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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do-release-upgrade crashed, now how to restore?

I had a weird disk error (software-side: btrfs) that caused my upgrade to 14.10 to fail halfway through. I've been able to get things working fairly well, but two things are troubling me: Several ...
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18 views

Key exists already but getting GPG error

I am using Ubuntu 14.04 64 bit desktop,and updating worked fine before, but suddenly it doesn't (it is a long time from last updating, so I can't ensure what operation leads this problem). As you ...
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I apepar to have broken apt-get - how do I figure out what I need to do to fix it?

The first clue that something was wrong as that aptd likes to eat all the CPU: Help: “aptd” is maxing out my CPU? I should have been clued in by the fact that my upgrade died in a rather spectacular ...
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71 views

Package dependencies broken

So I've been trying to install cmake using apt. sudo apt-get install cmake But I get this error message: Reading package lists... Done Building dependency tree Reading state information... ...
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30 views

Apt-cacher-ng “known data hit, don't write to”

I am using Ubuntu 12.04.1 LTS (Precise Pangolin). kernel version 3.10.39. I install apt-cacher-ng server with 0.7.2-1ubuntu2.1 version. With time, downloading of packages becomes extremely slow ...
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34 views

Openssl is not installing

I am trying to install Openssl in my Ubuntu 64bit os which is running in Virtual Box, But i am keep getting the following error. root@Ubuntu64Bit:~# sudo apt-get install openssl Reading package ...
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34 views

Updating hard limit of “maximum open files” of running process

I am trying to increase the "maximum open files" limit of my running process (apt-cacher-ng). I am following below link http://gregchapple.com/updating-ulimit-on-running-linux-process/ By following ...
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13 views

Reinstallation of ubuntu causes install option to disappear

I reinstall ubuntu on my machine which causes removal of install option in software center. There are tons of answers available regarding this, I have tried most of them but unable to solve my issue. ...
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33 views

Problems opening frescobaldi on Ubuntu 14.10

I had frescobaldi installed on my machine running Ubuntu 14,10. I wanted to upgrade to the currrent version of that program and attempted to do so using the source code on their website. Now when I ...
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16 views

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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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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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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59 views

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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50 views

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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64 views

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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34 views

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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50 views

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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64 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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104 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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26 views

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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32 views

apt-get fails to do anything

After upgrading Ubuntu from Ubuntu-12.04-adm64 to Ubuntu 14.04.1 LTS via ssh (on VDS) For most of commands apt-get returns something like this: Setting up python3-minimal (3.4.0-0ubuntu2) ... ...
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can't work any of the 14.04 crash fixes

None of the fixes work. I've tried them all. For example, all Ubuntu tells me is: root@kevin-desktop:~# sudo apt-get remove compiz-plugins W: Not using locking for read only lock file ...
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29 views

replicate an ubuntu installation (14.10)

I had to create a number of identical machines with ubuntu 14.10 on them. These are physical machines, not VMs, with specific 14.10 packages installed. I think I need to create a preseed configuration ...
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35 views

Error message when updating pakages

I just started getting this error message when attempting to run sudo apt-get update: W: Failed to fetch cdrom://Lubuntu 14.10 Utopic Unicorn - Release i386 (20141022.1)/dists/utopic/Release ...
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95 views

Errors were encountered while processing: /var/cache/apt/archives/ubuntu-release-upgrader-core_1%3a0.220.7_all.deb

Hey guys I not a ubuntu expert but Im I having a problem and I dont know how to fix it I already tried apt-get clean dpkg --configure -a and nothing I still have the same error when I launch ...
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37 views

Software update shows a stop sign and no wifi/ethernet connection. 14.04.1

On Ubuntu 14.04.1, have been for a while. Symptoms: Screen resolution is low and no internet connection. I have tried both wireless and cable. There is a no entry ...
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46 views

Data files for some packages could not be downloaded

I got this message when starting the system The following packages requested additional data downloads after package installation, but the data could not be downloaded or could not be processed. ...
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32 views

Problem with apt-get update

Hello I'm having a problem with "apt-get update", every time I type the comand it shows me the next error: "E: The method driver /usr/lib/apt/methods/hhtp could not be found" I know the problem is ...
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62 views

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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24 views

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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38 views

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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41 views

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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95 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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17 views

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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38 views

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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24 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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275 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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126 views

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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39 views

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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61 views

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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55 views

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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46 views

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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52 views

The ISA Server requires authorization to fulfill the request

I installed Ubuntu 14.10. My network requires proxy and authentication to connect to the internet. I edited the file /etc/apt/apt.conf to this value Acquire::http::proxy ...
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32 views

ConVirt won't run. Requirement.parse('SQLAlchemy==0.5.6'))

ConVirt 2.5 on Ubuntu Precise won't run. Tail line of the error is: File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 588, in resolve raise VersionConflict(dist,req) # XXX put more ...
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71 views

Synaptics Package manager and Software Manager crash

Hello when I try to open Synaptic Package Manager in Ubuntu 14.10 this error message appears: E: Type ‘apt-get’ is not known on line 1 in source list /etc/apt/sources.list.d/mono-xamarin.list E: The ...
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49 views

Updating through apt-get in terminal versus the Software Center

There have been several times in my memory that I will be prompted via the Software Center GUI to download system and application updates. It tells me the size of the total updates that will be ...
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45 views

Why does this fail to make my postfix configuration step non-interactive?

I have a bash script to automate configuration of new Ubuntu systems. It works, except that postfix's process installation persists in bringing up a menu-based interface. I followed the answer given ...
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65 views

problems with apt-get upgrade

After the last update of my server i got this error message: udev (204-5ubuntu20.9) wird eingerichtet ... * udev requires hotplug support, not started ...fail! invoke-rc.d: initscript udev, ...
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26 views

How can I modify the Ubuntu-12.04 Server ISO to include non-default kernel and headers (lts-raring in my case)

I have an ISO which I am customizing via preseeding. I am able to customize it from the preseeding point of view but I want to do a little more. The ISO image I am using is the standard ...
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37 views

Where are the 14.04 server manifests?

I am trying to get a list of all packages installed since the initial server install on a server. I tried: http://unix.stackexchange.com/questions/3595/list-explicitly-installed-packages/80520#80520 ...