Advanced Packaging Tool, the package manager for Debian-based distributions. It is also the most used tool for installing packages in Ubuntu. Questions about using any of the apt tools should use this tag.

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Apt-get update comes up with "Sources list couldn't be read [duplicate]

I tried to update the packages through the terminal and I get this error every time, david@david-Satellite-C55-B:~$ apt-get update E: Type ' Now the Software center doesn't work and I have a warning ...
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Can't understand difference between liblapack3 and liblapack3gf

I need to install the lapack library in an ubuntu computer for linking to a code I am developing. I have been told to apt-get install liblapack3, but the only one I found is liblapack3gf. My list of ...
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How Can Solve VLC Installation [duplicate]

I am Using Ubuntu 14.10! VLC is My Default media player! But all on a sudden I found that the player has been This error could be caused by required additional software packages which are missing or ...
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Xubuntu -f install problems seems to be causing many problems

When I try to do anything in terminal I get a with -f install. this pops up: $ apt-get -f install E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the ...
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sudo apt-get install php5-imagick gives “404 Not Found” error and “E: Failed to fetch …” [duplicate]

Running: sudo apt-get install php5-imagick failed, and produced output including this in the middle: Get:7 http://us.archive.ubuntu.com/ubuntu/ trusty/main libavahi-common3 amd64 0.6.31-4ubuntu1 ...
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143 views

How to fix unmet dependencies when upgrading? [duplicate]

I'm running Ubuntu 14.04.2. After installing some programs this weekend --and perhaps having been too incautious with ppa's and/or the apt-get autoremove option-- I seem to have unmet dependencies ...
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Is there a way to configure Ubuntu to auto-select doc and devel packages?

Quite often, software comes in multiple packages: The binary package, i.e. foo The documentation package, i.e. foo-doc The developer package, i.e. foo-devel (i.e. if foo is a library) For example, ...
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How do I install linux headers when I am getting a “has no installation candidate” error

Primary Problem I am unable to run any virtualization software. Namely Vmware or Virtualbox. Since both of them asks me to install (or produces some error which pints to ) installing build essentials ...
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cannot upgrade Kubuntu 14.10

I have Kubuntu 14.10 with Linux desktop001 3.16.0-30-generic #40-Ubuntu SMP Mon Jan 12 22:06:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux kernel and when I issue command for system upgrade: clear ...
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2answers
57 views

Error message + Ubuntu Software Center down

I'm new to Ubuntu, and despite all what I could read, I cannot find, or I'm just unable, to fix my problem. In the upper right corner of the screen I have a "stop" sign, that says: An error ...
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Does installing a deb file add to repository list? [duplicate]

For example I want to install Google Chrome via deb file. Will it be added to my repository list for apt-get update and apt-get upgrade? If not, how would I go about updating it and other software ...
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npm unresponsive after nodejs install on fresh Ubuntu 12.04.5

Here's where I'm at... I have an old chromebook that I put Ubuntu (and Xfce) on via crouton. After installing the chromium browser, I installed nodejs via apt-get. I found that when trying to install ...
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1answer
143 views

Packages are broken with unmet dependencies - cannot install fglrx

I'm new to Ubuntu and trying to survive, but, I can't figure this one out - hopefully it's easy! Ubuntu Software Center says: New software can't be installed, because there is a problem with the ...
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1answer
174 views
+100

Unmet dependencies for libglew-dev

I'm getting the following error message when attempting to install libglew-dev, Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not ...
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3answers
61 views

Accidentally installed Lubuntu and want to revert to Ubuntu

I am using Ubuntu 14.04.1 which is a fresh install of about one month old. I was trying to get 5.1 surround audio to work so I followed the instructions here which suggested the following commands: ...
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1answer
38 views

apt-get update says I have not permission [duplicate]

lately whenever i try to update through the terminal I get this message E: could not open lock file /var/lib/apt/lists/lock - open (13: permission denied) E: unable to lock directory ...
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Error in Installing RevKit

@ubuntu:~$ sudo apt-get install build-essential cmake python-dev ipython python-qt4python-numpy Reading package lists...Done Building dependency tree Reading state information...Done Package ipython ...
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1answer
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Can't install package bcmwl-kernel-source package [duplicate]

Need to get my wireless network adapter working on Ubuntu 14.1, but when trying to install the required package bcmwl-kernel-source, the "apt-get install bcmwl-kernel-source" installation command ...
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Install munin via apt, without apache

Is it possible to install Munin via apt without apache ? I'm using already nginx, and it makes for me no sense to run a second web server, even as proxy.
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Unknown / Unexpected /Unseen apt-get update error (Ubuntu 14.04)? [duplicate]

I am getting error while sudo apt-get update Could not open file /var/lib/dpkg/status open (2: No such file or directory) Can't call method "policy" on an undefined value at ...
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1answer
82 views

How to fix Ubuntu 14.04 update problem?

I am trying to update my Ubuntu 14.04 (64 bit) and the software updater shows this error: Check if you are using third party repositories. If so disable them, since they are a common source of ...
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2answers
25 views

Single list item stopping package manager

Full error log: starts here: E:Unable to parse package file /var/lib/apt/lists/ubuntu.c3sl.ufpr.br_ubuntu_dists_trusty_universe_i18n_Translation-pt%%5fBR (1), The item above is from universe and ...
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53 views

Linux Mint : Very slow internet connections through proxy [closed]

I have changed to Linux recently. Here I am experiencing very slow Internet connections for applications like apt-get and Firefox browsing through proxy (download speed in Firefox is pretty normal). ...
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E: Package 'python-numpy' has no installation candidate

When running sudo apt-get install python-numpy I am getting this error : Reading package lists... Done Building dependency tree Reading state information... Done Package python-numpy is not ...
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1answer
180 views

Problem installing Broadcom BCM43142 on HP Pavilion 15-p073TX NB PC

I know this sounds similar but my problem is unique. I have a new HP Pavilion 15-p073TX NB PC. Recently I installed Ubuntu 14.04.2 but was not able to start WIFI. I searched a bit and got some answers ...
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U 14.04.1 won't load Unity either Terminal or anything at all but the Desktop Background

The problem occurred after installing some updates. The reason for this action was because I wasn't able to install most of the packages I tried to using apt-get and there was suggestion that this ...
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1answer
86 views

Can't get rid of GPG error in apt [closed]

Before you mark this one duplicate hear me out: When I run sudo apt-get update I'm getting the following classic error: W: GPG error: http://de.archive.ubuntu.com trusty-updates Release: The ...
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2answers
513 views

Steam Install Error on 14.04 Ubuntu 64bit

I have tried some of the solutions posted elsewhere in the support forum, one seemed like it worked but after a steam update i found myself back at square one I am a new Linux user and am already at ...
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834 views

Unmet dependences! when install Cuda 6.5 on a freshly installed ubuntu 14.04

I follow the tutorial here to install Cuda 6.5, and when I try apt-get install cuda, I get the following errors: The following packages have unmet dependencies. libcheese-gtk23 : Depends: ...
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1answer
40 views

How to fix GPG error on Intel Linux Graphics Installer?

I'm trying to use Intel Graphics Installer, but i get the following error: E:GPG error: http://ppa.launchpad.net trusty InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require ...
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Why Does “apt-get install npm” Remove A Bunch Of Plesk Files?

See: root@iandpdev2:~# apt-get install npm Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: gyp ...
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Installed NPM w/ apt-get, Now 502 Bad Gateway

Installed NPM with Apt-Get, now nothing works. 502 bad gateway error from NGINX on all sites on server. It removed a ton of Plesk packages for some reason. I didn't expect it to break my entire ...
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1answer
51 views

Affect to Applications caused by Security Updates?

I want my Server to run "unattended-upgrades" regularly and Keep my server auto update and install only security Updates. But I have a problem, that I don't want to update the main version of few ...
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Software Center not functioning, not installable, and not removable, with a persistent live USB in 14.04

I'm using a persistent live USB to run 14.04. I used Ubuntu Software Center a few times to download software, but suddenly it stopped working. The logo is still there, but when I click on it the ...
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How does the fallback mechanism of apt update work in case of connection problems?

While installing the updates today, I noticed this: Get:15 http://in.archive.ubuntu.com/ubuntu/ trusty-updates/main libdns100 i386 1:9.9.5.dfsg-3ubuntu0.2 [626 kB] Err ...
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1answer
31 views

Unable to locate package lighttpd1.5

I try to install the issue tracking tool youtrack and the installation instruction recommends lighttpd 1.5 with it. sudo apt-get install lighttpd Will only install version 1.4 – for 1.5 I followed ...
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40 views

Apt-get fails to upgrade “python-samba” on Ubuntu 14.10

I've already searched on google, but I haven't found a solution that works for me yet. As I recently booted into my Ubuntu GNOME 14.10 (I have set up a dual boot with Windows 8.1 on a second ...
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35 views

How to reinstall unity

I accidentally seem to have removed compiz and unity with by typing sudo apt-get install -f here is the output: The following packages were automatically installed and are no longer required: ...
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1answer
27 views

Installing Different Versions of a Package

I am trying to use apt-get to install a specific version of amsynth. If I simply do sudo apt-get install amsynth It installs version 1.3. However I would like to install version 1.4. After searching ...
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46 views

How to install python-gpgme ubuntu 14.04

I installed Dropbox but when I run it. I get an error saying: In order to use dropbox you need proprietary daemons. Install python-gpgme. Then, I headed over to installation of that python module ...
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1answer
32 views

Dependencies causing apt-get to fail to install gcc/g++

I've been attempting to run apt-get install gcc-4.8 g++-4.8 so I can install the build-essential package. I get this error when I try to install gcc/g++: Reading state information... Done Some ...
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41 views

E: The package fglrx-core needs to be reinstalled, but I can't find an archive for it

Im using Ubuntu 14.10 Genome I tried to install the AMD fglrx-core driver and now I cant remove anything or install anything Sudo apt-get install -f does not work me@me:~$ sudo apt-get install -f ...
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2answers
19 views

how can install Horizon dashboard?

I added Juno Openstack repository. How I can install Horizon only dashboard? I had tried sudo apt-get install horizon and there is error: E: Unable to locate package horizon. I had installed Horizon ...
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1answer
14 views

Package in repositories labelled “local or obsolete” after upgrade from 14.04 to 14.10

After upgrading to 14.10, the packages libcairo2 and libcairo-gobject2 are under the "Installed (local or obsolete)" even though these packages are in the utopic repositories. A large amount of ...
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1answer
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Install package with dependency built from source

I just built PostgreSQL from source on a fresh Ubuntu 14.04.1 install. Now I need to install PostGIS but I'd rather install from the package. However, since I built Postgres from source, apt-get ...
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30 views

apt-get install proxy problem: no such file or directory

I can't seem to install anything using apt. I guess it's a proxy issue, but I checked /etc/environment and I've included all the necessary proxy information. I've included a picture of the errors I'm ...
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1answer
15 views

Ubuntu 14 wget issue

Whenever I try to wget http://media.steampowered.com/installer/steamcmd_linux.tar.gz I get an error that the server was unable to resolve hostname. Any solutions for this?
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2answers
60 views

Restore default apt repositories in sources.list from command line

I am looking for the best method to restore /etc/apt/sources.list to default from the command line. Is there no way to reference the source code of the package which generates this file or something ...
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apt-get upgrade dialog box for modified configuration file - how to use

Still struggling through an apt-get upgrade from the console on Ubuntu 12.04 It's now found a difference in the grub config file, but this time instead of asking what to do on the command prompt, ...
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1answer
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more or less pager - how to quit

Idiotic question of the day On Ubuntu 12.04 server console, I've run an apt-get update followed by an apt-get upgrade Everything was going swimmingly; when it got to MySQL, it warned me it was about ...