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  • Linux Server partitioning

    - by user1717735
    There's a lot of infos about this out there, but there's also a lot of contradictory infos… That's why i need some advices about it. So far, on the servers i had home for test (or even "home production") purposes i didn't really care about partitioning and i configured all in / + a swap partition, over RAID 0. Nevertheless, this pattern can't apply to production servers. I have found a good starting point here, but also it depends on what the servers will be used for… So basically, i have a server on which there will be apache, php, mysql. It will have to handle file uploads (up to 2GB) and has 2*2TB hard drive. I plan to set : / 100GB, /var 1000GB (apache files and mysql files will be here), /tmp 800GB (handles the php tmp file) /home 96GB swap 4GB All of this if of course over RAID 1. But actually, it's not a big deal if I lose data being uploaded, so would it be interesting mounting /tmp over raid 0 while maintaining the rest over raid 1? Sounds complicated…

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  • Seg Fault when using std::string on an embedded Linux platform

    - by Brad
    Hi, I have been working for a couple of days on a problem with my application running on an embedded Arm Linux platform. Unfortunately the platform precludes me from using any of the usual useful tools for finding the exact issue. When the same code is run on the PC running Linux, I get no such error. In the sample below, I can reliably reproduce the problem by uncommenting the string, list or vector lines. Leaving them commented results in the application running to completion. I expect that something is corrupting the heap, but I cannot see what? The program will run for a few seconds before giving a segmentation fault. The code is compiled using a arm-linux cross compiler: arm-linux-g++ -Wall -otest fault.cpp -ldl -lpthread arm-linux-strip test Any ideas greatly appreciated. #include <stdio.h> #include <vector> #include <list> #include <string> using namespace std; ///////////////////////////////////////////////////////////////////////////// class TestSeg { static pthread_mutex_t _logLock; public: TestSeg() { } ~TestSeg() { } static void* TestThread( void *arg ) { int i = 0; while ( i++ < 10000 ) { printf( "%d\n", i ); WriteBad( "Function" ); } pthread_exit( NULL ); } static void WriteBad( const char* sFunction ) { pthread_mutex_lock( &_logLock ); printf( "%s\n", sFunction ); //string sKiller; // <----------------------------------Bad //list<char> killer; // <----------------------------------Bad //vector<char> killer; // <----------------------------------Bad pthread_mutex_unlock( &_logLock ); return; } void RunTest() { int threads = 100; pthread_t _rx_thread[threads]; for ( int i = 0 ; i < threads ; i++ ) { pthread_create( &_rx_thread[i], NULL, TestThread, NULL ); } for ( int i = 0 ; i < threads ; i++ ) { pthread_join( _rx_thread[i], NULL ); } } }; pthread_mutex_t TestSeg::_logLock = PTHREAD_MUTEX_INITIALIZER; int main( int argc, char *argv[] ) { TestSeg seg; seg.RunTest(); pthread_exit( NULL ); }

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  • wopen calls when porting to Linux

    - by laura
    I have an application which was developed under Windows, but for gcc. The code is mostly OS-independent, with very few classes which are Windows specific because a Linux port was always regarded as necessary. The API, especially that which gets called as a direct result of user interaction, is using wide char arrays instead of char arrays (as a side note, I cannot change the API itself - at this point, std::wstring cannot be used). These are considered as encoded in UTF-16. In some places, the code opens files, mostly using the windows-specific _wopen function call. The problem with this is there is no wopen-like substitute for Linux because Linux "only deals with bytes". The question is: how do I port this code ? What if I wanted to open a file with the name "something™.log", how would I go about doing so in Linux ? Is a cast to char* sufficient, would the wide chars be picked up automatically based on the locale (probably not) ? Do I need to convert manually ? I'm a bit confused regarding this, perhaps someone could point me to some documentation regarding the matter.

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  • C++: Code assistance in Netbeans on Linux

    - by Martijn Courteaux
    Hi, My IDE (NetBeans) thinks this is wrong code, but it compiles correct: std::cout << "i = " << i << std::endl; std::cout << add(5, 7) << std::endl; std::string test = "Boe"; std::cout << test << std::endl; He always says: unable to resolve identifier .... (.... = cout, endl, string); So I think it has something to do with the code assistance. I think I have to change/add/remove some folders. Currently, I have this include folders: C compiler: /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include-fixed /usr/include C++ compiler: /usr/include/c++/4.4.3 /usr/include/c++/4.4.3/i486-linux-gnu /usr/include/c++/4.4.3/backward /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include /usr/include Thanks

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  • Programming Environment for a Motorola 68000 in Linux

    - by Nick Presta
    Greetings all, I am taking a Structure and Application of Microcomputers course this semester and we're programming with the Motorola 68000 series CPU/board. The course syllabus suggests running something like Easy68K or Teesside Motorola 68000 Assembler/Emulator at home to test our programs. I told my prof I run x64 Linux and asked what sort of environment I would need to complete my coursework. He said that the easiest environment to use is a Windows XP 32bit VM with one of the two suggested applications installed, however, he doesn't really care what I use as long as I can test what I write at home. So I'm asking if there exists some sort of emulator or environment for Linux so I can test my code, and what sort of caveats I will run into by writing and testing my code in Linux. Also, I plan to do my editing in Vim, which probably isn't a problem, but I would like any insight into editors for 68000 assembly, if you have any. Thanks! EDIT: Just to clarify - I don't want to install Linux on the board at all - I want to program on my home machine, test the code locally, and then bring it onto the board for grading/running.

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  • How do I find the current virtual terminal

    - by camh
    I am working around a problem in Ubuntu 10.04 where after resume, the mouse cursor disappears. This can be "fixed" by running chvt 1; chvt 7 in a script in /etc/pm/sleep.d, such that those commands run on thaw and resume. However, the X console is not always vt #7, so chvt 7 is wrong in those cases. What I would like to do is find out the current vt in the fix-up script and make sure I change back to that vt. How can I find the current vt? (tty(1) just reports "not a tty")

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  • C++: IDE Code assistance (Linux)

    - by Martijn Courteaux
    Hi, My IDE (NetBeans) thinks this is wrong code, but it compiles correct: std::cout << "i = " << i << std::endl; std::cout << add(5, 7) << std::endl; std::string test = "Boe"; std::cout << test << std::endl; He always says: unable to resolve identifier .... (.... = cout, endl, string); So I think it has something to do with the code assistance. I think I have to change/add/remove some folders. Currently, I have this include folders: C compiler: /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include-fixed /usr/include C++ compiler: /usr/include/c++/4.4.3 /usr/include/c++/4.4.3/i486-linux-gnu /usr/include/c++/4.4.3/backward /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include /usr/include Thanks

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  • Quick introduction to Linux needed [closed]

    - by 0xDEAD BEEF
    Hi guys! I have to get into Linux ASAP and realy mean ASAP. I have installed Cygwin but as allways - things dont go as easy as one would like. First problem i enconter was - i choose KDE package, but there is no sign of KDE files anywhere in cygwin folder. How do i run KDE windows. Currently startx fires, but all looks ugly! My desire is to download and run Qt Creator. Seems that there is no cygwin package, but downloading source and compiling is good to go. Only that i have forgoten every linux command i ever knew! :D Please - what are default commands u use on linux? What does exec do? what ./ stands for? What is directory strucutre and why there is such mess in bin folder? Thanks god - i have windows over cygwin, so downloading files is not a problem, but again -how do i unpack them in linux style and how to i build? simply issue "make" command from folder, where i extracted files? Please help!

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  • find string from the file in somewhere

    - by lightmanhk
    I want to find a string from some file in subdirectory. Like we are in bundle/. and in bundle/ there are multiple subdirectories and multiple txt files I want to do something like find . -type f -exec grep "\<F8\>" {} \; want to get the file where it contain string < F8 this command does work, find the string, but never return filename I hope anyone can give me a better solution to this, like display filename along with the line containing that string

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  • Windows 2008 terminal server - How to restrict access to DVD/floppy?

    - by test1839
    I has a very simple task. I need to block access to removable media (CD, DVD, floppy, USB drives etc.) on a Windows 2008 R2 Terminal Server for users and allow it for admins. I tried to enable the following policy in GPO: User Configuration/Administrative Templates/System/Removable Storage Access All Removable Storage classes: Deny all access = Enabled But it did not work. I tried different physical and virtual 2008 servers with the same result. It works on Windows 7 but not on Windows 2008. Has anyone had success with this parameter on Windows 2008? Thank you

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  • How do I make Home / End keys behave Windows/Linux like in Terminal.app on Mac OS on Mac Pro laptop?

    - by Nick Gorbikoff
    Hello. I was wondering if somebody knows how to use home/end keys behave in a Windows/ Linux fashion. What I mean is that when I press Apple + Left (Home combo on a mac book pro laptop) it should go to the beginning of the line, and Apple + Right to the end of the line. Right now they change focus to the top of the scroll history. Drives me crazy. Home / End keys behave as expected in TextMate and such but not in terminal, which makes me think it's that app specific. I found some page saying that I need to remap key bindings but I can't do that on every mac i touch. So is there another shorcut in Mac I can use or how do I make Home/End keys behave as expected? Thank you

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  • Is it possible to execute keyboard input programmatically in Linux?

    - by Taylor Hawkes
    For example is there a Linux command or way that I could from a program (c++ | python| or other) enter a series of keyboard inputs that are interpreted as though they are keyboard inputs. I have a bad case of Repetitive Stress Injury (RSI) from typing. To ease my pain I developed a voice controlled interface using pocket sphinx and a custom grammar and to run a number of very common commands. ex: "open chrome" , "open vim". Basically what is shown here, but with slightly diff tools: http://bloc.eurion.net/archives/2008/writing-a-command-and-control-application-with-voice-recognition/ I have run into some limitation as I can only execute command line commands given a voice command. Rather than having a "voice command" - "command line command" mapping, I would like to have "voice command" - "keyboard input" mapping. So when my active window is a browser and I type + n, and new tab opens. If I'm in vim and new vim tab opens. Any suggestions, ideas, tools or approaches to this problem would be much appreciated. I understand the answer may not be simple, but would like to develop it none the less.

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  • is it possible to execute keyboard input programmaticly in linux?

    - by Taylor Hawkes
    For example is there a Linux command or way that I could from a program (c++ | python| or other) enter a serious of keyboard inputs that are interpreted as though they are keyboard inputs. I have a bad case of RSI from typing. To ease my pain I developed a voice controlled interface using pocket sphinx and a custom grammar and to run a number of very common commands. ex: "open chrome" , "open vim". basically what is shown here, but with slightly diff tools: http://bloc.eurion.net/archives/2008/writing-a-command-and-control-application-with-voice-recognition/ I have run into some limitation as I can only execute command line commands given a voice command. Rather than having a "voice command" - "command line command" mapping I would like to have "voice command" - "keyboard input" mapping. So when my active window is a browser and i type + n, and new tab opens. If i'm in vim and new vim tab opens. Any suggestions, ideas, tools or approaches to this problem would be much appreciated. I understand the answer may not be simple, but would like to develop it none the less.

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  • How to assign a keyboard shortcut to a specific New Window template in Terminal.app?

    - by Mike
    I have a template set up in Snow Leopard's Terminal.app to create a new window or tab with my preferred emulation settings for a particular host that I use. I'd like to assign a keyboard shortcut to that template so that I can quickly create a new window with those settings. I tried using the Keyboard Shortcuts System Preference pane to do it. I can assign the shortcut key to the MyTemplate submenu, but it doesn't work when I try to use it. I suspect because the MyTemplate is listed in multiple submenus -- one for New Window and one for New Tab. How can I assign a keyboard shortcut to my new fancy template? PS. I do NOT wish to change my default (cmd-N) template.

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  • Terminal command to send data (plain text string) to a port at a remote computer.

    - by Eddy
    I am trying to send data (plain text string) to a port at a remote computer using terminal utility. The string would be used to trigger something on the remote computer running a program that would listen to that specific port. I used netcat command and tried a few combination of the following but can't seem to get the parameter right. Can someone point me out where am I doing wrong? eddy-2:Desktop eddy$ nc IPADDRESS PORT woc.txt eddy-2:Desktop eddy$ nc IPADDRESS PORT < woc.txt P.S: woc.txt contains plain text string of the said command. Edit: I am trying to send a string from OSX to Windows XP where the specific port is open by default.

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  • Reminder: Oracle Linux 5 Exams Soon To Retire

    - by Brandye Barrington
    This is a reminder that Oracle will retire Oracle Linux System Administration (1Z0-403) and Oracle Linux Fundamentals (1Z0-402) on October 31, 2013. We will also re-release exam 1Z0-402 as Oracle Linux Fundamentals (1Z0-409) on November 1, 2013. New Oracle Linux 5 and 6 OCA and OCP certifications are now available. Existing certification holders should note that these retirements suspend the delivery of any further exams, but do not affect your certification. If you currently hold a certification earned by one of these exams, your credential remains fully valid. Retiring Certification Path Oracle Linux Administrator Certified Associate Retiring Exam 1Z0-402 Oracle Linux Fundamentals (this will be re-released as Oracle Linux Fundamentals (1Z0-409) and lead to the  Oracle Linux Certified Implementation Specialist certification.) 1Z0-403 Oracle Linux System Administration These exams will continue to be offered through October 31, 2013. Candidates pursuing these certification paths must successfully complete the required certification exams by this date. Re-takes will not be available after this date. For more information, see Oracle Certification retirements. For more information on the new exams and certifications, see the Oracle Certification Blog.

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  • Architectural approaches to creating a game menu/shell overlay on PC/Linux?

    - by Ghopper21
    I'm am working on a collection of games for a custom digital tabletop installation (similar to Microsoft Surface tables). Each game will be an individual executable that runs full-screen. In addition, there needs to be a menu/shell overlay program running simultaneously. The menu/shell will allow users to pause games, switch to other games, check their game history, etc. Some key requirements of the shell: it intercepts all user input (mainly multitouch) first before passing it on to the currently running game (so that it can, for instance, know to pop-up at a "pause" command); can reveal on arbitrary portions of the screen, with the currently running (but presumably paused) game still showing underneath, ideally with its shape/size being dynamic, to allow for creation of an animated in/out drawer effect over the game. I'm currently looking into different architectural approaches to this problem, including Fraps and DirectX overlays, but I'm sure I'm missing some ways to think about this. What are the main approaches I should be considering? (Note the table is currently being run by Windows PC, but it could potentially be a Linux box instead.)

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  • Linux, GNU GCC, ld, version scripts and the ELF binary format -- How does it work? [closed]

    - by themoondothshine
    I'm trying to learn more about library versioning in Linux and how to put it all to work. Here's the context: I have two versions of a dynamic library which expose the same set of interfaces, say libsome1.so and libsome2.so. An application is linked against libsome1.so. This application uses libdl.so to dynamically load another module, say libmagic.so. Now libmagic.so is linked against libsome2.so. Obviously, without using linker scripts to hide symbols in libmagic.so, at run-time all calls to interfaces in libsome2.so are resolved to libsome1.so. This can be confirmed by checking the value returned by libVersion() against the value of the macro LIB_VERSION. So I try next to compile and link libmagic.so with a linker script which hides all symbols except 3 which are defined in libmagic.so and are exported by it. This works... Or at least libVersion() and LIB_VERSION values match (and it reports version 2 not 1). However, when some data structures are serialized to disk, I noticed some corruption. In the application's directory if I delete libsome1.so and create a soft link in its place to point to libsome2.so, everything works as expected and the same corruption does not happen. I can't help but think that this may be caused due to some conflict in the run-time linker's resolution of symbols. I've tried many things, like trying to link libsome2.so so that all symbols are alised to symbol@@VER_2 (which I am still confused about because the command nm -CD libsome2.so still lists symbols as symbol and not symbol@@VER_2), but nothing seems to work. What am I doing wrong?

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  • What is the @ sign on the end of file permission on terminal?

    - by shannoga
    I have a sound file in my app that the iPhone does not play. After checking other problems I checked the file permission in terminal. What I can see is that the file permission of this file has a- @ at the end of it. I don't know if that is the problem but this is the only difference from the other sound files that plays fine. What is this sign ? Could it cause a problem ? EDIT Thanks this is what I get: com.apple.FinderInfo: 00000000 4D 34 41 20 68 6F 6F 6B 00 00 00 00 00 00 00 00 |M4A hook........| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000020 Thanks Shani

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  • How Can I Speed Up Terminal.app or iTerm on Mac OSX?

    - by pmaiorana
    Every time I launch either iTerm or Terminal after not using it for a few hours, it takes anywhere from 10-20 seconds to return a prompt. The screen is blank, and although I can type I can't actually run any commands. If I quit either application, subsequent launches (if done relatively soon thereafter) are quite fast. The slowness only seems to occur if the app wasn't running for a few hours. I'm running OSX 10.5.7 on a MacBookPro. I have the exact same setup on another computer, with no slow downs. Any ideas how to speed things up again?

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  • Has anyone found a (eg bash) shell terminal for Windows as good as the OS X one?

    - by Anentropic
    I am mostly using 'git-bash' which came with the Windows install of Git vcs. I think it is the same one that comes with Cygwin. It works fine technically but the UI sucks: have to right-click the title bar and go to Properties to change the window width most annoyingly... copy and paste and highlight with the mouse are equally cumbersome In contrast, the Terminal app that comes with OS X manages these with aplomb and makes it so much more comfortable to work with. You can even drag and drop a file on it and it will paste the file path in at your cursor! I have also tried: http://sourceforge.net/projects/win-bash http://www.steve.org.uk/Software/bash/ http://www.hamiltonlabs.com/cshell.htm None of these do copy and paste of text without cumbersome right-clicking. I am specifically looking for a Unix-flavoured shell in Windows so I don't have to use different shells between my home dev (Windows), the live server (Linux) or dev at the office (Mac). Yes I have Googled and haven't found one yet...

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