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 do I unlock “/var/lib/apt/lists/”? [duplicate]

I was installing an item using package manager when it froze. I used Alt + F2 to close it. Afterwards, whenever I try to install anything via apt-get, the terminal reads: E: Could not get lock ...
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How can I Resolve dpkg dependency?

administrator@zlounes:~$ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct ...
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Did I accept the ttf-mscorefonts-installer EULA?

The general answer to questions about missing video codecs is to install ubuntu-restricted-extras. But that metapackage also includes the ttf-mscorefonts-installer which requires acceptance of a EULA ...
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2answers
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bypass the yes/no prompt in apt-get upgrade

in order avoid typing out all of the apt-get commands when updating my computer i have made a simple alias command to do it. But i really want to be able to just type in my alias and let it do its ...
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How to use https with apt-get?

Does apt-get use https or any kind of encryption? Is there a way to configure it to use it?
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How do I bypass/ignore the gpg signature checks of apt?

All of the key-servers I visit are timing out. I need to install packages without checking the signatures of the public keys. Is there a way to bypass all the signature checks/ignore all of the ...
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1answer
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What does 'Ign' mean when running an apt-get update?

I had a bunch of errors in the output of sudo apt-get update: duplicate entries and 404 not found errors. Figured those out, I hope: I removed PPAs that didn't have any packages associated with ...
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apt: ureadahead will be reprofiled on next reboot

I typed this command to remove a package and related configuration files: sudo apt-get --purge remove supervisor The command ended without errors but I got this message: ureadahead will be ...
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408 views

What happens during a package upgrade?

I recently started building Ubuntu packages for my software on Launchpad. They are pretty simple; most of them just contain some files and scripts that are trigged through the .install .preinst ...
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1answer
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How to solve configure: error: readline library not found?

I have an Ubuntu 10.04 LTS server with a minimal install that I want to compile postgres on. With the minimal install the server did not have gcc so I had to do an apt-get install gcc but now I keep ...
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What happened to /etc/apt/apt.conf?

I was browsing through the apt folder to try my proxy settings and I was unable to find the apt.conf file in Ubuntu 11.04. Is there any alternative file for it? Adding proxy settings to 99-synaptic ...
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How to install multiple PPAs and applications at once?

I'm going to set up a couple of general use computers on one of my lab's work benches. There's a whole bunch of PPA repositories and applications from the Ubuntu repositories that I'd like to install ...
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Solving the Ubuntu 12.04 Update Error: (-5 - No address associated with hostname)

Problem Description: Each time i try to download the updates for my operating system (Ubuntu 12.04) i get the following list of error messages: W:Failed to fetch ...
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36k views

How to resolve “Failed to download repository information”?

Whenever I try to install anything with the Ubuntu Software Center, the following error appears. Failed to download repository information Check your Internet connection. E:Unable to ...
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5answers
9k views

Cannot install icaclient due to problem with ia32-libs

Finally, Citrix released a new version and Ubuntu updated their guide HERE (apparently, it were the dependecy changes as we found out). It should work now kind of out of the box. I have a problem ...
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How to correctly remove a PPA source? [duplicate]

Possible Duplicate: How can PPAs be removed? If I've added a PPA with "sudo add-apt-repository" should I just delete a file in /etc/apt/sources.list.d, or there is a command for removal?
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3answers
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How to know last time apt-get was executed?

I known that the command to update the repository lists is apt-get update. How to check if it has been executed today or in the last 24 hours? I do not known if should check some file timestamp. Or ...
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2answers
970 views

“sudo apt -get install foo-” causes removing foo package and everything depends on it

While working in command prompt, I accidentally typed following command: sudo apt-get install python3- and ubuntu started removing python3 and everything depends on it (including firefox and much ...
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3answers
4k views

How to bypass/remove/disable the untrusted package authentication

First the image: then me saying "Say What!!.. How the..What the..??". Basically I am stunned. How can I disable/bypass/remove/explode the option for the untrusted packages not letting me install ...
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4answers
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Why does apt-get fail when automated with cron?

I'm trying to use cron to automate my system updates. You can see my crontab, commands, and resulting errors below. When I run upgrades.sh as root, the script runs fine. When cron runs it, apt-get -y ...
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3answers
785 views

Is there a way to check if a program is available in the repository by commandline?

When i find a interesting program i want to test and install in ubuntu i first check if it's available in the repository. For that i use the software center. But does a possibility exist to check it ...
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3answers
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What is the equivalent apt-get or aptitude command

Is there an equivalent to the yum "whatprovides" option in apt-get? For example on CentOS yum whatprovides /usr/share/gdm/themes/TreeFlower/background.png Tells me ...
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Need to prevent a package from being installed

I have a package I do not want to be installed even if another needs it. Is there any way to "blacklist" a package from being installed even as a dependency of another? Can I overcome the fact that ...
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3answers
850 views

Would there be any negative side-effects of sharing /var/cache/apt/ between two systems?

In the interest of conserving bandwidth, I'm considering mounting a VirtualBox host's /var/cache/apt as /var/cache/apt in the guest. Both host and guest are Ubuntu 10.10 32-bit. Would there be any ...
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1answer
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Installing MariaDB when Apt reports MariaDB has unmet dependencies or broken packages

I have tried everything to install MariaDB on this clean Ubuntu installation but I keep getting this error, Some packages could not be installed. This may mean that you have requested an impossible ...
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22k views

How do you open Apt links in Ubuntu?

I'm trying to download an Apt file but I don't know how to. I'm using Firefox too.
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3answers
1k views

How can I configure apt-get to clean automatically after every install

Is there any way do apt-get clean after apt-get install automatically, like in other distros?
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428 views

Can do an “apt-get update” but for only for one package?

After adding a new ppa to the repository, is it necessary to update the whole database? By "whole database" I mean is it necessary to update index's of each and every packege? If it's not necessary, ...
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2answers
28k views

What to do when can't update anymore with apt-get?

I'm using Ubuntu 9.04 as multipurpose server, so no GUI here. I haven't used it for a while and now when trying to install or update packages with apt-get it throws errors. An excerpt of the error ...
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3answers
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Problem installing Python-Dev

I am having trouble installing python-dev. It all started when I tried to install another Python package and got the error: SystemError: Cannot compile 'Python.h'. Perhaps you need to install ...
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2answers
342 views

Will apt-get download the same version of a package manually added to /var/cache/apt/archives?

Imagine, I have all packages to install, say, ddd. If I copy all ddd packages to /var/cache/apt/archives and run sudo apt-get install ddd in terminal would apt-get download the packages or skip them. ...
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What's the difference between apt-get install and apt-get build-dep?

On the apt-get man's page, one can find this: install pkg(s) This option is followed by one or more packages desired for installation. Each package is a package name, not a fully qualified ...
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Can I use other than Ubuntu Software Center to open apt links?

Without Ubuntu Software Center in Lubuntu I was unable to edit opening apt links in any program in Firefox (see this question) After installing Ubuntu Software Center, that problem is solved, but ...
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1answer
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Where do packages installed/upgraded with APT get stored?

As time goes by we tend to do apt-get install and add or replace software. Are these archived in some form or do they get auto-cleared after installation? And if it doesn't get auto-cleared, it would ...
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How to fix “-5 No address associated with hostname error” while updating?

I am getting this error frequently while updating Ubuntu 12.04 LTS. How can I fix it? Log is: Ign http://archive.scrapy.org precise/main Translation-en Fetched 6,620 kB in 1min 21s (81.2 kB/s) W: ...
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Where are the daily builds for Chromium for 12.04?

I am running now Ubuntu 12.04 Precise Pangolin but i still have today problem with this sources for chromium. Anyone have the Daily-Dev apt sources for chromium? Failed to fetch ...
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1answer
486 views

Authentication problem with my PPA

I created a package and uploaded it to my PPA. After it got built, I went to install it, but was faced with this message: ******@******-laptop:~$ sudo apt-get install stackapplet Reading package ...
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1answer
470 views

How can I get “delta” packages to optimize apt-get upgrade downloads?

I have recently installed Fedora in VirtualBox and noticed that they use Delta-RPM packages, which help dramatically reduce downloading sizes. Also I heard that Gentoo uses some delta packages. Would ...
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1answer
248 views

How can I know which commands were installed with a package?

How can I get a list of commands that have been installed with a particular package? For example, if I install Chromium, what should type now? Or if I install moreutils, how do I know which commands ...
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2answers
330 views

How do I get security updates for restricted/partner packages?

I want to perform just security updates on Ubuntu 12.04 LTS, keeping the rest of the system unchanged. I need to do this from the command line, no the GUI update manager. I have implemented the ...
8
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1answer
11k views

Apt “could not find a distribution template” error

When I attempt to install anything using apt-get I get the following error: Traceback (most recent call last): File "/usr/bin/add-apt-repository", line 60, in <module> sp = ...
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2answers
9k views

I can't add PPA repository behind the proxy

I'm trying to add the ppa repository (as a root) with the following command: export HTTP_PROXY="http://firstname.surname@xxx.com:my_pass@165.x.x.232:8080" add-apt-repository ppa:nilarimogard/webupd8 ...
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3answers
135 views

how much space does a given package, and dependencies, cost?

given a package name, I want to find how much space would be freed up if the package, and its dependencies, were deleted. As dependencies might be shared between packages, maybe the right way to put ...
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3answers
9k views

apt-get fails to upgrade, install, remove etc

I upgraded from 11.10 to 12.04, had no issues that I noticed. Recently tried to install something via software center, but it was throwing errors. Changed to trying to sudo apt-get install instead but ...
8
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1answer
219 views

Annotating packages at installation to ease maintenance with apt / aptitude

I manage my packages with aptitude. I occasionally go through my list of packages, removing obsolete applications (in the sense that I do not want to use them any more). For example, while I have a ...
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27k views

E: Unable to correct problems, you have held broken packages

I am using Ubuntu 13.04 which I installed few days back. I am trying to install nodejs and npm. I tried to install from command line first and then uninstalled it. Then something broke. sudo apt-get ...
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What is the command line equivalent for the update manager?

When I do sudo apt-get update sudo apt-get upgrade Sometimes the Ubuntu GUI Update Manager will still have some items left. e.g. “Complete Generic Linuux kernel”. I know there's also sudo apt-get ...
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downgrade ppa packages to versions available at a previous point in time

The backstory is that the normal Intel GPU drivers don't do the various OpenGL extensions that my hobby coding and some games want. So I have to install xorg-edgers and then its happy. However, last ...
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How to set up PHP with Nginx, APC and PostgreSQL?

I use Ubuntu Server 10.10 and I would like to set up a web server environment with NginX, PHP 5.3.3, PostgreSQL and preferably APC and PHP Suhosin. I have already set up PostgreSQL with apt-get ...
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554 views

How can I downgrade packages without removing their dependants?

I have a number of mesa packages that I had upgraded to a PPA version, before purging the PPA so I could upgrade my system. The differences in the versions are minor (they are technically the same, ...