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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Error while loading shared libraries: libOSMesa.so.8: cannot open shared object

On Ubuntu 14.04 LTS, I need to install the libOSMesa8, one of the Mesa 3D libraries. In particular, I need the file libOSMesa.so.8 to run the graphic tool Asymptote. Only libosmesa6 is available ...
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when i tried to use the code “$ sudo apt-get update” the following message is displayed. what does it mean? [duplicate]

when i tried to use the code "$ sudo apt-get update" the following message is displayed. what does it mean? W: Duplicate sources.list entry http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu/ ...
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1answer
49 views

Error when adding ppa repository: keyserver.ubuntu.com: Host not found [duplicate]

I had to reinstall Ubuntu today and despite having configured proxy for Apt, when trying to add a new PPA, the step that communicates with keyserver.ubuntu.com fails: $ sudo add-apt-repository ...
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1answer
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How get rid of -bash: /usr/{package}: No such file or directory

First, when I never had installed sl: diogosaraiva@Ubuntu:~$ sl O programa 'sl' não está instalado actualmente. Pode instalá-lo escrevendo: sudo apt-get install sl traslaction: "The program 'sl' is ...
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Ubuntu Server not using proxy settings

i am using the ubuntu server package (terminal only) and i am struggling to get the proxy server working. there is no username/password for the proxy. When i am trying to do sudo apt-get update i ...
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1answer
46 views

XFCE - Unknown Tray Icon

Question: After doing an update on my Xubuntu: sudo apt-get update sudo apt-get dist-upgrade I found after restarting the following tray icon I was not able to identify: I was guessing that it ...
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1answer
44 views

Unable to update Ubuntu 12.04: Connection refused

I am unable to update my current version of Ubuntu. Here is the output of sudo apt-get update: Err http://archive.canonical.com precise Release.gpg Could not connect to archive.canonical.com:80 ...
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1answer
86 views

Unable to install any package using apt without the need of an extra package

I wanted to install Android Studio. So, I followed this: sudo apt-add-repository ppa:paolorotolo/android-studio sudo apt-get update sudo apt-get install android-studio But then this started ...
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Debian: Remove files from a source package

There exist a dh_install command who reads install, pkg.install and install additional files. Does exist something similar for removing files who are installed by upstream sources but I don't want to ...
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23 views

dpkg depedencies

Got server from another person with problem with dpkg .. When I try to upgrade I got this message $ apt-get upgrade Reading package lists... Done Building dependency tree... Done You might want to ...
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Purge or remove command in APT tries to install new packages, how to circumvent this?

I am running Ubuntu 14.04.1 64-bit and when use the purge command for openjdk-7 it suggests to install various packages and I cannot cancel it. Is there a possible work around this issue? You can see ...
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Why does apt-get not update everything? [duplicate]

Many times, when I do: sudo apt-get update sudo apt-get upgrade There will be updates that can be installed with the GUI update/upgrade manager (such as Muon) that were not applied by APT. I also ...
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2answers
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unable to install apache2 on precise

Below is the error while running the command: root@mycompanyname:~# apt-get install apache2* Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to ...
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1answer
26 views

Install some packages (with deps) on machine that has no internet connection [duplicate]

I have server with installed minimal "Ubuntu 14.04. server" on it. This server has no internet connection. How can I deliver on this machine packages like qemu-kvm, libvirt-bin, virtinst (with their ...
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uninstalling ns-2.35 from ubuntu

sairamana@sairamana-Aspire-4739Z:~$ sudo dpkg -P ns-allinone-2.35 [sudo] password for sairamana: dpkg: warning: there's no installed package matching ns-allinone-2.35 ...
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1answer
47 views

Unable to correct problems, you have held broken packages while installing nfs server?

I am trying to install nfs server on my Ubuntu 12.04 machine but everytime it is giving me an error like this - david@machineA:~$ sudo apt-get install nfs-common nfs-kernel-server Reading package ...
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35 views

Update PHP without removing every dependency

I'm having an issue where I just need to do something as simple as upgrade my PHP version from 5.3 to 5.6. The only issue is that Plesk is installed and I don't know how to upgrade it without Plesk ...
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Error Message in Arista Transcoder, how to install ffdeinterlace plugin?

I keep getting this error message when I want to transcode a dvd into say an avi file format. This is the error message I get: "Required plugin could not be found" "Python (v2.7) requires to ...
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1answer
82 views

How to install programs from a .deb file, like apt-get install supertux

I am an maintainer for a lot of computers in my town running ubuntu 12.04 and 14.04 with mate desktop, this is to help people just having a computer that just works :), and i cannot make them all do ...
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1answer
25 views

Update Error on my Ubuntu 14.04 [duplicate]

I am getting this error while my update never completed fully. W:Failed to fetch http://ppa.launchpad.net/iaz/battery-status/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found , E:Some ...
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apache2 can't open config file

apache2 has come preinstalled on the VPS that I am using. However, upon using the apache2 command to start it in the terminal (PuTTY), it reported that it couldn't open the configuration file. Using ...
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Same error message at end of every update run

Each and every time that I run update, the last 4 lines read as follows: Reading package lists... Error! E: Encountered a section with no Package: header E: Problem with MergeList ...
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Unable to install mysql-server-5.6 on ubuntu 14.04 [duplicate]

when i install mysql server on Ubuntu 14.04 san@san-desktop:~$ sudo apt-get install mysql-server-5.6 Output: E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: ...
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1answer
23 views

how to check package version before install

Im trying to install Apache 2.4.12 or apache2.4 at least. I see some listings for apache2.2 in the apt-cache, but I don't see apache2.4. How can I verify the actually version that sudo apt-get ...
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1answer
44 views

Can't install software from repository [duplicate]

I want to play games from mini clip website, tried it in Firefox. Even though it has flash player installed through software center, the games are not working. I tried chromium, but was unable to ...
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3answers
67 views

Cannot install WGET in Ubuntu 12.04.5 lts

What do you think are the reasons that causes this error? The program 'wget' is currently not installed. You can install it by typing: apt-get install wget If I type apt-get install wget the ...
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1answer
33 views

accidently removed python using purge

i accidently performed sudo apt-get purge python2 now my terminal wont show the colors and many libraries have been gone. Cant i revert back the changes even sudo apt-get build-essentials is ...
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Software Updater not detecting all upgrades [duplicate]

This happens every so often, I run this command in Terminal (after running sudo apt-get update): sudo apt-get upgrade And I get an output such as (this is what I got today): Reading package ...
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17 views

How to submit package to science universe repository?

I am one of the authors of an open-source (GPL) scientific package that I would like to make available to Ubuntu users through the science repository. Is there a step-by-step guide on how this is this ...
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1answer
19 views

Can Stand-alone deb packages be updated?

I've downloaded and installed a deb package of Ubuntu Tweak from its website: http://ubuntu-tweak.com/. Is there a way to watch for updates for the package like packages which are in a repository?
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1answer
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install avr-libc

I'm using Avr controller for programming into Ubuntu, for that I'm installing library using following command, which gives error asphalak@asphalak-HP-Pavilion-11-x360-PC:~$ sudo aptitude install ...
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1answer
54 views

Unable to install packages using apt-get (Strange error)

prathya@Shriyansh:~$ sudo apt-get install i8kutils [sudo] password for prathya: Reading package lists... Done Building dependency tree Reading state information... Done ...
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install libav version 9 in ubuntu14.10

Ubuntu 14.10 uses libav api version 11 but i want to manually install the libav version 9 because the version 11 is not supported by opencv so how do i remove the old libav and all the dependencies ...
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Install package into virtualenv using apt-get

According to this answer, apt-get installs packages system-wide (from canonical), and only pip can install packages into a virtualenv (from Pypi). However, I need to install a package into a ...
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146 views

VirtualBox for Ubuntu 14.10 Kernel driver not installed (rc=-1908)

I have this error message: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. ...
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libperl-dev fails to install because it can't find dependencies

I'm trying to install libperl-dev onto a server via chef but the server fails to install with the following error message: Err http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main libc-dev-bin ...
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Ubuntu 14.04 unmet dependencies is not being resolved

I am completely new to ubuntu and I fell in love with it. I am completely happy with its features. But The problem is I've got some red icon in the task bar that is showing the following message: ...
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how kernel gets upgraded on ubuntu 14.04 installation?

There are linux-generic and linux-image-generic packages, that track latest linux-image package as their dependency. Those packages could be used to update kernel automatically but they aren't ...
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2answers
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apt-get clear previously failed install

so, everytime I try installing a package using apt-get it is also downloading previous failed install (previously I install dropbox). how to remove/forget latest failed install? Setting up ...
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274 views

Unknown error: '<class 'KeyError'>' (“The cache has no package named wine-staging-i386”)

There is an error sign on my Ubuntu panel which states the error given in the title. I used sudo apt-get update but it gave me no errors. However the error sign persists. How do I fix this?
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Cannot remove openjdk without having an older version installed, how can I do so?

I am running Ubuntu 14.04.1 64-bit with Oracle Java installed, hence I would like to uninstall openjdk, but when I try to uninstall it via the command line I get the following output: ~$ sudo apt-get ...
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1answer
126 views

Can't Install wine without dependencies

Followed this guide to install wine. After adding repository installed wine using: sudo apt-get install wine1.7 But I get the following error: The following packages have unmet dependencies: ...
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When i try to install Google Chrome (i386 64 bits) it ask me to remove pidgin-indicator. How can i get both running?

When i installed in first time pidgin-indicator from webup8 PPA (i have Ubuntu 14.04 64 bits), i didnt noticed that it removed me Google Chrome. When i realized that, i tried to install again Chrome, ...
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0answers
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How can I use equivs-build to build packages that can be installed on older versions of Ubuntu?

I have several versions of Ubuntu installed, including 14.04 and 10.04. When I build packages using equivs-build on 14.04, it generates .debs that contain .xz-compressed data. The version of dpkg on ...
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Ubuntu 14.04 Installation of libdrm-dev

I am trying to install mesa-common-dev (sudo apt-get install mesa-common-dev), however I get the following message: mesa-common-dev: Depends: libdrm-dev(>= 2.4.52) but will not be installed. ...
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update-apt-xapian-index and chrt

update-apt-xapian-index can be an annoyance on older computers. Are there any bad side-effects known when changing scheduling priority to SCHED_BATCH in for example apt-apian-index with chrt -b ...
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1answer
57 views

Apt-get fails to fetch inside an LXC container

I have an Ubuntu 14.04.1 LTS server that's running LXC containers. The containers run Ubuntu 14.04.1 too. Network config of host is pretty standard, static IP, ISP's DNSes (IP1/IP2) plus google's : $ ...
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70 views

When to apt-get upgrade

It seems that every time I install software an apt-get update is helpful but when exactly is an apt-get upgrade necessary? Or perhaps, when is it helpful?
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Software Updater & apt-get upgrade not working

So i bought a new laptop and it had Ubuntu 12.04 installed in it.Since i saw info about the new versions i decided to update to 14.04 following the procedures in the forum. After the upgrade my ...
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1answer
43 views

Connect cluster controller to the region controller (MaaS)

I'm trying to build a MaaS cluster and this is what I've done so far: Region Controller install ubuntu 14.10 configure interfaces configure dns apt update apt upgrade apt install ...