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  • Linux RAID0 - relocating member disk

    - by qdot
    I've got an issue I would rather handle with the array online - I am using RAID0 for temporary video storage - data that is low-cost to restore, but that is used frequently. The software array looks like this: md1 : active raid0 sdb1[2] sdc1[3] sdd1[0] sde1[1] 1953487616 blocks 64k chunks I have another partition (sda1) in this system, that I want to use to replace sdc1 (The drives are of varying age, and sdc1 is definitely the slowest one, limiting the entire array's sequential read performance to only 300MB/s). Is there a way to migrate the data from sdc1 to sda1 while the array is still online?

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  • Deploying a Rails app on an Ubuntu server using Git

    - by NudeCanalTroll
    I'm completely new to Linux, but today I find myself setting up a server (Ubuntu 10.04 LTS lucid) from scratch to host a Rails application. Anyway, I managed to get a Rails app up and running on the server itself, but I had to scrap that because I want to use Git. So I setup a git repository on the server, then pushed all the code from my local machine to the repository. Buuuut, of course Git doesn't actually store the files themselves in the repository -- all the code for my Rails app is now only on my local machine. How am I supposed to tell the server to host that? Right now my solution is to have the server use git to pull the code from its own repository. That's the code I'll host for all the world to see. In order to update the code, I guess I'll have to do something like this: Update the code on my local machine. Do some git adds, git commits, and a git push. On the server, do a git pull to update the code. So my question is, am I doing this the right way? enter code here

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  • Using sigprocmask to implement locks

    - by EpsilonVector
    I'm implementing user threads in Linux kernel 2.4, and I'm using ualarm to invoke context switches between the threads. We have a requirement that our thread library's functions should be uninterruptable, so I looked into blocking signals and learned that using sigprocmask is the standard way to do this. However, it looks like I need to do quite a lot to implement this: sigset_t new_set, old_set; sigemptyset(&new_set); sigaddset(&new_set, SIGALRM); sigprocmask(SIG_BLOCK, &new_set, &old_set); This blocks SIGALARM but it does this with 3 function invocations! A lot can happen in the time it takes for these functions to run, including the signal being sent. The best idea I had to mitigate this was temporarily disabling ualarm, like this: sigset_t new_set, old_set; time=ualarm(0,0); sigemptyset(&new_set); sigaddset(&new_set, SIGALRM); sigprocmask(SIG_BLOCK, &new_set, &old_set); ualarm(time, 0); Which is fine except that this feels verbose. Isn't there a better way to do this?

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  • I'm trying to run a command using WMI.

    - by MIchael Burns
    This is my code: a button is clicked and the text in a textbox is taken for the remotePC. I can run it locally but when I try to run it remotely it will not work, I think it has something to do with using WMI to run a shared file? public void IPXFER(string RemotePC) { object[] theProcessToRun = { @"\\network-share\ipxfer\ipxfer.exe -s corp-trend -p 1234 -m 1 -c 12345" }; ConnectionOptions theConnection = new ConnectionOptions(); theConnection.Impersonation = ImpersonationLevel.Impersonate; theConnection.EnablePrivileges = true; ManagementScope theScope = new ManagementScope("\\\\" + RemotePC + "\\root\\cimv2", theConnection); ManagementClass theClass = new ManagementClass(theScope, new ManagementPath("Win32_Process"), new ObjectGetOptions()); theClass.InvokeMethod("Create", theProcessToRun); }

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  • Making a bootable image of linux Red Hat Ent Es for a VM

    - by djshortbus
    I have a old server running Red Hat that has some valuable apps installed. I would like to create a bootable image of the drive and install it in a VM on a newer server. i am trying to avoid reinstalling Red Hat the apps and data. Any useful links or advice would be greatly appreciated.(Not yet decided on the VM Software)

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  • Webserver sending corrupt or corrupting served files

    - by NotIan
    EDIT: Looks like the problem was a rootkit that corrupted a bunch of low level linux commands, including top, ps, ifconfig, netstat and others. The problem was resolved by taking all web files off the server and wiping it. A dedicated server we operate is having a strange issue. Files are not be sent complete or are showing up with garbage data. Example: http://sustainablefitness.com/images/banner_bootcamps.jpg To make matters more confusing this corruption does NOT happen when the files are served as https, (I would post a link, but I don't have enough rep points, just add an 's' after http in the link above.) When I throw load at the server, I get dozens of (swapd)s in top this is the only thing that really jumps out. I can't post images but ( imgur.com / ZArSq.png ) is a screenshot of top. I have tried a lot of stuff so far, I am willing to try anything that I can. A dedicated server we operate is having a strange issue. Files are not be sent complete or are showing up with garbage data. Example: http://sustainablefitness.com/images/banner_bootcamps.jpg To make matters more confusing this corruption does NOT happen when the files are served as https, (I would post a link, but I don't have enough rep points, just add an 's' after http in the link above.) When I throw load at the server, I get dozens of (swapd)s in top this is the only thing that really jumps out. I can't post images but ( imgur.com / ZArSq.png ) is a screenshot of top. I have tried a lot of stuff so far, I am willing to try anything that I can.

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  • Add zip files from one archive to another using command line

    - by Curious2learn
    I have two zip archives. Say, set1 has 10 csv files created using Mac OS X 10.5.8 compress option, and set2 has 4 csv files similarly created. I want to take the 4 files from zipped archive set2 and add them to list of files in archive set1. Is there a way I can do that? I tried the following in Terminal: zip set1.zip set2.zip This adds the whole archive set2.zip to set1.zip, i.e., in set1.zip now I have: file1.csv, file2.csv,..., file10.csv, set2.zip What I instead want is: file1.csv, file2.csv,..., file10.csv, file11.csv, ..., file14.csv where, set2.zip is the archive containing file11.csv, ..., file14.csv. Thanks.

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  • gcc c++ command line error-message parser

    - by Autopulated
    Are there any programs for parsing and displaying in a nice format the c++ error messages generated by gcc. I'm really looking for something like less that I can pipe my errors into that will collapse the template parameter lists by default, maybe with some nice highlighting so that my errors are actually readable. (Yes, it's boost's fault I have such incomprehensible errors, in case you were wondering)

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  • Drawing an image in Java, slow as hell on a netbook.

    - by Norswap
    In follow-up to my previous questions (especially this one : http://stackoverflow.com/questions/2684123/java-volatileimage-slower-than-bufferedimage), i have noticed that simply drawing an Image (it doesn't matter if it's buffered or volatile, since the computer has no accelerated memory*, and tests shows it's doesn't change anything), tends to be very long. (*) System.out.println(GraphicsEnvironment.getLocalGraphicsEnvironment() .getDefaultScreenDevice().getAvailableAcceleratedMemory()); --> 0 How long ? For a 500x400 image, about 0.04 seconds. This is only drawing the image on the backbuffer (obtained via buffer strategy). Now considering that world of warcraft runs on that netbook (tough it is quite laggy) and that online java games seems to have no problem whatsoever, this is quite thought provoking. I'm quite certain I didn't miss something obvious, I've searched extensively the web, but nothing will do. So do any of you java whiz have an idea of what obscure problem might be causing this (or maybe it is normal, tough I doubt it) ? PS : As I'm writing this I realized this might be cause by my Linux installation (archlinux) tough I have the correct Intel driver. But my computer normally has "Integrated Intel Graphics Media Accelerator 950", which would mean it should have accelerated video memory somehow. Any ideas about this side of things ?

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  • SQL Server Query Command

    - by Scott Jackson
    Hi, I have an SQL database table, I want to find everything in a table where the 'Room' says 'DISPOSED', Insert 'DISPOSED' into the 'Status' field and then delete the entry in 'Room'. Basically moving the entry from one field to another (if the 'Room' field has 'DISPOSED' in it) Hope this makes sense. Thanks for any help.

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  • Deploying a Web Application from the command line

    - by Grant
    Hi. Im looking to deploy a web application on a build server. It is a very small web app and so far i have written a nice little console app that checks out from SVN and then calls msbuild on the .sln file. This of course is not the same as publishing a web app and so far have not found a programatic way of publishing. So my question is this.. After msbuild has run can i simply delete all .cs and .vb files and then deploy? or Should i really try and find a way to publish programatically?

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  • How to get Doxygen to recognize custom latex command

    - by Halpo
    Is there a way to use extra latex packages and/or extra latex commands with Doxygen code documentation system. For example I define the shortcut in a custom sty file. \newcommand{\tf}{\Theta_f} Then I use it about 300 time in the code, which is across about a dozen files. /*! Stochastic approximation of the latent response*/ void dual_bc_genw( //... double const * const psi, ///< \f$ \psi = B\tf \f$ //... ){/* lots of brilliant code */} But how do I get the system to recognize the extra package.

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  • Gluing tiles together using imagemagick's montage command

    - by AP257
    This seems like it might be a reasonably common question, so I'm going to ask it using as many keywords as I can think of! I have a bunch of (well, nine) tile jpegs, with standard tile filenames. Each jpeg is 220x175 pixels: (top row) tile_1_0_0.jpg tile_1_1_0.jpg tile_1_2_0.jpg (middle row) tile_1_0_1.jpg tile_1_1_1.jpg tile_1_2_1.jpg (bottom row) tile_1_0_2.jpg tile_1_1_2.jpg tile_1_2_2.jpg How can I use imagemagick/montage to 'glue' or join them all together to make a single, coherent image? I don't want to resize them at all, so I guess the final image should be 660x525. That would be montage with no framing, shadowing, bordering, etc - just the nine original images, glued together to make a single jpeg. I know it should be something along these lines, but I'm struggling with getting the order and sizing right: montage +frame +shadow +label -tile 3x3 -geometry <options> *.jpg joined.jpg

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  • Call a Firebug command from client code.

    - by ProfK
    I would like to apply some sort of IoC, with debugee code, i.e. the current HTML document, and the debugger, Firebug. It would be great to have some sort of document that asks Firebug to open a push channel from the document, versus the more common scenario of the debugger pulling information from the debugee document. Is this possible and or feasible?

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  • Can a Linux system crash cause network issues?

    - by Supratik
    I have a Ubuntu box in my network which crashed, all the system connected to the switch in which the Ubuntu system was connected started giving problem. I removed that system from the network, since that was the last change I made in my network and everything was fine. So, to confirm this I again connected the system back to the network and the same network outage happened. When I checked the links it was fine. When I rebooted the problematic system and again connected back to the network switch everything started working. I think possibly the crash of the Ubuntu system could have caused this outage. Is there any possibility that a kernel crash can cause network issues?

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  • jQuery attr command

    - by senzacionale
    I want to add a value to the onchange event, but the JS code has errors $(args).attr('onChange', 'setTimeout('__doPostBack(\'ctl00$cpBody$txtDate\',\'\')', 0)'); anyone see error?

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  • Linux Centos 6 becomes unavailable from time to time - OS&network issue

    - by adoado0
    I am encountering following problem. There is one server (DL160 G5) running Centos 6.3 with default kernel 2.6.32-220.2.1.el6.x86_64 - at this point I'd like to add that issue appeared also at older version - 6.1 and older kernel (do not remember exactly which version). There is cPanel installed and from time to time it becomes unavailable (network connection). What I've checked is (via KVMoIP): load average is completely normal it does not lack memory or disk space when problem occurs no console notifications checked all access logs and there is no sign that it can be caused by a client script cannot even access local interface (127.0.0.1) or main IP address running tcpdump I can only see packets arriving to server - no responses all services seem to be running properly (mail,sql,http,ssh) checked crontab and all clients' crontabs too network port utilisation is low ( up to several Mbits) arriving packet rate is low - hundreds per second (according to tcpdump) console (via kvmoip) works fine, no lags there is no conntrack at this server there is no ipv6 at this server flushing iptables, unloading modules does not resolve problem restarting network does not resolve problem, no errors appear it also occurs when two sepearate networks are configured (and multiple gateways) as well as one IP, one default gw and one network is configured - so it seems network configuration independent it seems to repeat randomly (load,packet rate,bandwith usage,load independent) checked server with different rootkit detection tools - it seems to be clean server has been rebooted, it did not change anything there are no interface errors it apperas randomly can be once a week or several times per day It usually works fine after 1-15 minutes. What I can also check? It is definitely OS issue - there is traffic at interface only in one direction when problem occurs, can not even ping loopback. Any ideas? Recommended checks? Anything I did not checked above.

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  • Wpf user control button command is not firing in viewmodel

    - by mani1985
    hi, i have a user control in which there is a button. i wrote icommand in the viewmodel for the button to call some function. when i use this user control in some other page ,the user control button click is not working. my xaml Save my view model private ICommand _insertNewNote; public ICommand InsertNewNote { get { if (_insertNewNote == null) { _insertNewNote = new RelayCommand( param = this.InsertNewExceptionNote()); } return _insertNewNote; } } public void InsertNewExceptionNote() { //... } my problem is when i use this user control in some page like this the user control is getting displayed in the page. but the button in the user control is not firing when i click it. user control view model icommand is not at all initialized. please provide me a solution. Thanks in advance.

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  • Common folder in linux

    - by rks171
    I have two users on my Ubuntu machine. I want to share some media files between these users, so I created a directory in /home/ called 'media'. I made the group 'media' and I added my user 'rks171' to the group 'media'. So: sudo groupadd media sudo mkdir -p /home/media sudo chown -R root.media /home/media sudo chmod g+s /home/media As was described in this post. Then, I added my user to the group: sudo usermod -a -G media rks171 Then I also added write permission to this folder for my group: sudo chmod -R g+w media So now, doing 'ls -lh' gives: drwxrwsr-x 2 root media 4.0K Oct 6 09:46 media I tried to copy pictures to this new directory from my user directory: mv /home/rks171/Pictures/* /home/media/ And I get 'permission denied'. I can't understand what's wrong. If I simply type, 'id', it doesn't show that my user, rks171, is part of the 'media' group. But if I type, 'id rks171', then it does show that my user, rks171, is part of the 'media' group. Anybody have any ideas why I can't get an files into this common folder?

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  • How to color HTML elements based on parsing a user command string

    - by Anonymous the Great
    I'm working on a little parsing thing to color objects. For an example, you could type red:Hi!: and "Hi!" would be red. This is my not working code: <script type="text/javascript"> function post() { var preview = document.getElementById("preview"); var submit = document.getElementById("post"); var text = submit.value; <?php str_replace("red:*:",'<i class="red">*</i>',text); ?> preview.value = text; } </script>

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  • Install Debian stable linux ISO from USB to dual boot Windows

    - by tgkprog
    I want debian as dual boot with my windows vista, Free'd up 50GB in my d drive. Plan to use 40 for debian install, 6GB for swap space Have a 16GB USB drive Downloaded http://unetbootin.sourceforge.net/ Downloaded DVD files of stable debian-7.0.0-amd64-DVD-1.iso ( debian-7.0.0-amd64-DVD-2.iso and 3) After I choose HD install, unetbootin says place the ISO in the same place. but I have 3. do i need to merge them? if so any freeware to do that? can i do it with 7zip? when I extract with 7 zip there are classes between the 3 ISO files. Just over write? Options to merge (format etc for 7zip) ? Or I must use I tried to keep the 3 files with the other unetbootin files but get an error msg Files I have on my USB 06/30/2013 11:44 PM 2,835,648 ubnkern 06/05/2013 12:14 AM 3,998,007,296 debian-7.0.0-amd64-DVD-1.iso 06/04/2013 03:30 PM 4,696,872,960 debian-7.0.0-amd64-DVD-2.iso 06/05/2013 01:25 AM 4,698,955,776 debian-7.0.0-amd64-DVD-3.iso 06/30/2013 11:45 PM 6,530,278 ubninit 06/30/2013 11:46 PM 155 syslinux.cfg 06/30/2013 11:46 PM 60,928 menu.c32 also i can only copy above files if i format my USB as NTFS On FAT32 says too large to copy .iso How do I get around that? My internet needs a login so cannot do net install

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  • Error log of make command in Linux

    - by dexkid
    I am compiling a kernel module and it has many compilation errors in it. After running "make", the errors thrown out are too many to fit in the screen. Scrolling up doesn't reach the first error. I tried capturing the errors by doing make &2 log which didn't work (log file was empty and the error messages were still dumped on screen). Can someone please tell me how to go about logging all the messages generated during compilation/make into a logfile?

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