Daily Archives

Articles indexed Sunday November 11 2012

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• What is the correlation between programming language and experience/skills of their users?

  - by Petr Pudlák

  I'm sure there is such a correlation, because experience and skill leads good programmers to picking languages that are better for them, in which they're more productive, and working in a language forms how programmers think and influences their methods and skills. Is there any research or some statistical data of this phenomenon? Perhaps this is not a purely academic question. For example, if someone is starting a new project, it could be worth considering a language (among other criteria of course) for which there is a higher chance of finding or attracting experienced programmers. Update: Please don't fixate on the last paragraph. It's not my intention to choose a language based on this criterion, and I know there are other far more important ones. My interested is mostly academic. It comes from the (subjective) observation and I wonder if someone has researched it a bit. Also, I'm talking about a correlation, not about a rule. Sure there are both great and terrible programmers in every language. Just that in general it seems to me there is a correlation.

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• Please help me debug this little C program on dynamic two-dimensional array? [migrated]

  - by azhi

  I am a newbie here. I have written a little C program, which is to create a two-dimensional matrix. Here is the code: #include <stdio.h> #include <stdlib.h> int **CreatMatrix(int m,int n){ int **Matrix; int i; Matrix=(int**)malloc(m*sizeof(int*)); for(i=0;i<m;i++){ Matrix[i]=(int*)malloc(n*sizeof(int)); } return Matrix; } int main(){ int m,n; int **A; printf("Please input the size of the Matrix: "); scanf("%d%d",&m,&n); A=CreatMatrix(m,n); printf("Please input the entries of the Matrix, which should be integers!\n"); int i,j; for(i=0;i<m;i++){ for(j=0;j<n;j++){ scanf("%d",&A[i][j]); } } printf("The Matrix that you input is:\n"); for(i=0;i<m;i++){ for(j=0;j<n;j++){ printf("%3d ",A[i][j]); } printf("\n"); } for(i=0;i<m;i++) free(A[i]); free(A); } I have run it, and it works fine. But I am not sure if it is right? Can anyone help me debug it?

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• Should tests be in the same Ruby file or in separated Ruby files?

  - by Junior Mayhé

  While using Selenium and Ruby to do some functional tests, I am worried with the performance. So is it better to add all test methods in the same Ruby file, or I should put each one in separated code files? Below a sample with all tests in the same file: # encoding: utf-8 require "selenium-webdriver" require "test/unit" class Tests < Test::Unit::TestCase def setup @driver = Selenium::WebDriver.for :firefox @base_url = "http://mysite" @driver.manage.timeouts.implicit_wait = 30 @verification_errors = [] @wait = Selenium::WebDriver::Wait.new :timeout => 10 end def teardown @driver.quit assert_equal [], @verification_errors end def element_present?(how, what) @driver.find_element(how, what) true rescue Selenium::WebDriver::Error::NoSuchElementError false end def verify(&blk) yield rescue Test::Unit::AssertionFailedError => ex @verification_errors << ex end def test_1 @driver.get(@base_url + "/") # a huge test here end def test_2 @driver.get(@base_url + "/") # a huge test here end def test_3 @driver.get(@base_url + "/") # a huge test here end def test_4 @driver.get(@base_url + "/") # a huge test here end def test_5 @driver.get(@base_url + "/") # a huge test here end end

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• Brief explanation for executables in a GNU/Clang Toolchain?

  - by ZhangChn

  I roughly understand that cc, ld and other parts are called in a certain sequence according to schemes like Makefiles etc. Some of those commands are used to generate those configs and Makefiles. And some other tools are used to deal with libraries. But what are other parts used for? How are they called in this process? Which tool would use various parser generators? Which part is optional? Why? Is there a brief summary get these explained on how the tools in a GNU or LLVM/Clang toolchain are organised and called in a C/C++ project building? Thanks in advance. EDIT: Here is a list of executables for Clang/LLVM on Mac OS X: ar clang dsymutil gperf libtool nmedit rpcgen unwinddump as clang++ dwarfdump gprof lorder otool segedit vgrind asa cmpdylib dyldinfo indent m4 pagestuff size what bison codesign_allocate flex install_name_tool mig ranlib strip yacc c++ ctags flex++ ld mkdep rebase unifdef cc ctf_insert gm4 lex nm redo_prebinding unifdefall

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• cant get ubuntu to work with windows 8

  - by John Mark High

  ive been trying to dual boot Ubuntu with windows 8 but so far I haven't been able too. the laptop im using is a HP Pavilion g6-2240sa pre-installed with windows 8. ive made the bootbale USB with Ubuntu 12.10, it installs but when I restart the computer boot straight into windows, no grub boot options. I can get into Ubuntu once by doing an advanced restart and booting from the Ubuntu partition. I can use Ubuntu fine but once I restart or shutdown, I do the advanced restart again and the Ubuntu partition is now gone and I have to reinstall. i used this tutorial to install Ubuntu, http://www.youtube.com/watch?v=wNCSbTyUzoM After i have to reinstall and still no grub boot menu, i used the boot repair to re-install it. once i rebooted the computer it went straight to windows again and the Ubuntu partition was gone. can i dual boot windows 8 and unbuntu 12.10 with the grub so i can pick what OS to boot into when the computer is starting, and without the partition going AWOL???? Thanks in advance

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• Prevent Apache restarting automatically after upgrading packages

  - by HorusKol

  Following on from an earlier question: Is there a way to download security updates and notify admin without installing the update? A large number of packages interact with Apache (especially PHP) such that security updates to those packages can cause the server to attempt to restart the service. While my earlier question was answered, I'm now thinking that I need a different solution. So - is there are way to allow security updates to be applied using apt, have an email sent to an administrator, and, most importantly, prevent services from being restarted at the end of the installation/update process? The administrator will then be able to log in and restart the service manually.

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• ethernet problems in ubuntu 12.04

  - by h4x0rj3ff

  so today i popped out my hdd with ubuntu on it and put in a fresh hdd and installed win8 (wanted to try it). i got everything installed, upp and running and decided to go back to ubuntu (for obvious reasons lol) but when i boot back into ubuntu my internet connection will not connect. i booted into a live cd of ubuntu and it still would not work. i thought i blew up my onboard port so i booted back into win8 and the internet worked without flaw. so i booted back into my ubuntu install and i have a usb to ethernet adapter that im using but i still cant get my onboard to connect. any ideas?

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• Reason why Windows can't be installed on Ubuntu , Any Help though?

  - by Terzuz

  Well I got my Windows Vista .iso file , I put it on my USB Drive , Extracted , Then I restarted and went to "Boot Device Options" Clicked "Generic USB" (What I labeled when I formatted) Then it stood on a black screen for 15 minutes , Then just went to Ubuntu , Now I found out exactly what happened Why Windows WONT work on Ubuntu is a simple reason Not if you save it in NFTS Format or MSDOS (Both Windows Formats) , Not if you use anything special , This even applies to the Ubuntu downloader , One specific reason that I just noticed , Since WINE (Windows Application Loader) can't run while you click the USB , You can't open the Setup.exe file needed to install the Operating System , That means you can not install it at all if it is a .exe installer file , Then what can we do? Only other way is to make a partition with GParted , Put a partition , then install WINE , Then run your Windows Setup.exe file , Then Wine will load it up! Why not to open Setup.exe before you make a partition - Simple , It WONT WORK! I have tried , It says you need __ Amount of space and can be put on any partition , Yeah , Any partition NOT BEING USED Here is where I need your help! - I want to make a partition but they all show as locked when I open GParted , So How am I supposed to open them up? Get a hammer and tell HP my laptop didn't want to open its partitions? Nope , I need some help on how to unlock the partitions or what to do , Thank you in advance PS- If I could , I would put a bounty to this but I do not have enough reputation!

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• Graphics card fan is loud (additional graphics card drivers cause problems)

  - by tk4muffin

  Okay this explanation is a bit longer ... but I start at the beginning: I've been using Windows 7 for a very long time, shortly after the release of v12.10 I installed Ubuntu via Windows installer. Everything worked fine but the fan of the graphics card. After a bit of research I found out, that I just had to select a different driver (nvidia-current (proprietary, tested) worked pretty well). This also fixed some graphical bugs when I just logged into my account. Due to my university I got a MSDNAA-Account (allows me to download every Windows OS for free). I downloaded and installed Windows 8. After configuration I installed ubuntu via the Windows installer once again and the first couple launches of ubuntu went well. Suddenly ubuntu didn't launched anymore...caused by some hard-disk errors and had no clue what to do. So I kept working on Windows 8 - unfortunately. After playing around with the new Windows, I put my PC to sleep-mode. I couldn't wake my PC up and it wasn't responding to anything (neither mouse-movement, -clicks or keyboard strokes, nor the power-button and the reset-button worked), so I pulled the plug. Turns out, this was a huge mistake. Somehow the BIOS broke and after restarting a couple of times, the BIOS repaired itself. Neither Windows 8, nor ubuntu where bootable. Now I had to install ubuntu several times, because after rebooting unity was hidden and I didn't know what the problem was and how to fix it. I finally realized that this problem was caused by the graphics card driver, which I've changed to the nvidia-current (This dirver worked fine before my PC "crashed"). So I installed Windows 8 again and after a bit of usage I installed ubuntu once again (via DVD). The booting of ubuntu and windows works fine - so far. But I'm still not able to change the graphics card driver without unity hiding away after restarting the OS. The noisy fan is really disturbing my work... PC Specs: Processor: Intel Core 2 Duo COU E8400 @ 3GHz x2 Memory: 7.8 GB OS type: 64-bit Graphics Card: GeForce 9600 GT Motherboard: Asus P5Q I hope the information given are enough.

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• Evolution cannot open address book? It also can no longer sync with google contacts. 12.10

  - by chad

  When I press the contacts button it gives me the following error message Unable to open address book This address book cannot be opened. This either means that an incorrect URI was entered, or the server is unreachable. Detailed error message: No such source for UID '1352672030.12033.3@chad-Lenovo-G570' Also when I try to create a new google address book it will not import contacts. Please do not tell me to use thunderbird Please help! Thanks

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• Change resolution in Waking Mars

  - by Wes

  I purchased and installed the humble bundle game "Waking Mars" via the Ubuntu Software Center and it works really well except for some issues with changing settings, namely with the resolution. The in-game settings for changing resolution and entering/exiting fullscreen were easy enough to find and toggle, and when you do it asks to restart the application. When you restart it, all other settings you updated are reflected except for the changes to the resolution. (I'm trying to get it to play in windowed mode that fits onto one monitor, but it will only default to windowed mode with the full dual monitor resolution). I noticed that it writes these values to ~/.local/share/WakingMars/UserSettings.ini. When I change the resolution, it is properly written to in this settings file...but it never is reflected when you restart the application. Any ideas what's wrong?

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• ubuntu 12.04 does not detect already installed windows 7

  - by arvind

  sir i have alreary installed windows 7 ultimate and when i tried to install ubuntu 12.04 it's installer didn't detect windows even i have only two primary and two logical partition on windows when i goes through try ubuntu and use command " os-prober" it shows output like as " unshare failed: Operation not permitted ERROR: you must be root ERROR: you must be root ERROR: you must be root ERROR: you must be root ERROR: you must be root ERROR: you must be root mkdir: cannot create directory /var/lib/os-prober/mount': Permission denied mkdir: cannot create directory/var/lib/os-prober/mount': Permission denied mkdir: cannot create directory /var/lib/os-prober/mount': Permission denied mkdir: cannot create directory/var/lib/os-prober/mount': Permission denied mkdir: cannot create directory `/var/lib/os-prober/mount': Permission denied" so plzzzz help me what should i do ???

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• 3.5.0-18 kernel update broke BCM43228

  - by ignition

  After updating the kernel to 3.5.0-18 the Broadcom BCM43228 wireless card of my Acer Aspire One 756 has stopped working properly. The card often refuses to connect to my AP, and if it connects it behaves very unstable. I have already reinstalled the drivers, as recommended by googling around. As far as I can tell the only driver that supports my card is the bcmwl package. I found one solution saying I should install broadcom-sta using module assistant, however I could not get this to install and apparently broadcom-sta and bcmwl are effectively the same driver? Is anyone experiencing similar issues? Is it possible to just downgrade to the previous kernel version?

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• How do i delete these files?

  - by user107277

  I ran this command sudo find / -type d -name '*Trash*' | sudo xargs du -h | sort This was the output: 100M /root/.local/share/Trash/files/recup_dir.2.30 100M /root/.local/share/Trash/files/recup_dir.2.72 100M /root/.local/share/Trash/files/recup_dir.32 101M /root/.local/share/Trash/files/recup_dir.2.27 101M /root/.local/share/Trash/files/recup_dir.29 103M /root/.local/share/Trash/files/recup_dir.2.7 103M /root/.local/share/Trash/files/recup_dir.9 103M /root/.local/share/Trash/files/recup_dir.93 106M /root/.local/share/Trash/files/recup_dir.187 106M /root/.local/share/Trash/files/recup_dir.71 107M /root/.local/share/Trash/files/recup_dir.131 107M /root/.local/share/Trash/files/recup_dir.136 107M /root/.local/share/Trash/files/recup_dir.2.46 107M /root/.local/share/Trash/files/recup_dir.51 108M /root/.local/share/Trash/files/recup_dir.106 108M /root/.local/share/Trash/files/recup_dir.2.78 108M /root/.local/share/Trash/files/recup_dir.52 109M /root/.local/share/Trash/files/recup_dir.2.32 109M /root/.local/share/Trash/files/recup_dir.34 110M /root/.local/share/Trash/files/recup_dir.2.28 110M /root/.local/share/Trash/files/recup_dir.2.53 110M /root/.local/share/Trash/files/recup_dir.30 110M /root/.local/share/Trash/files/recup_dir.55 110M /root/.local/share/Trash/files/recup_dir.89 112M /root/.local/share/Trash/files/recup_dir.2.31 112M /root/.local/share/Trash/files/recup_dir.33 114M /root/.local/share/Trash/files/recup_dir.2.29 114M /root/.local/share/Trash/files/recup_dir.2.74 114M /root/.local/share/Trash/files/recup_dir.31 115M /root/.local/share/Trash/files/recup_dir.125 117M /root/.local/share/Trash/files/recup_dir.83 118M /root/.local/share/Trash/files/recup_dir.105 118M /root/.local/share/Trash/files/recup_dir.2.70 119M /root/.local/share/Trash/files/recup_dir.133 1.1G /root/.local/share/Trash/files/recup_dir.148 11M /root/.local/share/Trash/files/recup_dir.179 1.1M /root/.local/share/Trash/info 122M /root/.local/share/Trash/files/recup_dir.80 124M /root/.local/share/Trash/files/recup_dir.137 125G /root/.local/share/Trash 125G /root/.local/share/Trash/files 125M /root/.local/share/Trash/files/recup_dir.2.49 129M /root/.local/share/Trash/files/recup_dir.153 1.2G /root/.local/share/Trash/files/recup_dir.165 1.2G /root/.local/share/Trash/files/recup_dir.166 12K /media/A80E1DE60E1DAE76/.Trash-1000/files 12M /root/.local/share/Trash/files/recup_dir.178 12M /root/.local/share/Trash/files/recup_dir.180 12M /root/.local/share/Trash/files/recup_dir.181 130M /root/.local/share/Trash/files/recup_dir.85 137M /root/.local/share/Trash/files/recup_dir.2.5 137M /root/.local/share/Trash/files/recup_dir.7 137M /root/.local/share/Trash/files/recup_dir.76 13M /root/.local/share/Trash/files/recup_dir.143 13M /root/.local/share/Trash/files/recup_dir.18 13M /root/.local/share/Trash/files/recup_dir.182 13M /root/.local/share/Trash/files/recup_dir.2.16 13M /root/.local/share/Trash/files/recup_dir.2.2 13M /root/.local/share/Trash/files/recup_dir.4 140M /root/.local/share/Trash/files/recup_dir.2.77 145M /root/.local/share/Trash/files/recup_dir.2.63 147M /root/.local/share/Trash/files/recup_dir.2.43 147M /root/.local/share/Trash/files/recup_dir.45 148M /root/.local/share/Trash/files/recup_dir.84 149M /root/.local/share/Trash/files/recup_dir.160 149M /root/.local/share/Trash/files/recup_dir.2.79 1.4G /root/.local/share/Trash/files/recup_dir.191 150M /root/.local/share/Trash/files/recup_dir.2.26 150M /root/.local/share/Trash/files/recup_dir.28 153M /root/.local/share/Trash/files/recup_dir.64 153M /root/.local/share/Trash/files/recup_dir.78 154M /root/.local/share/Trash/files/recup_dir.107 155M /root/.local/share/Trash/files/recup_dir.2.80 155M /root/.local/share/Trash/files/recup_dir.79 15M /root/.local/share/Trash/files/recup_dir.151 162M /root/.local/share/Trash/files/recup_dir.65 163M /root/.local/share/Trash/files/recup_dir.82 164M /root/.local/share/Trash/files/recup_dir.104 165M /root/.local/share/Trash/files/recup_dir.2.39 165M /root/.local/share/Trash/files/recup_dir.41 168M /root/.local/share/Trash/files/recup_dir.2.62 16M /root/.local/share/Trash/files/recup_dir.171 170M /root/.local/share/Trash/files/recup_dir.135 170M /root/.local/share/Trash/files/recup_dir.159 171M /root/.local/share/Trash/files/recup_dir.91 172M /root/.local/share/Trash/files/recup_dir.2.41 172M /root/.local/share/Trash/files/recup_dir.43 175M /root/.local/share/Trash/files/recup_dir.2.33 175M /root/.local/share/Trash/files/recup_dir.35 176M /root/.local/share/Trash/files/recup_dir.2.76 179M /root/.local/share/Trash/files/recup_dir.2.38 179M /root/.local/share/Trash/files/recup_dir.40 179M /root/.local/share/Trash/files/recup_dir.61 1.7G /root/.local/share/Trash/files/recup_dir.167 17M /root/.local/share/Trash/files/recup_dir.172 180M /root/.local/share/Trash/files/recup_dir.186 181M /root/.local/share/Trash/files/recup_dir.2.71 182M /root/.local/share/Trash/files/recup_dir.158 183M /root/.local/share/Trash/files/recup_dir.2.59 185M /root/.local/share/Trash/files/recup_dir.123 189M /root/.local/share/Trash/files/recup_dir.92 18M /root/.local/share/Trash/files/recup_dir.142 18M /root/.local/share/Trash/files/recup_dir.149 18M /root/.local/share/Trash/files/recup_dir.150 18M /root/.local/share/Trash/files/recup_dir.152 18M /root/.local/share/Trash/files/recup_dir.173 18M /root/.local/share/Trash/files/recup_dir.177 191M /root/.local/share/Trash/files/recup_dir.147 193M /root/.local/share/Trash/files/recup_dir.102 195M /root/.local/share/Trash/files/recup_dir.73 196M /root/.local/share/Trash/files/recup_dir.94 198M /root/.local/share/Trash/files/recup_dir.2.58 19M /root/.local/share/Trash/files/recup_dir.175 19M /root/.local/share/Trash/files/recup_dir.176 205M /root/.local/share/Trash/files/recup_dir.108 206M /root/.local/share/Trash/files/recup_dir.56 206M /root/.local/share/Trash/files/recup_dir.60 207M /root/.local/share/Trash/files/recup_dir.2.55 209M /root/.local/share/Trash/files/recup_dir.90 2.0G /root/.local/share/Trash/files/recup_dir.190 20K /media/A80E1DE60E1DAE76/.Trash-1000/info 20M /root/.local/share/Trash/files/recup_dir.17 20M /root/.local/share/Trash/files/recup_dir.2.15 210M /root/.local/share/Trash/files/recup_dir.121 211M /root/.local/share/Trash/files/recup_dir.134 212M /root/.local/share/Trash/files/recup_dir.57 21M /root/.local/share/Trash/files/recup_dir.174 223M /root/.local/share/Trash/files/recup_dir.88 225M /root/.local/share/Trash/files/recup_dir.118 230M /root/.local/share/Trash/files/recup_dir.87 232M /root/.local/share/Trash/files/recup_dir.66 235M /root/.local/share/Trash/files/recup_dir.139 236M /root/.local/share/Trash/files/recup_dir.97 238M /root/.local/share/Trash/files/recup_dir.2.54 240M /root/.local/share/Trash/files/recup_dir.163 241M /root/.local/share/Trash/files/recup_dir.126 242M /root/.local/share/Trash/files/recup_dir.2.81 243M /root/.local/share/Trash/files/recup_dir.156 244M /root/.local/share/Trash/files/recup_dir.2.37 244M /root/.local/share/Trash/files/recup_dir.39 248M /root/.local/share/Trash/files/recup_dir.110 249M /root/.local/share/Trash/files/recup_dir.75 256M /root/.local/share/Trash/files/recup_dir.2.73 257M /root/.local/share/Trash/files/recup_dir.2.64 25M /root/.local/share/Trash/files/recup_dir.10 25M /root/.local/share/Trash/files/recup_dir.2.8 262M /root/.local/share/Trash/files/recup_dir.86 266M /root/.local/share/Trash/files/recup_dir.144 27M /root/.local/share/Trash/files/recup_dir.99 282M /root/.local/share/Trash/files/recup_dir.127 29M /root/.local/share/Trash/files/recup_dir.183 29M /root/.local/share/Trash/files/recup_dir.22 29M /root/.local/share/Trash/files/recup_dir.2.20 316M /root/.local/share/Trash/files/recup_dir.124 31M /root/.local/share/Trash/files/recup_dir.2.21 31M /root/.local/share/Trash/files/recup_dir.23 320M /root/.local/share/Trash/files/recup_dir.168 32M /root/.local/share/Trash/files/recup_dir.12 32M /root/.local/share/Trash/files/recup_dir.2.10 334M /root/.local/share/Trash/files/recup_dir.140 338M /root/.local/share/Trash/files/recup_dir.69 33M /root/.local/share/Trash/files/recup_dir.21 33M /root/.local/share/Trash/files/recup_dir.2.19 340M /root/.local/share/Trash/files/recup_dir.2.57 341M /root/.local/share/Trash/files/recup_dir.185 342M /root/.local/share/Trash/files/recup_dir.169 343M /root/.local/share/Trash/files/recup_dir.129 346M /root/.local/share/Trash/files/recup_dir.111 348M /root/.local/share/Trash/files/recup_dir.103 351M /root/.local/share/Trash/files/recup_dir.2.34 351M /root/.local/share/Trash/files/recup_dir.36 352M /root/.local/share/Trash/files/recup_dir.155 358M /root/.local/share/Trash/files/recup_dir.59 36G /root/.local/share/Trash/files/recup_dir.1 36G /root/.local/share/Trash/files/recup_dir.2 36M /root/.local/share/Trash/files/recup_dir.120 36M /root/.local/share/Trash/files/recup_dir.2.24 36M /root/.local/share/Trash/files/recup_dir.2.51 36M /root/.local/share/Trash/files/recup_dir.26 37M /root/.local/share/Trash/files/recup_dir.112 390M /root/.local/share/Trash/files/recup_dir.162 398M /root/.local/share/Trash/files/recup_dir.2.67 39M /root/.local/share/Trash/files/recup_dir.145 401M /root/.local/share/Trash/files/recup_dir.2.52 402M /root/.local/share/Trash/files/recup_dir.54 408M /root/.local/share/Trash/files/recup_dir.2.40 408M /root/.local/share/Trash/files/recup_dir.42 4.0K /home/daniel/.local/share/Trash 40K /media/A80E1DE60E1DAE76/.Trash-1000 41M /root/.local/share/Trash/files/recup_dir.13 41M /root/.local/share/Trash/files/recup_dir.2.11 428M /root/.local/share/Trash/files/recup_dir.2.61 434M /root/.local/share/Trash/files/recup_dir.2.36 434M /root/.local/share/Trash/files/recup_dir.38 43M /root/.local/share/Trash/files/recup_dir.19 43M /root/.local/share/Trash/files/recup_dir.2.17 43M /root/.local/share/Trash/files/recup_dir.53 440M /root/.local/share/Trash/files/recup_dir.157 448M /root/.local/share/Trash/files/recup_dir.2.35 448M /root/.local/share/Trash/files/recup_dir.37 44M /root/.local/share/Trash/files/recup_dir.20 44M /root/.local/share/Trash/files/recup_dir.2.18 454M /root/.local/share/Trash/files/recup_dir.116 47M /root/.local/share/Trash/files/recup_dir.11 47M /root/.local/share/Trash/files/recup_dir.2.9 48M /root/.local/share/Trash/files/recup_dir.2.48 495M /root/.local/share/Trash/files/recup_dir.192 49M /root/.local/share/Trash/files/recup_dir.114 49M /root/.local/share/Trash/files/recup_dir.50 52M /root/.local/share/Trash/files/recup_dir.3 538M /root/.local/share/Trash/files/recup_dir.2.68 53M /root/.local/share/Trash/files/recup_dir.95 54M /root/.local/share/Trash/files/recup_dir.98 551M /root/.local/share/Trash/files/recup_dir.63 57M /root/.local/share/Trash/files/recup_dir.101 5.7M /root/.local/share/Trash/files/recup_dir.119 57M /root/.local/share/Trash/files/recup_dir.14 57M /root/.local/share/Trash/files/recup_dir.2.12 581M 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/root/.local/share/Trash/files/recup_dir.58 815M /root/.local/share/Trash/files/recup_dir.2.66 818M /root/.local/share/Trash/files/recup_dir.2.56 82M /root/.local/share/Trash/files/recup_dir.2.44 82M /root/.local/share/Trash/files/recup_dir.46 835M /root/.local/share/Trash/files/recup_dir.68 84M /root/.local/share/Trash/files/recup_dir.189 860M /root/.local/share/Trash/files/recup_dir.161 86M /root/.local/share/Trash/files/recup_dir.117 86M /root/.local/share/Trash/files/recup_dir.2.69 86M /root/.local/share/Trash/files/recup_dir.2.75 90M /root/.local/share/Trash/files/recup_dir.74 924M /root/.local/share/Trash/files/recup_dir.184 94M /root/.local/share/Trash/files/recup_dir.81 95M /root/.local/share/Trash/files/recup_dir.100 96M /root/.local/share/Trash/files/recup_dir.2.6 96M /root/.local/share/Trash/files/recup_dir.2.65 96M /root/.local/share/Trash/files/recup_dir.8 97M /root/.local/share/Trash/files/recup_dir.2.50 97M /root/.local/share/Trash/files/recup_dir.67 97M /root/.local/share/Trash/files/recup_dir.72 98M /root/.local/share/Trash/files/recup_dir.96 99M /root/.local/share/Trash/files/recup_dir.48 How do I delete these files?

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• How do I create a .deb file?

  - by JamesTheAwesomeDude

  Yes, I know that this question has been asked many times before, but none of the answers really helped. I'd like to package the Minecraft launcher (which has no proprietary code, AFAIK,) into a .deb file so that I can put it on a flash drive and share it with my friends. I have managed to install Minecraft it manually (put some files into /opt/minecraft, download an icon, and create a .desktop file in /usr/share/applications,) and I have made a shell script that completely automates the process, but it relies on wget to retrieve a few files, including the .desktop file. (It isn't a self-extracting archive, after all.) I'd like to be able to do this offline, as a lot of my friends have slow or no internet. (One of their internet lines was buried so shallowly that it actually got knocked out by the lawnmower.) I won't be loading it into a PPA or anything like that; I just want it to be a "formal" package that can be easily installed and uninstalled. (One thing that I would like is for sudo apt-get purge minecraft to also remove the .minecraft folder. It would also be nice to define the dependedcies as being able to accept OpenJDK or Sun's JVM.) Oh, just so you know, the Minecraft launcher is a .jar file, but I can very, very easily launch it via shell scripts. The exact command is right on the download page.

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• Installing Ubuntu with Windows installer on Windows 8 machine

  - by tpmeera

  I have a Windows 8 Ultrabook. I downloaded Ubuntu (release 12.04) and installed using the Windows installer (Wubi). On rebooting at the end of the installation, I get the Windows boot screen asking if I want to boot into Windows 8 or Ubuntu. I select Ubuntu, and I get an error message that says Ubuntu is missing a boot file or has errors. Please let me know how to fix, or if my procedure is incorrect.

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• How do I add and/or keep subtitles when converting video?

  - by JoeSteiger

  I have a mkv video I want to convert to mp4, but every which way I try and convert it (Handbrake, WinFF, ffmpeg, mencoder,...I lose the video's subtitles. How can I convert the video,keeping the subtitles, or add a subtitles.srt? I also would like 2 pass encoding with a video bitrate of 4054 and audio bitrate of 160. Thanks. I was asked for the ffmpeg -i: joe@joe-Leopard-Extreme:/media/Elements/Home Folder/Videos$ ffmpeg -i iron.mkv ffmpeg version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers built on Jun 12 2012 16:52:09 with gcc 4.6.3 *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. [matroska,webm @ 0x1a319a0] Estimating duration from bitrate, this may be inaccurate Input #0, matroska,webm, from 'iron.mkv': Metadata: title : Iron Duration: 02:06:01.67, start: 0.000000, bitrate: 1280 kb/s Chapter #0.0: start 0.000000, end 546.170622 Metadata: title : Chapter 00 Chapter #0.1: start 546.170622, end 1080.579489 Metadata: title : Chapter 01 Chapter #0.2: start 1080.579489, end 1609.941667 Metadata: title : Chapter 02 Chapter #0.3: start 1609.941667, end 2101.849733 Metadata: title : Chapter 03 Chapter #0.4: start 2101.849733, end 2595.259333 Metadata: title : Chapter 04 Chapter #0.5: start 2595.259333, end 3158.488667 Metadata: title : Chapter 05 Chapter #0.6: start 3158.488667, end 3564.644400 Metadata: title : Chapter 06 Chapter #0.7: start 3564.644400, end 4052.423356 Metadata: title : Chapter 07 Chapter #0.8: start 4052.423356, end 4304.300000 Metadata: title : Chapter 08 Chapter #0.9: start 4304.300000, end 4711.206489 Metadata: title : Chapter 09 Chapter #0.10: start 4711.206489, end 5080.575489 Metadata: title : Chapter 10 Chapter #0.11: start 5080.575489, end 5700.111067 Metadata: title : Chapter 11 Chapter #0.12: start 5700.111067, end 6269.346400 Metadata: title : Chapter 12 Chapter #0.13: start 6269.346400, end 6811.471333 Metadata: title : Chapter 13 Chapter #0.14: start 6811.471333, end 7561.679000 Metadata: title : Chapter 14 Stream #0.0(eng): Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, s16, 640 kb/s (default) Metadata: title : 3/2+1 Stream #0.2(ita): Audio: ac3, 48000 Hz, 5.1, s16, 640 kb/s Metadata: title : 3/2+1 Stream #0.3(eng): Subtitle: pgssub (default) Stream #0.4(eng): Subtitle: pgssub Stream #0.5(eng): Subtitle: pgssub Stream #0.6(eng): Subtitle: pgssub At least one output file must be specified joe@joe-Leopard-Extreme:/media/Elements/Home Folder/Videos

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• Dependency error while installing WINE

  - by pgrytdal

  Every time I try to install "WINE" VIA the Software Center on Ubuntu 12.10, I get this error: The following packages have unmet dependencies: wine1.4: PreDepends: dpkg (>= 1.15.7.2~) but 1.16.7ubuntu6 is to be installed Depends: libc6 (>= 2.14) but 2.15-0ubuntu20 is to be installed Depends: wine1.4-amd64 (= 1.4.1-0ubuntu1) but 1.4.1-0ubuntu1 is to be installed Depends: wine1.4-i386 (= 1.4.1-0ubuntu1) but it is not going to be installed When I try installing it VIA the terminal, this is what I get: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine1.4 : Depends: wine1.4-i386 (= 1.4.1-0ubuntu1) but it is not installable Recommends: gnome-exe-thumbnailer but it is not going to be installed or kde-runtime but it is not going to be installed Recommends: ttf-droid Recommends: ttf-mscorefonts-installer but it is not going to be installed Recommends: ttf-umefont but it is not going to be installed Recommends: ttf-unfonts-core but it is not going to be installed Recommends: winbind but it is not going to be installed Recommends: winetricks but it is not going to be installed E: Unable to correct problems, you have held broken packages. how do I fix this?

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• Ubuntu 12.04 Touchscreen Calibration

  - by Lee

  I have a machine with Ubuntu 12.04 installed, with dual monitor, via VGA and DVI Interface. The monitor is one touch screen and the other one is regular LCD Monitor. The touch screen is made in China with some unknown brand, and I am using eGalax Driver. The touch screen is now detected and works, but i need to do some calibration since it does not correctly perform click on touch. The problem is, when I’m using xinput_calibrator, it shows 4 crosses to be clicked on, because I’m using dual monitor, the crosses is now show 2 on the touch screen (touchable) and the others on the other monitor which is regular non-touch monitor. Please help, thank you.

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• How do I access my remote Ubuntu server via X-windows from my Mac?

  - by Magooda

  I have an Ubuntu server (12.04 LTS) running remotely on a cloud hosting service. I have installed ubuntu-desktop via apt-get: $ sudo apt-get install ubuntu-desktop It appears to have installed no problem. I have confirmed that /etc/ssh/ssh_config on the server contains the lines ForwardAgent yes ForwardX11 yes ForwardX11Trusted yes and that /etc/ssh/sshd_config on the server contains the line: X11Forwarding yes I then rebooted the server. It came back up no problem. Now, starting X11.app on my Mac I am presented with an Xterm. I connect to my server from this terminal using: $ ssh -X <myhost> and I connect to the server, no problem. At this point I don't know what to do. I have tried $ sudo startx but I get a "no screens found" error. I don't have screens because its a headless cloud server, but I just want to acces it from my Mac through X. What now?

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• Failed install 12.04 on Intel Hardware Raid with Large Partition (> 2TB)

  - by Michael Wiles

  I have Intel Hardware Raid on the motherboard. I have 10 2 TB HDD that I've configured as RAID 1+0 to be one big 8 TB HDD. Now I'm trying to install ubuntu 12.04 on it. After installing with default desktop installation disk I get a blank screen with a cursor flashing. If I try the alternate guided partitioning option I get error: out of disk. and the grub prompt. If I boot with the rescue disk or such like I can drop into a shell and view the disk. Everything also installs without an issue. Don't know what to do...

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• Fix hibernate on Thinkpad X60 with 12.04 Precise Pangolin

  - by ddaa

  I own a ThinkPad X60, hibernate used to work on 10.04 Lucid Lynx, but no longer works correctly on 12.04. I am aware of how to enable hibernate in Power Manager. The problem here is, in the default configuration, pm-hibernate works, but the system fails to resume correctly. There is no video glitch, black screen or other. The resume process just freezes on the Ubuntu splash boot after a few seconds of disk activity. Is there a way to fix the system configuration so hibernates works again?

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• 2D Tile Game - Smooth Biome Terrain Transitions

  - by Cyral

  While working on my 2D tile based game, I encountered a problem. I use Perlin Noise to generate the terrain. Some biomes (Desert, Forest, etc) have different flatness values depending on terrain, which causes the end/start of a new biome to have a big cliff because the terrain is different. When 2 biomes have the same flatness, they are fine, but if they are different, this can happen. Is there any way to keep this from happening? Example (In programmer art)

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• Is it a good idea to use a formula to balance a game's complexity, in order to keep players in constant flow?

  - by user1107412

  I read a lot about Flow theory and its applications to video games, and I got an idea sticking in my mind. If a number of weight values are applied to different parameters of a certain game level (i.e. the size of the level, the number of enemies, their overal strength, the variance in their behavior, etc), then it should be technically possible to find an overal score mechanism for each level in the game. If a constant ratio of complexity increase were empirically defined, for instance 1,3333, or say, the Golden Ratio, would it be a good idea to arrange the levels in such an order that the increase of overal complexity tends to increase that much? Has somebody tried it?

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• Which purpose do armor points serve?

  - by Bane

  I have seen a mechanic which I call "armor points" in many games: Quake, Counter Strike, etc. Generally, while the player has these armor points, he takes less damage. However, they act in a similar fashion that health points do: you lose them by taking said damage. Why would you design such a feature? Is this just health 2.0, or am I missing something? To me, armor only makes sense in, for example, RPG games, where it is a constant that determines your resistance. But I don't see why would it need to be reduceable during combat.

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