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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How to Remove Webbrowser Without Uninstalling Unity Webapps?

I want to save disk space by removing unwanted applications such as webbrowser(I use firefox). however, after sudo apt-get uninstalling or purging I can't open unity tweak tool, and by reinstalling ...
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2answers
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dpkg broken by oracle-java8-installer

I want to remove the oracle-java8-installer but it gives the below errors. Perhaps good to mention that I messed a bit with apt, e.g. at some point I manually removed the apt cache (but the java ...
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How can I build PHP5 Dependencies while having MariaDB installed?

I am trying to build php5 dependencies on Ubuntu 14.04.2 LTS. Unfortunately I get the following error message. % sudo apt-get build-dep php5 Reading package lists... Done Building dependency tree ...
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installing 32 bit libraries on ubuntu 14.04 64bit:errors

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 ...
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1answer
12 views

Can't install firmware-b43-installer online

I'm on a fresh install of Lubuntu 15.04 on a Dell Latitude D630 - specifically, I've got a Broadcom BCM4311 wireless network card. I've read through the instructions at ...
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1answer
8 views

Having problems installing Krita, unmet dependencies

sudo apt-get install krita Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested ...
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1answer
14 views

something wrong with my package lists(I think)

So when I'm trying to install something with apt-get, this happens, jabez@jb-Inspiron-3537:~$ sudo apt-get install libwxgtk2.8-0 Reading package lists... Error! E: Encountered a section with no ...
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“error: cannot find -lGL” in Qt creator 5.5.0 on Ubuntu 14.04 LTS

I am trying to build and run a sample program on Qt creator 5.5.0 and Ubuntu version is 14.04 LTS. Every time its giving an error cannot find -lGL and id returns exit 0. I tried to resolve this ...
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1answer
7 views

Software center is not working with proxy

I edited the /etc/apt/apt.conf with Acquire::http::proxy "http://071.12106en068:password@10.1.1.19:80/"; Acquire::https::proxy "https://071.12106en068:password@10.1.1.19:80/"; same with ftp ...
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Synaptic requiring too many additional removals?

I installed LLVM out of curiousity some time ago, not using it for anything specific. Today I tried removing it with Synaptic, the same way I installed it. The problem is, marking 'removal' on one of ...
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45 views

Can't install anything? [duplicate]

When I try to run something like sudo apt-get install rdesktop, I get this: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run ...
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2answers
27 views

Runnig apt-get install updated unrelated packages and is causing issues

I recently ran apt-get install unzip on an Ubuntu server, for some reason it started updating almost every package on the system - apache, php, git, mysql, numerous libraries and more. Eventually it ...
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Ubuntu 14.04 LTS with Epson L210 driver

I try to install driver Epson L210 on ubuntu 14.04. using icon 'printers' it got stuck installing after awhile key in the admin password. try other method`sudo apt-get install ...
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1answer
15 views

Unable to install latest git on Ubuntu

I have checked this answer and followed the same steps. My system throws git is already the newest version. But when i do git --version it shows git version 1.8.1.2 I need to install git >= ...
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1answer
19 views

dpkg error while installing fail2ban on ubuntu 15.04

I'm trying to reinstall fail2ban after upgrading from 14.10 to 15.04. I was getting these errors so I did apt-get remove fail2ban and then apt-get install fail2ban, however I still get these error ...
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// , How can I prevent Prey 1.4.0 and 1.3.9 installation happenning over and over as it tries chown?

// , I keep seeing attempts to chown files for prey 1.4.0 and prey 1.3.9 near the end of the output for any dpkg installation command. For instance I get the following spew in response to sudo ...
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1answer
17 views

14.04 - GPG error, public key not available

apt-get update returns: W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D46F45428842CE5E i've ...
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2answers
27 views

error with apt-get and dpkg

I cannot do any apt-get commands without error. I have tried many commands like sudo apt-get purge, sudo apt-get -f install, sudo dpkg --configure initramfs-tools, etc. I continue to get the ...
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Errors installing CUDA development libraries on Ubuntu 14.04

I'm having some trouble getting the CUDA development environment up and running on Ubuntu 14.04. I initially tried using the nvidia-cuda-toolkit package from the repository, and although everything ...
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37 views

Cannot update ubuntu 15.04 or install any package

Whenever I try to update or install a package this happens:( I have no idea how to fix this) anurag@anurag-desktop:~$ sudo apt-get install oracle-java7-installer oracle-java7-set-default Reading ...
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16 views

Errors were encountered while processing: android-studio

Whenever I install a new software or I use update command on the terminal i always get this error message and update is also interrupted. what do i do? I encounter the following error message- ...
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31 views

HTML in package list from Steam

This error suddenly popped up on my Linux Mint 17.1 install: E: Encountered a section with no Package: header E: Problem with MergeList ...
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Problems creating custom deb packages

I am trying to create a few packages that will replace ones that are existing from the standard Ubuntu repositories. I am currently testing this setup as a local file:/ repo to mimic how it will be ...
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66 views

An error occurred not sure how to fix it

I am new to Linux and Ubuntu and I recently got a error that is bothering me. I typed sudo apt-get install -f into the terminal it responds with this Reading package lists... Error! E: Encountered a ...
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1answer
27 views

mysql-client-5.5 update error

I just run apt-get upgrade and many packets should be updated. I allowed them all (question after Disk Space and verification). After the download and my configured packages Ubuntu told me from an ...
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404 Not Found [IP: 91.189.91.24 80] when installing package on ubuntu 13.10 [on hold]

I am using ubuntu 13.10, and I am trying to install curl, and I am facing with this problem: sudo apt-get install curl ... Then this warning comes up: WARNING: The following packages cannot be ...
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1answer
27 views

Always getting error during apt-get install

Whenever I try to do apt-get install/upgrade, I always get a series of errors like below. Is it because of some incorrect entries in /etc/apt/sources.list file. If so, how to correct it? $ sudo ...
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6 views

apt-get with unstable connection?

I'm now on vacation for a month and my Internet connection is extremly unstable. I can't install any app, even with --fix-missing Is there an option to continue downloading after a "break" ? Thank ...
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2answers
34 views

How can I get a list with the packages selected by apt-get autoremove?

Is there any command that prints only the name of the packages that apt-get autoremove selects? I'm creating a script that updates the kernel, removes the old kernel and the unnecessary packages ...
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1answer
29 views

dpkg error while installing gnome-session-fallback

I was trying to do sudo apt-get install gnome-session-fallback. This is the output I get: (Reading database ... 353039 files and directories currently installed.) Preparing to unpack ...
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0answers
21 views

Can't open software-centre [duplicate]

I can't open software-center or even apt-get any programs. When I run the software-center via command I get this error: http://pastebin.com/wwxZe7ma Can anyone help? Also the steam thing you linked ...
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3answers
80 views

Need help removing linux-image-3.16.0-34-generic and linux-image-extra-3.16.0-34-generic

So I feel like a dunce having to post about this but, I need help trying to fix this issue, mostly because without the fix I can't install any new software or run updates. For some reason one of the ...
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1answer
205 views

sudo apt-get -f install #?

I'm reading a line in some instructions and one of the steps is written as: sudo apt-get -f install # Install dependencies and finish configuring the packages(s) so i'm wondering is the "#" what ...
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1answer
35 views

Steam hash sum mismatch and invalid file format errors

I have Steam Beta installed, and when I just ran: sudo apt-get update I got the following output: Ign http://security.ubuntu.com vivid-security InRelease Ign http://gb.archive.ubuntu.com vivid ...
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2answers
13 views

Unable to locate package mongodb-dev [on hold]

I try to install mongodb client for c++, but get this error message Unable to locate package mongodb-dev, when I do: $ sudo apt-get install mongodb-dev even though mongodb-dev seems to exists, ...
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0answers
11 views

Use DEB for distribution of WAR?

I have created a Java EE program with a WAR-file as a result. To run this file I use the JBoss Wildfly 8 server. Now I have multiple Ubuntu systems where I want to install the Wildfly server and run ...
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3answers
155 views

W: Failed to fetch http://repo.steampowered.com/steam/dists/precise/steam/source/Sources Hash Sum mismatch [duplicate]

I am having trouble updating and upgrading my repository. I receive the following messages when I update and upgrade: W: Failed to fetch ...
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3answers
27 views

How to edit/recover 'sources.list' file

How can I recover sources.list which has crash and I can not do any software update. When I click on the update icon I do not get any response. I try to edit the sources.list file the “vi”editor did ...
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1answer
39 views

E:The method driver /usr/lib/apt/methods/gpgv could not be found

Anytime I go to update and/or upgrade, apt-get returns the error below: Failed to download repository information E:The method driver /usr/lib/apt/methods/gpgv could not be found. Running: 12.04 ...
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1answer
19 views

How to install package from 12.04 on 14.04?

I am on 14.04 (64-bits) and I want to install some <package>:i386 packages from 12.04. The reason I want to do this is because some of my 32-bit applications work well on 12.04 but not on ...
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I installed Popcorn Time, it deleted all my Desktop items

Is anyone else familiar with this problem? What can I do to restore my data? Is there any default way Ubuntu backs up my stuff? Could it be moved somewhere? Nothing else is affected, only desktop, ...
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how to repair grub package in apt/dpkg?

When trying to remove obsolete packages I get the following errors for the grub package. How can I repair this? And what could have been the cause? Note that I tried to remove some java packages in ...
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1answer
22 views

Upgrade problem with add repositories and ubuntu software center

I want to Update my OS, Ubuntu 14.04 and I have problems with Ubuntu Software Center and add repositories for install more apps. the command: sudo add-apt-repository ...
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1answer
15 views

Set a local repo in order apt-get to handle .deb dependecies

I am trying to do something, which I have already done on .rpm distributions, on Fedora more exactly. Basically I want to create a local repository, which I can put a .deb file in, so that apt-get can ...
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1answer
37 views

Python is not working in ubuntu 14.04 LTS

I am getting the error: The program 'python' is not installed. You can install it by typing: sudo apt-get install python-minimal I have done this and it still gives me the same error.
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2answers
107 views

How to install software in terminal in one line and one time?

I want to create a code that I put my terminal to install few software at the same time. For example, after a fresh install, I like to install this kind of software, but I have to line per line... I ...
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1answer
32 views

Package list file for update in Ubuntu

If I execute update on Ubuntu: sudo apt-get update I do only updates, which are specified in some file . What is this file? (Sorry, if this topic is already duplicate) Probably I will set my ...
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1answer
17 views

/usr/bin/dpkg issue when installing apache

I think I may have deleted an important directory while uninstalling apache I'm experiencing the following issue when trying to install Apache: Setting up apache2 (2.4.7-1ubuntu4.4) ... cp: cannot ...
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1answer
19 views

Deploy application with Qt5 to 12.04

I need to deploy my application which is depend on Qt5.x. No problem with that on 14.04+, but for 12.04 users there is seems to be no way to get qt5 from standard package repository. I'd like to pack ...
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0answers
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Depends Debian problem [closed]

> > apt-get --fix-broken install Reading package lists... Done Building dependency tree Reading state information... Done Correcting > dependencies... failed. The following packages have ...