) { this.renderer = renderer || function() {}; this.inputUpdate = input || function() {}; this.state = {}; }; TetrisClone.prototype = { update: function() { // Get user input via function passed to constructor. var inputEvents = this.inputUpdate(); // Update game state. // Render the current game state via function passed to constructor. this.renderer(this.state); } }; var renderer = function(state) { // Render blocks to browser page. } var inputEvents = {}; var charCodesToEvents = { 37: "move-piece-left" /* ... */ }; document.addEventListener("keypress", function(event) { inputEvents[event.which] = true; }); var inputUpdate = function() { var translatedEvents = [], event, translatedEvent; for (event in inputEvents) { if (inputEvents.hasOwnProperty(event)) { translatedEvent = charCodesToEvents[event]; translatedEvents.push(translatedEvent); } } inputEvents = {}; return translatedEvents; } var game = new TetrisClone(renderer, inputUpdate); Is this a good game design? How would you modify this to suit best practice in regard to making a game as platform/input independent as possible?

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• 12.04 Booting into Terminal

  - by user170796

  To preface this, I would like to say that I am completely new to Ubuntu and have essentially zero programming experience/experience working with command line and terminal. I installed Ubuntu because I would like to get into programming. If you could provide me with the simplest instructions possible, I would be grateful. I have a Lenovo Ideapad Y500 (Intel i7, NVidia GT 750m, 1TB HDD, 16GB SSD cache, 8GB RAM) with Windows 8 on it. Using a Live CD, I installed Ubuntu 12.04 onto a 75 GB partition. During the installation, I kept all default settings except for one thing; I decided to encrypt my home folder, and so checked the corresponding box. The installation completed, and I restarted. Once I restarted, I saw the options "Ubuntu, with Linux 3.2.0-23-generic" "Ubuntu, with Linux 3.2.0-23-generic (recovery mode)" "Memory test (memtest86+)" "Memory test (memtest86+, serial console 115200)" "Windows Recovery Environment (loader) (on /dev/sdb3)" "Windows 8 (loader) (on /dev/sdb5)" "System Setup" I chose the first option, and was directed to a screen with the Ubuntu logo and the row of five dots below that change from orange to white. Then, I was brought to a full screen terminal that prompted me to login, which I did. I saw no option to boot into GUI at all, and am lost. I've been searching around and have tried the "startx" command to no avail. Should the command have some sort of context or something? I've also tried selecting the recovery mode option from the boot manager. I've tried the resume option from the following menu, which eventually just shuts down the computer after displaying a lot of scrolling text that's too fast for me to read. I've also tried the failsafex mode from the recovery mode menu, which only brings up a terminal box at the bottom of the window that covers the entire bottom part of the screen. Commands won't work in this window. When I try to access Windows 8, I get a message saying that the EFI file path was not specified or something along those lines. I had to enable Secure Boot in order to access Windows 8 (I had disabled it to be able to boot from the Live CD), which is functioning normally. I am at a complete loss for what to do. Any help will be extremely appreciated. EDIT: Bonus question! If you could figure out a way for me to boot to Windows 8 without having to enable Secure Boot, it would save me a lot of trouble. I can deal with switching every time, but I'd rather not have to.

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• PXE boot linux. PXE-E51: No DHCP or proxyDHCP offers were received

  - by athspk

  I am trying to have an ubuntu box (192.168.10.9) acting as a PXE server, but i have trouble getting DHCP to work. The PXE server is connected to a SOHO router (192.168.10.1) acting as a switch. I have disabled the DHCP server on the router. $ dhcpd --version isc-dhcpd-4.2.4 The contents of /etc/dhcp/dhcpd.conf ddns-update-style none; option domain-name-servers 192.168.10.1; default-lease-time 3600; max-lease-time 7200; authoritative; log-facility local7; allow booting; allow bootp; subnet 192.168.10.0 netmask 255.255.255.0 { range dynamic-bootp 192.168.10.101 192.168.10.200; option routers 192.168.10.1; option broadcast-address 192.168.10.255; next-server 192.168.10.9; filename "/tftpboot/pxelinux.0"; } The contents of /etc/default/isc-dhcp-server INTERFACES="eth0" When the client boots, it tries to get an IP address from the server but fails with the following Error message: PXE-E51: No DHCP or proxyDHCP offers were received. On Server side, i was tailing /var/log/syslog while the client tries to boot: Dec 4 12:57:10 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:11 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:12 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:12 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:17 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:17 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:25 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:25 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Please advise. Thanks in advance

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• Windows 2012/IIS 8 + ASP.NET MVC Applicaiton 403.14 (Forbidden) - The Web server is configured to not list the contents

  - by WiredPrairie

  I have a very simple MVC 4 application I'm trying to deploy to a Windows 2012 server. Inconsistently, when navigating to the root of the web application (http://localhost/app), it returns a 403.14-Forbidden: Detailed Error Information: Module: DirectoryListingModule Notification: ExecuteRequestHandler Handler: StaticFile Error Code: 0x00000000 Requested URL: http://localhost:80/test1/ Physical Path: c:\apps\test1\ Logon Method: Negotiate The web application is: Is a very vanilla VS2012 MVC4 Intranet template -- with only a tweak to a label to prove things were working. runs in an Integrated v4.0 application pool setup to use Windows authentication application pool has a custom AD Identity assigned (so it can gain access to a SQL server) application pool identity has read permissions in the c:\apps\test1 folder in which it is running It's an MVC4 application, targeting .NET 4.0 currently -There's no default document in an MVC4 application (like a default.aspx), as there shouldn't need to be one. I don't want to enable directory listings (as that's not the real error). Installed: Roles / Web Server (IIS) / Appliation Development / (.NET 4.5 Extensibility, Application Initialization, ASP.NET 4.5, ISAP Extensions, ISAPI Filters, WebSocket Protocol) Works locally on my machine in IISExpress on Windows 8 Has configured in web.config: <modules runAllManagedModulesForAllRequests="true" /> is set to precompiled during publish When I change the precompiled option to false, the web application does not fail (in my testing at least, it seems to work consistently). The reason I say it's inconsistent is that I've seen it work, then I've published, and the error returns. I can't find a pattern to the issue (and right now, I haven't been able to get it work again, at all). The 403 is returned from a local or remote web browser. I've had trouble finding a solution that isn't intended for older versions of Windows (like suggestions to reinstall ASP.NET which won't work on Windows 2012). I really don't know what else to try.

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• Watchguard Firewall WebBlocker Regular Expression for Multiple Domains?

  - by Eric

  I'm pretty sure this is really a regex question, so you can skip to REGEX QUESTION if you want to skip the background. Our primary firewall is a Watchguard X750e running Fireware XTM v11.2. We're using webblocker to block most of the categories, and I'm allowing needed sites as they arise. Some sites are simple to add as exceptions, like Pandora radio. That one is just a pattern matched exception with "padnora.com/" as the pattern. All traffic from anywhere on pandora.com is allowed. I'm running into trouble on more sophisticated domains that reference content off of their base domains. We'll take GrooveShark as a sample. If you go to http://grooveshark.com/ and view page source, you'll see hrefs referring to gs-cdn.net as well as grooveshar.com. So adding a WebBlocker exception to grooveshark.com/ is not effective, and I have to add a second rule allowing gs-cdn.net/ as well. I see that the WebBlocker allows regex rules, so what I'd like to do in situations like this is create a single regex rule that allows traffic to all the needed domains. REGEX QUESTION: I'd like to try a regex that matches grooveshark.com/ and gs-cdn.net/. If anybody can help me write that regex, I'd appreciate it. Here is what is in the WatchGuard documentation from that section: Regular expression Regular expression matches use a Perl-compatible regular expression to make a match. For example, .[onc][eor][gtm] matches .org, .net, .com, or any other three-letter combination of one letter from each bracket, in order. Be sure to drop the leading “http://” Supports wild cards used in shell script. For example, the expression “(www)?.watchguard.[com|org|net]” will match URL paths including www.watchguard.com, www.watchguard.net, and www.watchguard.org. Thanks all!

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• HP P212 hangs on Initializing

  - by user927586

  I'm in trouble... Server: HP Microserver N36L Storage: HP P212/256 with BBWC Drives: 4 WD 2 Tb While expanding the RAID 5 array from 3 to 4 drives, the server rebooted itself. Expansion was at 76%. Now at boot the P212 seems to hang on initializing. After some time screen resets and the server boots, but in the os (Windows Server 2008R2) the P212 has errors (error code 10) and it's not seen by the HP ACU. Whats' going on? It's trying to complete the expansion? It's trying to make all over the expansion? It's simply stuck? What should I do? I NEED the data on the array! PS In the server BIOS, on the hd boot priority, the server still reports the array logical drive... maybe it's a good sign... PPS I'm not at the server physical location, so I cannot tell if the drives in the array are being accessed (that would be the case if the controller it's redoing/completing the expansion process) or not right now. Bye Dario

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• Outlook 2007 Backup to D:\Outlook Fails - Access Denied, Write-Protected or File In Use

  - by nicorellius

  I can successfully save the Outlook PST file to the default location on the C drive (C:\Documents and Settings\user\ ... \Outlook) but when I change the backup save to directory to Outlook on the D drive I get the error: Cannot copy Outlook: Access is denied. Make sure the disk is not full or write protected and that the file is not currently in use. I suppose it is not that crucial that I save this file here, but I have never seen this problem before and I have made this same change in the past. I did some searching in this knowledge exchange as well as elsewhere on changing permissions, etc, but this didn't help. I discovered that the folder on my D drive (called Outlook) is not write-protected and nor is it read-only, as I can save to and modify files in that directory, as well as rename and delete the directory itself. At the time when I installed this version of Outlook, I used a previously saved Personal Folder (a backup PST file) and I thought having this still open in Outlook was causing the trouble. But I closed it and still have the same problem. I know this is probably a silly error on my part but I would like to figure it out. I'm new to superuser, but the answers I see are usually very good, so I thought I would post my first question. Thanks in advance.

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• MySQL won't start or won't installed

  - by Owen

  Hi there, I'm trying to get a local LAMP setup on my Ubuntu desktop. I'm successfully got PHP install but I'm having trouble with MySQL If PHP tries to connet to MySQL I get this error: Warning: mysql_connect() [function.mysql-connect]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /var/www/testing.php on line 3 Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) If I try via command line I get much the same error: owen@desktop:~$ mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (13) Weirdly "/var/run/mysqld" does not exist. Running a whereis command I get the following: owen@desktop:~$ whereis mysqld.sock mysqld: /usr/sbin/mysqld /usr/share/man/man8/mysqld.8.gz So is MySQL even installed? Well acording to dpkg owen@desktop:~$ dpkg -l | grep mysql ii libapache2-mod-auth-mysql 4.3.9-13ubuntu1 Apache 2 module for MySQL authentication ii libdbd-mysql-perl 4.016-1 Perl5 database interface to the MySQL database ii libmysqlclient15off 5.1.30really5.0.83-0ubuntu3 MySQL database client library ii libmysqlclient16 5.1.49-1ubuntu8.1 MySQL database client library ii mysql-admin 5.0r14+openSUSE-2.1 GUI tool for intuitive MySQL administration ii mysql-client-5.1 5.1.49-1ubuntu8.1 MySQL database client binaries ii mysql-client-core-5.1 5.1.49-1ubuntu8.1 MySQL database core client binaries ii mysql-common 5.1.49-1ubuntu8.1 MySQL database common files, e.g. /etc/mysql/my.cnf ii mysql-gui-tools-common 5.0r14+openSUSE-2.1 Architecture independent files for MySQL GUI Tools ii mysql-query-browser 5.0r14+openSUSE-2.1 Official GUI tool to query MySQL database ii mysql-server 5.1.49-1ubuntu8.1 MySQL database server (metapackage depending on the latest version) ii mysql-server-5.1 5.1.49-1ubuntu8.1 MySQL database server binaries and system database setup ii mysql-server-core-5.0 5.1.30really5.0.83-0ubuntu3 MySQL database core server files ii mysql-server-core-5.1 5.1.49-1ubuntu8.1 MySQL database server binaries ii php5-mysql Can someone please help I'm really confused as what to do next. I'm not a Linux expert at all most of these commands I've ran I found of diffrent blogs and help forums.

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• Windows Server Backup - Recover only shows the latest backup

  - by Steffen

  We're having quite some trouble at work using Windows Server Backup. We have a HyperV server (Win 2008) running 8 virtual web servers, these are running a variety of OS'es: Win 2003, Win 2008 and a lone Debian. Each virtual server has a separate partition on the physical HyperV server, so e.g. E: is virtual server #1, F: is #2 and so forth. For backup we use Windows Server Backup, or more exactly we use the commandline tool: wbadmin.exe We need to make the backups without stopping the virtual servers, as we cannot afford the downtime (we've got users online both day and night), and Windows Server Backup offers to use the shadow copy provider to archive this. We run wbadmin like this: wbadmin start backup -backuptarget:\\remotebackuplocation\somefolder -include:E: -quiet We run it once per partition, because we've got a script wrapped around that command, for sending us an email about how it went. Each time we run wbadmin it'll delete the Backup xxxx folder it created in last backup, and just create a new. In order to prevent this from happening, we rename the backup xxx folder after each backup is run, before starting the next one. I realize we must rename it back to its original name prior to recovering, and we obviously do this. Now the issue is as follows: Even though we have all the backed up files, and rename whichever backup we want to use, to its original name, we can only see the latest backup in the Windows Server Backup GUI when we select "Recover". This means we can only recover the last partition we backup up, so e.g. E: can never be recovered. In other words we're screwed :-( My question is: Does anyone know how to use Windows Server Backup for a scenario like this ? Or is it simply not possible due to the simplicity of Windows Server Backup ? If it's not possible, could you recommend some backup software for this purpose ? We've already looked at MS' System Center Data Protection Manager, however it's quite expensive and the boss doesn't like that :-/

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• How to set up the CNAME in DNS zone record to work with Unbounce

  - by Lirik

  I'm trying to run split testing on some landing pages I "designed" with Unbounce, but it requires that I set the CNAME record for my domain/sub-domain and I'm having trouble figuring out what is the right way to do it. My host is arvixe (www.arvixe.com) and their customer support has failed to help me for the past 5 days (I spoke to them multiple times). I followed the directions for setting the CNAME record and I was able to set the CNAME record, but I'm consistently unable to verify that the CNAME record is set up correctly. I followed the instructions on Unbounce to verify the CNAME record for my sub-domain (beta.devboost.com) and here are the results: No records found reverse lookup smtp diag port scan blacklist Reported by ns1.SNARE.arvixe.com on Thursday, November 10, 2011 at 5:49:57 PM (GMT-6) Here is my DNS zone record from the control panel of my host (last record, CNAME unbouncepages.com): Is there something wrong with my DNS Zone Record? What's the right way to do this? Update: I also have a CNAME record for beta in my root domain (devboost.com): I've updated my sub-domain record now: I've removed most of the other DNS records and I've removed the beta label for the CNAME record: Is that correct? Is there anything else I need to do?

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• uWSGI log file...permission denied to read file

  - by bkev

  I have a server running Django/Nginx/uWSGI with uWSGI in emperor mode, and the error log for it (the vassal-level error log, not the emperor-level log) has a continual permissions error every time it spawns a new worker, like so: Tue Jun 26 19:34:55 2012 - Respawned uWSGI worker 2 (new pid: 9334) Error opening file for reading: Permission denied Problem is, I don't know what file it's having trouble opening; it's not the log file, obviously, since I'm looking at it and it's writing to that without issue. Any way to find out? I'm running the apt-get version of uWSGI 1.0.3-debian through Upstart on Ubuntu 12.04. The site is working successfully, aside from what seems like a memory leak...hence my looking at the log file. My Upstart conf file description "uWSGI" start on runlevel [2345] stop on runlevel [06] respawn env UWSGI=/usr/bin/uwsgi env LOGTO=/var/log/uwsgi/emperor.log exec $UWSGI \ --master \ --emperor /etc/uwsgi/vassals \ --die-on-term \ --auto-procname \ --no-orphans \ --logto $LOGTO \ --logdate My Vassal ini file: [uwsgi] # Variables base = /srv/env/mysiteenv # Generic Config uid = uwsgi gid = uwsgi socket = 127.0.0.1:5050 master = true processes = 2 reload-on-as = 128 harakiri = 60 harakiri-verbose = true auto-procname = true plugins = http,python cache = 2000 home = %(base) pythonpath = %(base)/mysite module = wsgi logto = /srv/log/mysite/uwsgi_error.log logdate = true

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• Android SDK emulator freezes on a Mac running OS X 10.6 Snow Leopard

  - by Donald Burr

  I'm having trouble running the Android SDK on both of my Macs running OS X 10.6.2 Snow Leopard. This appears to be a 64 bit vs. 32 bit issue, as Snow Leopard now defaults to 64-bit everything, including the Java virtual machine. I found this webpage with instructions on how to get the Android tools to run in the 32-bit Java VM, and I am now able to run the Android GUI tool to download SDK files, create AVM's, etc. However, when I try the Hello World tutorial and get to the point where I run my application under the Android emulator, everything goes south. The emulator appears to start but it hangs (spinning beachball of death cursor) without displaying anything. (This only hangs the emulator; the rest of the system still works fine.) If I follow the exact same steps (minus the 32-bit java hack) in a Windows virtual machine, everything works fine. Googling didn't yield anything useful (except for the 32-bit java hack I spoke of earlier). This occurs on both my Mac Pro tower and 13" MacBook Pro. Does anyone have any suggestions?

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• Ipsec reload fails to load ipsec.conf Strongswan 5.0

  - by Quentin Swain

  I am having trouble configuring a connection to an Android device using a fedora 17 linux machine and strongSwanv5.0.1dr2. I have made some progress but when I try adding the configuration to support xauth authentication I receive an error when I try to reload the configuration file. I get a similar error for the value ikev1 for the keyexchange setting , and whenever i try to set a value for rightauth. Has anyone else had this problem The man page for ipsec.conf and the documentation on the strongswan wiki both indicated that these settings and values should be fine in 5.0.x.x. I could try setting authby but that is deprecated according to the documentation i read and the xauthpsk value isn't working. Any help is much appreciated thanks. can not load config '/etc/ipsec.conf': /etc/ipsec.conf:25: syntax error, unexpected STRING [leftauth] # /etc/ipsec.conf - Openswan IPsec configuration file # # Manual: ipsec.conf.5 # # Please place your own config files in /etc/ipsec.d/ ending in .conf version 2.0 # conforms to second version of ipsec.conf specification # basic configuration config setup # For Red Hat Enterprise Linux and Fedora, leave protostack=netkey protostack=netkey # Enable this if you see "failed to find any available worker" # nhelpers=0 plutodebug=all conn %default ikelifetime=240m #keylifetime=20m keyingtries=3 ikev2=no conn android left=10.1.12.212 right=10.1.12.140 leftxauthserver=yes leftauth=psk rightauth=xauth keyexchange=ikev1 type=tunnel pfs=no rekey=no auto=start ike=aes256-md5;modp1024 phase2=esp ikev2=no #You may put your configuration (.conf) file in the "/etc/ipsec.d/" #include /etc/ipsec.d/*.conf

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• ESXi 4.1 host not recognising existing VMFS datastore

  - by Graeme Donaldson

  Existing setup: host1 and host2, ESX 4.0, 2 HBAs each. lun1 and lun2, 2 LUNs belonging to the same RAID set (my terminology might be sketchy here). This has been working just fine all along. I added host3, ESXi 4.1, 2 HBAs. If I view Configuration / Storage Adapters, I can see that both HBAs see both LUNs, but if I view Configuration / Storage, I only see 1 datastore. host1/2 can see both LUNs and I have VMs running on both too. I have rescanned, refreshed and even rebooted, but host3 refuses to acknowledge 1 of the datastores. Does anyone know what's going on? Update: I re-installed the host with ESX (not i) 4.0, same version as the existing hosts and it's still not recognising the vmfs. I think I'm going to SVmotion everything off that datastore then format it. Update2: I've created the LUN from scratch and the problem gets even weirder. I've presented the LUN to all 3 hosts, and I can see the LUN in the vSphere client's Configuration / Storage Adapters section on all 3 hosts. If I create a datastore on the LUN via the Configuration / Storage section on host1, it works fine and I can create an empty folder via datastore browser, but the datastore is not seen by the host2 and host3. I can use the Add Storage wizard on host2 and it will see the LUN. At this point the "VMFS Label" column has the label I gave with "(head)" appended. If I try the Add Storage wizard's "Keep the existing signature" option, it fails with an error "Cannot change the host configuration." and a dialog box that says 'Call "HostStorageSystem.ResolveMultipleUnresolvedVmfsVolumes" for object "storageSystem-17" on vCenter Server "vcenter.company.local" failed.' If I try the Add Storage wizard's "Assign a new signature" option on host2, it will complete and the VMFS label will have "snap-(hexnumber)-" prepended. At this point its also visible on host3, but not host1. I have a similar setup in a different datacenter which didn't give me all this trouble.

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• BizTalk MQSC adapter configuration error & IBM WebSphere MQ Client V6.0

  - by chinna

  Hi Guys, I'm having trouble configuring the MSQC adapter for BizTalk Server 2006. At the moment I'm getting the following error when setting up a receive location or send port: The adapter "MQSC" raised an error message. Details "The specified module could not be found. (Exception from HRESULT: 0x8007007E) A dependency could not be found. Refer to product documentation for information on MQSC Adapter software prerequisites.".For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. I have installed the IBM WebSphere Client v6.0 installed but was unable to find the "IBM fix pack 6.0.1.1" for the WebSphere CLIENT as some people have suggested. I have found this post (http://www.biztalkgurus.com/forums/p/3719/7212.aspx) which seems to shed some light on this issue, but I am unable to find the fix-pack that they speak of or resolve the problem Is anybody able to provide any further information? A link to download the IBM WebSphere MQ Client V6.0 fix pack 6.0.1.1 would be a great start! Thanks, Jason

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• pGina with automatic Kerberos ticket and OpenAFS token/ticket

  - by rolands

  I am currently updating our educational Windows lab images from XP to 7, In doing so we are also migrating from Comtarsia to pGina. Unfortunately somewhere in the transition our automation that fetched kerberos and OpenAFS tickets/tokens on login has completely stopped functioning. Basically what used to happen was, using kfw-3.2.2 and the old OpenAFS release (loopback adapter days), either comtarsia would share password or something with the NIM (Network Identity Manager) which would authenticate against the kerberos server gaining a ticket and AFS token needed to access the users file, this was aided by the fact that our ldap database that windows authenticates against is also what kerberos uses to authenticate so usernames/passwords are the same across both services. I have set up all of the tools, albeit newer 64bit versions which seem to have given me less trouble than the previous releases of NIM/OpenAFS/Krb5, as well as setting their configurations back to what we used to use. Unfortunately this seems to be fubar'd in some way, instead all we get now is a OpenAFS token, most likely I assume from the AFScreds tool which operates some kind of integrated login process, although this does not help in getting a kerberos ticket or a afs ticket for which a login box is provided be NIM after the user logs in. Does anyone know IF it is possible to do what we are trying, and if so how? I was considering writing a pGina plugin which would interact with the server itself but this seems slightly like overkill considering that all these applications already exist...

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