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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Package 'perforce-swarm' has no installation candidate

Disclaimer: I have relatively little experience with Linux I am attempting to install perforce swarm following this guide: ...
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Software Updater not showing all updates

I HAVE found similar questions here, but not exactly the same. Ubuntu 14.04, Gnome 3/Gnome Classic Software Updater pulls some updates, but not all (yes, it is set to show all updates immediately). ...
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E: GPG error ubuntu 15 apt-get update

I am getting this when I run apt-get update $ apt-get update Get:1 http://security.ubuntu.com vivid-security InRelease 98% [1 InRelease gpgv 199 B] [Connecting to zm.archive.ubuntu.com]Splitting up ...
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1answer
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Failing to install doc-base

When trying to sudo apt-get install libbz2-dev I get an error related to doc-base Setting up doc-base (0.10.6) ... Segmentation fault (core dumped) dpkg: error processing package doc-base ...
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Why is Ubuntu moving to Snappy packages?

Why Ubuntu dumping .deb packages and moving to .snappy packages? (At least for now they are keeping .deb package for normal distributions). .deb is already the most popular packaging out there. ...
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how to restore ubuntu 12.04 or reinstall accidentally removed packages?

I just accidentally removed libnl-3-200, and all the relative packages have been removed, now there is now internet in my ubuntu laptop. Is there anyway to reinstall it and all the relevant packages ...
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Why are some packages unfindable in new non-LTS releases of Ubuntu?

Well, simply put I've installed the new Ubuntu 15.04 but it does not contain my favourite Netbeans IDE in its repository. I certainly did run sudo apt-get update. Why is this so? Does this mean that ...
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2answers
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Can't install anything from the terminal of software center in 15.04

A while back I installed some software (I think it was some SDK software) and it didn't work so I removed it. Ever since I have been having problems with Ubuntu. That was back in 14.10 and I was ...
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1answer
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Stripping image metadata

A while back, on an old installation, I had installed a package that allowed me to view and delete metadata from images. I'm fairly certain the syntax was as follows To display the metadata in an ...
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/var/cache/apt/apt-file/gb.archive.ubuntu.com_ubuntu_dists_vivid-backports_Contents-amd64.gz: PUA.File.Exploit.CVE_2012_1461 FOUND

I recently scanned my machine with ClamAV (using the latest virus definitions) with this command: sudo clamscan -r --detect-pua --infected --bell / And this was one of the outputted results: ...
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1answer
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Unable to upgrade or remove broken virtualbox package

I'll start with some details of what led up to this: I'm using Ubuntu 14.0 (KDE on top although presumably that's irrelevant) a few days ago I let the system do an auto-upgrade. It crashed partway ...
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Failed to update Ubuntu Server 14.04.2 LTS (Trusty Tahr)

The following error is being encountered: Atteint http://mg.archive.ubuntu.com trusty-backports/restricted Translation-en Atteint http://mg.archive.ubuntu.com trusty-backports/universe Translation-en ...
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Problems with python-gtk2-dev after update to Ubuntu 15.04

Every apt-get operations gives me the following error message: dpkg: warning: subprocess old pre-removal script returned error exit status 1 dpkg: trying script from the new package instead ... dpkg: ...
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unmet dependencies when trying install wine1.7

I'm trying to install wine1.7 from official ppa,my OS is Ubuntu 14.04 64bit, however when I use the apt-getcommand to install wine, the output is: The following packages have unmet dependencies: ...
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Mark package as installed [duplicate]

Using example package alpha, I would like to mark it as installed without actually installing it. This way if I later try to install it directly, or as a dependency, it will say it is already ...
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Slow apt-get download speed in 15.04

Today i installed Ubuntu 15.04. Its a nice upgrade over 14.04 but im having a issue. My apt-get download speed is too slow. It stays between 21 to 65 kb/s. i also faced same problem in Kali Linux few ...
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1answer
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default location of postgresql when installing through apt-get

When you install postgresql on 14.04, it sticks the main server program postgres at: /usr/lib/postgresql/9.3/bin/postgres the data directory where all the database clusters will be stored at: ...
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I can't install mysql on 14.04: “Unable to set password for the MySQL root user”

I have tried the solutions presented in Error installing mysql server on Ubuntu 14.04 but I still can't get it to work. The problem i think is when I install it asks me to set password, but then i ...
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The following signatures couldn't be verified because the public key is not available [duplicate]

I opened up the terminal typed sudo apt-get update and after it finished I got this GPG error: <W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be ...
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Manual Recovery

I installed ubuntu 14.04.02 on my netbook. So now I've got 2 os on my netbook, windows 8 and ubuntu. When I boot my netbook and choose to open on ubuntu, it says serious errors were found while ...
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apt-get is “Unable to locate package [package-name]” after upgrade to 15.04 [duplicate]

I installed Ubuntu 15.04, then I updated it and restarted. After that I can't install anything from terminal using apt-get install [package-name] any more. For every package it says Unable to ...
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Wrong headers for Linux version

I have an ODroid U2 running Ubuntu 14.04 LTS and Linux version 3.8.13.30. I am trying to get my USB WiFi dongle working through this tutorial. However, at the sudo dkms install 8192cu/1.10 stage, I ...
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1answer
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Problems in updating ubuntu [duplicate]

When i am running command sudo apt-get update, i am facing following problems : W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/vivid/InRelease W: Some index files failed to download. ...
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1answer
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Installing cuda toolkit Ubuntu 14.04 causes dpkg error

When I was installing cuda toolkit Ubuntu 14.04 causes dpkg error. This is what I did: sudo apt-get install build-essential followed by sudo dpkg -i cuda-repo-ubuntu1404-7-0-local_7.0-28_amd64.deb ...
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W: You may want to run apt-get update to correct these problems [on hold]

Please help me to instal the latest package. I'm using windown 64bit and 8.1 OS uname -i x86_64 Getting the following error: w ignoring provides line with depcompareop for package dynampis W: You ...
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Checking for updates error with source list [duplicate]

W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main i386 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-i386_Packages) I think ...
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How to install MongoDb 3+ on Ubuntu?

I've read this manual from the official website and did all the steps. sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10 echo "deb http://repo.mongodb.org/apt/ubuntu ...
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1answer
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Copying packages in PPA fail due to same version

I copied my package from trusty's repository also to utopic's repository of my PPA without re-building the binaries by using Launchpad's copy packages feature. Now I noticed that the utopic package ...
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1answer
32 views

I want to ignore “apt-get -f install”

When I want to install a new package, I get this error: You might want to run 'apt-get -f install' to correct these: The following packages have unmet de pendencies: cndrvcups-capt:i386 : Depends: ...
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Installing TinyOS on Ubuntu 15.04

I followed this tutorial carefully, but I still can't compile this hello world program. What did I miss? Should I install: nesc: 1.3.5 tinyos-tools: 1.4.2 tinyos-tools-14: 1.4.2 tinyos-tools-devel: ...
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Ubuntu 15.04 update-initramfs fails after packages installation

I have a big script I use in fresh installs since 14.10, but when using it on Ubuntu 15.04 I get an initramfs error. The script looks like this: echo "Starting configuration" && echo ...
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How to fix APT error during the “install the base system” in Ubuntu Server installation?

When installing Ubuntu 14.04 LTS Server, I get this error message: There are problems and -y was used without --force-yes WARNING: The following packages cannot be authenticated! Every time I reach ...
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Why does it keep saying apt-get command not found? Also why kde won't start? [on hold]

I read some other posts and they say I have to reinstall Ubuntu. How do I do that? Please help! I just updated my Chrome OS (I'm on a Chromebook) and now I cant open up my Ubuntu anymore. It just ...
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Can't install ubuntu-extras-keyring on Ubuntu 15

I am trying to install ubuntu-extras-keyring but I'm getting an error. The code I run is: sudo apt-get install ubuntu-extras-keyring and the result is: Package ubuntu-extras-keyring is not ...
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Trouble installing Elementary desktop environment on Ubuntu 15

I am trying to install elementary-desktop on Ubuntu 15.04 but when running sudo apt-get install elementary-desktop I get a slew of recommends/errors with this at the top: elementary-desktop : ...
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Ubuntu 14.04 LTS: Trying to install Ruby 2.0, but gnome-session-bin seems to be half installed

I cannot install any packages, the problem started when I tried to install the ruby2.0. Before, apt-get was installing everything. But now, every package returns this error: Processing triggers for ...
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Firefox stuck on old version and problems with held packages

i did a clean installation of Ubuntu 14.04.2 2 months ago and i noticed recently that firefox was stuck at version 36. I uninstalled it and then the system showed version 35 as the latest. The same ...
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1answer
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my ubuntu 12.04 software center wont work and i cant install software using apt-get

i try opening my software center then it closes after a few seconds, i read posts saying i should try some apt-get codes but it gave this error: Reading package lists... Error! E: Encountered a ...
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1answer
21 views

Trying to install nasm on my ubuntu 14.04 LTS but it get error

I get these errors when i try to install nasm using central software... installArchives() failed: (Reading database ... (Reading database ... 100% (Reading database ... 221927 files and directories ...
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16 views

Unable to install php5-intl on Ubuntu 13.10 [duplicate]

I am trying to install phpt-intl extension on Ubuntu 13.10 using the following command: sudo apt-get install php5-intl And I am having the following output: WARNING: The following packages ...
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Question about apt-mirror

I would like to make you a question about apt-mirror. It works fine but we would like to know whether it is posible to clean all unneeded packages available to the clients that connect to our mirror. ...
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1answer
36 views

How to install postgresql-9.4-postgis-2.1 on Ubuntu 14.04(Trusty Tahr)?

I get the following error when trying to install postgres-9.4-postgis-2.1 on Ubuntu 14.04(Trusty Tahr): Depends: libgdal1 (>= 1.9.0) but it is not installable I also tried to install the package ...
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1answer
24 views

Broken dpgk? Failure running script /usr/sbin/dpkg-preconfigure --apt || true

Ubuntu Server 14.04 apt-get install <package> produces the error: E: Waited for /usr/sbin/dpkg-preconfigure --apt || true but it wasn't there E: Failure running script ...
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Cannot check update sources in GUI (Software & Updates > Updates) - in 14.04 [closed]

[re-posted on U&L] I am in eOS Freya but I am posting here because I had the same problem before in Ubuntu proper or Xubuntu and have found a solution here that now I cannot find when searching. ...
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1answer
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apt-mirror: can't create /dir:/mirror directory at /usr/bin/apt-mirror line 342

The title of this question is the error message I receive after installing apt-mirror and apache2. As per the instructions set out by all the guides I've encountered. It informs me to modify ...
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How can I install dependencies from source in Lubuntu 14.04?

I need to rebuild and install one of the packages which is in the apt repositories (i.e. with modified options to ./configure). I first tried downloading graphicsmagic from the repos as a dependency ...
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Vivid apt-get update huge Package files in /var/lib/apt/lists/partial

# ls -Ssh /var/lib/apt/lists/partial | head total 88G 46G security.ubuntu.com_ubuntu_dists_vivid-security_main_binary-amd64_Packages.bz2 42G ...
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1answer
32 views

Removed lots of files on /boot but still the availble space is 0

I need to install some applications on my ubuntu, but apparently my /boot partition is full. running apt-get -f install Unpacking linux-image-3.13.0-49-generic (3.13.0-49.83) ... dpkg: error ...
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1answer
28 views

ERROR 403: Sorry, not allowed to fetch that type of file: jdk-7u80-linux-x64.tar.gz in 14.04 [duplicate]

I have had oracle's jdk7 installed on my 64bit Ubuntu 14.04 now for some time and it has behaved as expected. However lately all my updates has ended in errors and after some research I found the ...
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Software updates stuck downloading after 15.04 upgrade

I recently upgraded my system from 14.10 to the new version (I know, my second mistake, the first one was the upgrade to 14.10), 15.04. Let's say that since I did that, last Friday, I didn't notice ...