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• install software package-centre app [duplicate]

  - by user287591

  This question already has an answer here: What does Package <package> has no installation candidate mean? 2 answers I am trying to install the software-centre package on Terminal.. I have entered these commands: sudo apt-get install software-center* I get this: The following package was automatically installed and is no longer required thuderbird-global menu use 'apt-get autoremove' to remove them. another 'software-center' has no installation candidate any ideas?

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• How to get lookahead symbol when constructing LR(1) NFA for parser?

  - by greenoldman

  I am reading an explanation (awesome "Parsing Techniques" by D.Grune and C.J.H.Jacobs; p.292 in the 2nd edition) about how to construct an LR(1) parser, and I am at the stage of building the initial NFA. What I don't understand is how to get/compute a lookahead symbol. Here is the example from the book, the grammar: S -> E E -> E - T E -> T T -> ( E ) T -> n n is terminal. The "weird" transitions for me are is the sequence: 1) S -> . E eof 2) E -> . E - T eof 3) E -> . E - T - 4) E -> E . - T - 5) E -> E - . T - (Note: In the above table, the state numbers are in front and the lookahead symbol is at the end.) What puzzles me is that transition from (4) to (5) means reading - token, right? So how is it that - is still a lookahead symbol and even more important why is it that eof is no longer a lookahead symbol? After all in an input such as n - n eof there is only one - symbol. My naive thinking tells me (5) should be written as: 5) E -> E - . T - eof And another thing -- n is terminal. Why it is not used at all as a lookahead symbol? I mean -- we expect to see - or (, it is ok, but lack of n means we are sure it won't appear in input? Update: after more reading I am only more confused ;-) I.e. what is really a lookahead? Because I see such state as (p.292, 2nd column, 2nd row): E -> E . - T eof Lookahead says eof but the incoming input says -. Isn't it a contradiction? And it is not only in this book.

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• Software center freezing on start up

  - by user170522

  I already did the apt-get purge, install and update thing but it still freezes when trying to start. This is what I get trying to start in terminal: cliff@cliff-Aspire-X1301:~$ software-center 2013-06-26 17:00:29,092 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2013-06-26 17:00:29,097 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True 2013-06-26 17:00:29,501 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file 2013-06-26 17:00:29,653 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None. Killed

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• Can't connect to or search Wi-Fi

  - by Mark

  I just installed the latest version of Ubuntu; I think it was 13 or something. Anyway, I got it running, and now I've been trying to connect to my Wi-Fi AP. No matter where I go I don't see an option for Wi-Fi. I looked on the computer and found some commands to use in a terminal to run a scan for Wi-Fi networks, but all of them returned the error: interface doesn't support scanning What are step-by-step directions to make this work?

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• gedit-developer-plugins on Ubuntu 13.10 Saucy Salamander

  - by Francisco Costa

  I've installed gedit-developer-plugins on a fresh Ubuntu 13.10 Saucy Salamander I've lauched gedit (from the terminal) but when I turn a GDP plugin on (in this case GDP Find) I get the following error: (gedit:3640): libpeas-WARNING **: Could not find loader 'python' for plugin 'gdpfind' The same error only shows while turning on GDP plugins, the others work well. Any solution to make this plugins work again?

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• creating a bootable USB stick on OS X

  - by Rob

  I'm trying to create a bootable USB stick on OS X using http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx When this finishes, I get a message in terminal saying "695+1 records in 695+1 records out 729067520 bytes transferred in 264.563662 secs (2755736 bytes/sec)" But a message pops up saying "The disk you inserted was not readable by this computer" Options are Initialize, Ignore or Eject. What am I doing wrong or omitting. (oh - complete novice)

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• How to fix "ndiswrapper not found"?

  - by Tom

  I've been using ndiswrapper to make work some wireless cards using its Windows drivers, because they are not yet supported by free Linux drivers. Until Ubuntu 12.04. Now, I can install Windows Wireless Network Drivers (ndisgtk) from Ubuntu Software Center but when I try to load the driver, I get an error message saying FATAL: Module ndiswrapper not found. I get the same error if I type on a terminal sudo modprobe ndiswrapper. How can I workaround this bug until it's fixed?

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• Can not add custom keyboard shortcut

  - by krasilich

  I'm trying to assign custom shortcut to lunch my own script (I don't need it in terminal window, just lunch it) So, I went to Settings - Keyboard - Shortcuts - Custom Shortcuts press the button with "+" and enter the name of shortcut and the command itself. But then I cannot bind keys to that shortcut. I select new row and press needed keys (Shift + F3) and nothing happens. I can change the keys for system shortcuts, but do not have any luck with my own. Any ideas?

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• File Permissions

  - by Simon Bateman

  Some years/versions ago I found a script that took the Directory group/permissions of the current folder for NEW files Sub-Folders Currently when I import Photographs into 12.04 using Shotwell, I have to use terminal to issue: chgrp photography *.JPG. This enables other ubuntu members of 'photography' group to add these files to their version of Shotwell. I find modifying the Folder Properties/Permissions will NOT set the Group on 'Apply Permissions to Enclosed Files'

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• Can I use other ways than Ubuntu Software Center to open `apt` links?

  - by cipricus

  Without Ubuntu Software Center in Lubuntu I was unable to edit opening apt links in any program in Firefox (see this question) After installing Ubuntu Software Center, that problem is solved, but could I use other program instead of Ubuntu Software Center for the same purpose? I find it too heavy, and to install I prefer the Terminal, gdebi, Lubuntu Software Center or the Synaptic. (Now that I have the apt option in Firefox/Preferences/Applications, I try to change Ubuntu Software Center to Lubuntu Software Center but this does not change the option.)

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• Screen brightness dull after upgrade to Ubuntu 14.04

  - by user288426

  After upgrading to Ubuntu 14.04 I found that I could not increase screen brightness. I'm using a Samsung NC110 netbook. Initially the function key to modify brightness did not respond at all. After implementation of the first part of the fix, the key came alive and the brightness bar could be modified. Yet at maximum brightness indicated the screen still remained very dull. The 2nd part of the fix cures that problem, at least for this type of machine. First part of the fix was copied and modified in line with my experience from following post: How to control Brightness Open a terminal (Ctrl + Alt + T). Then type sudo nano /etc/default/grub. It will ask for your password. Type it in. Around the 11th line, there will be something like: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash". Change it to: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor" Save the file by Ctrl+O followed by Ctrl+X. Then run sudo update-grub in the terminal. Reboot and see if backlight adjustment works. Then I needed to modify the rc.local file. Therefore read below fix to understand the procedure: problem with adjusting brightness Ubuntu 14.04 In my case I had 2 folders listed under /sys/class/backlight which were: intel_backlight samsung I realized that the samsung folder is governing. I had to modify the check for max brightness to: cat /sys/class/backlight/samsung/max_brightness In my case the max value obtained is 8. Besides putting this into rc.local, I also had to uncomment the first line to get this working. My rc.local under /etc/ now looks as follows: !/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. echo 8 > /sys/class/backlight/samsung/brightness exit 0 Now I can modify brightness on my netbook and also can get the screen up to its maximum brightness. Hope this is helpful.

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• Can't install NetBeans

  - by João Vinholi

  I had never had problems with netbeans installation, but now I am. I have downloaded JDK and JRE properly as I always do and I have started the installation using the terminal as well. When the screen for JDK directory selection comes, I select the JDK folder that I have downloaded, but for some reason the following warning is shown: "An error occurred while validating the path." Do you know what could be?

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• Putty-like copy/paste

  - by BarsMonster

  For ages I've been using Putty when working with *nix servers, and I really got used to it's copy&paste method: select, left-click - for copy, just right-click - for paste. How can I set Ubuntu terminal the same way? I see there is a shortcuts configuration, but it does not allow me to set keys I need. Ctrl+Shift+C, Ctrl+Shift+V is just braking my fingers. I know there is a menu on right-click, but I don't need it.

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• How to make Google SketchUp work with Intel graphics in Wine?

  - by haltman

  Hi, everybody! My pc has an Intel DH57JG mainboard, I've installed wine, launching sketchup I receive error that I don't have OpenGL installed, is there a way to configure/install it? On my previous pc with an NVidia video card installing official NVidia driver resolved it. Is there is a way to do the same with the Intel card? Running locate libgl on a terminal returns no results. thanks in advance.

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• Logging every time a command is run

  - by Tom D

  I want to log every time I run a certain type of command in the terminal. For example, every time I run: sudo apt-get install [something] I want to add [something] to a log file in my home directory that will look like the following: [timestamp] [something] 2012-10-02 mysql-server 2012-10-03 ruby1.9.1 2012-10-06 gedit-plugins 2012-10-07 gnome-panel synaptic What's the easiest way to make this happen automatically?

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• Adding custom applications to Gnome launcher

  - by Shaftoe2702

  Looking for a utility that allows me insert an item into the list of applications that GNOME knows about. For example: I have downloaded Eclipse EE (I have some very special plugins that I need to work with, and those plugins don't "like" the version available in the default repository). I'm using GNOME 3, on Ubuntu 11.10. So I want to execute Eclipse w/o opening a terminal and running it. It must be something very simple.

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• I add a PPA but the software does not show up in Ubuntu 11.10 updates nor Software Centre

  - by dunderhead

  Every time I add a PPA I cannot see the package I'm trying to install. I suppose I must be doing something wrong! So here's my latest effort: In a Terminal I typed: sudo add-apt-repository ppa:jeromerobert/misc and that seemed to work correctly Then I typed: sudo apt-get update But when I go to Synaptic or Software Center the application I want to install is not there. Could someone please tell me what I'm doing wrong?

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• Apple veut traquer les utilisateurs dans leur propre maison, un brevet décrit un système permettant de contrôler la maison via un iDevice

  Apple veut traquer les utilisateurs dans leur propre maison un brevet décrit un système permettant de contrôler la maison via un iDeviceApple veut traquer les utilisateurs de ses technologies au point de prendre le contrôle de leur maison.C'est en tout cas ce que laisse présager un nouveau brevet de la firme qui vient d'être validé.Le nouveau brevet décrit une technologie qui permettra de localiser l'utilisateur via un terminal mobile, et de commander automatiquement les appareils domestiques...

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• Starting problem fresh installed 12.10

  - by Emir Bulic

  I have downloaded ubuntu 12.10 image recently,and burned it to disc to install on my laptop everything worked fine until now,when i started it first time it got stuck on loading (Ubuntu title and dots below) i tried restarting and it got through,but new problem appeared After typing my password and logging in,it just freezes there with background and mouse pointer only visible.i can start terminal with ctrl alt f4 but thats all then after few mins,error comes up saying that application compiz has closed unexpectedly.whatever i click (relaunch or leave closed) it just stays frozen with background only.

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• how to display list of partition under 'Go' menu

  - by Roy

  I'm installing ubuntu 12.04 on my asus A43S notebook, but couldn't see any other partition under the 'Go' menu. I tried 'sudo fdisk -l' seems fine, it displays all partition. I also installed ubuntu 12.04 on my PC but there were no problems, all partition are listed under the 'Go' menu, and automaticly mounted when I clicked on them. question is, how to display all partition just like on my PC does, I don't want to mount via terminal each time I need to access them. thanks.

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• Fusion-Icon does not show up in system tray

  - by Schubibuntu

  I can't find a solution for my problem online: I'm running Unity 2D in Ubuntu 11.10 and want to enable compiz effects. I installed compiz config settings manager, and Fusion-Icon, but when I start Fusion-Icon nothing happens. When I execute it from terminal it stucks at lines like "setting update 'command'" or "setting update 'next_key'" I already set the whitelist for the panel to 'all'. Anyone knows what I'm missing? Thanks in advance!

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• A problem with installing skype

  - by Arnas

  I recently got a 9,04 version of ubuntu and for the past day i was trying to install skype ( sounds funny i know ) and when I write 'sudo apt-get install skype' I get this error in the terminal The following packages have unmet dependencies: skype: Depends: libqt4-dbus (>= 4.4.3) but 4.4.0-1ubuntu5~hardy1 is to be installed Depends: libqt4-network (>= 4.4.3) but 4.4.0-1ubuntu5~hardy1 is to be installed Depends: libqtcore4 (>= 4.4.3) but 4.4.0-1ubuntu5~hardy1 is to be installed Depends: libqtgui4 (>= 4.4.3) but it is not installable How could I fix this problem? THanks

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• Login keyring box frozen

  - by Maddie

  I'm new to ubuntu and I'm afraid I've done something really stupid. After booting, When prompted to enter a password to unlock my login keyring, I tried to enter in my password, but it won't let me. I can move my cursor but everything else is frozen. I tried to access the terminal by using Ctrl + Alt + F2, I entered my login and password from there and it worked, I just don't know what to do afterwards. Don't know what other information I can provide other than the fact that I am using Ubuntu 10.04

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• Tried every possible method but couldn't enable compiz?

  - by 9kkmin

  a newbie, installed ubuntu 10.10 about a month ago,over the month i fixed everything from dad playback,to webcam,but couldn't enable compiz anayway,my card is blacklisted, i tried the SKIP_CHECKS=yes,method and even tried ghex editing,but of no avail,now all i get when i run compiz in the terminal is "segmentation fault",the specs of my laptop is intel core i3 2330,and intel hd graphics 3000,has anyone has been able to run compiz on intel hd graphics 3000?

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• "No caching mode page present" when USB flash disk attached

  - by evgeny9

  When attaching a USB flash disk (NTFS formatted) to a laptop with Ubuntu Server 12.04 on board, I get following messages: [ 3572.355603] sd 2:0:0:0: [sdb] No Caching mode page present [ 3572.355640] sd 2:0:0:0: [sdb] Assuming drive cache: write through [ 3572.361599] sd 2:0:0:0: [sdb] No Caching mode page present [ 3572.361636] sd 2:0:0:0: [sdb] Assuming drive cache: write through I get them right in the terminal, so that I should press Ctrl+C to proceed with working (entering commands). Is it normal or do I have to setup Caching mode somehow? Thank you.

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