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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Failed to fetch error: Hash Sum mismatch

I can't update. I want to install GNU Radio also but system is not getting update. sudo apt-get install gnuradio also doesn't work.
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1answer
47 views

apt-get -f install is trying to remove sudo

I was trying to get a program to work, and installed a different version of wine that overwrote the version of wine I already had. (That version ended up not working) So I tried installing the default ...
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27 views

How do I block Zeitgeist from ever being installed on my system?

How do I block Zeitgeist from ever being installed on my system? I find it quite frustrating that this is continually trying to sneak in the back door. I do not want this on my computers, ever though ...
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37 views

Ran `apt-get dist-upgrade` - now my terminal has a white background?

I am running the Ubuntu 16.04 Beta and I ran apt-get dist-upgrade today and suddenly the background color of my terminal is white (with black text). However, in the preferences of the terminal, it's ...
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16 views

How to provide a ppa for a project on Github in README?

I have uploaded the source on Github but I want to provide the PPA in the README file so that users can directly do sudo add-apt-repository -y ppa:foo/project Then update the cache using: sudo ...
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46 views

No space left on device, but there is . Messed up plasma

I installed baloo4 yesterday in an attempt to fix my dolphin search. I shouldn't have done that! When I rebooted, plasma basically doesn't start up properly. Desktop background is black, can't use ...
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1answer
50 views

Ubuntu install unbootable after sudo do-release-upgrade -d [closed]

I was running Ubuntu 14.04 LTS and wanted to upgrade to the latest non-LTS version available. I ran sudo do-release-upgrade -d but something went wrong during it. I rebooted and found out I couldn't ...
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2answers
66 views

Can't install Steam because of unmet dependencies

Today I tried to install Steam using sudo apt-get install steam. It didn't work and showed me this error: barend@barend-ubu:~$ sudo apt-get install steam Reading package lists... Done Building ...
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40 views

can't add key - keyserver timed out

I'm trying to install mongodb on ubuntu 15.10. While following this - Install Mongo 3.2 on Ubuntu 15.10 - i got the following error message: W: GPG error: http://repo.mongodb.org ...
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2answers
25 views

Network configuration | apt can't download anything

I'm having some issues with the FTP server I'm currently setting up for my company. I installed the server completly, updated everything and the server works fine now. I installed everything behind a ...
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1answer
34 views

Ubuntu 14.04 updates

Every now and then when I go to System Details (or About This Computer directly from the panel) it shows that updates are available (button Install Updates). When I click on install updates, software ...
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17 views

easy way to make a fake package depending on libfoo-dev's when compiling from source? [duplicate]

I often install various development libs required by some package I'm compiling from source and/or hacking on temporarily. I like keeping track of what I install in these situations so that I can ...
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2answers
76 views

getting warning when i use sudo apt-get update command

I am getting error when i use sudo apt-get update command Get:58 http://us.archive.ubuntu.com wily-backports/multiverse Translation-en [28 B] Get:59 http://us.archive.ubuntu.com ...
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1answer
43 views

Unable to install ClamAV on 14.04 Ubuntu

I am struggling with Clamav, no matter what I do I get an error Reading package lists... Done Building dependency tree Reading state information... Done Package clamav is not available, but ...
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1answer
22 views

How can I keep track of all the packages / dependencies that are installed when I run apt-get for a specific package?

I am trying to write a script that runs in the background and keeps track of the packages I install manually with the apt-get command. For example - I open up a terminal and run sudo apt-get install ...
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29 views

Apps from Ubuntu Software Center don't update [duplicate]

Last year I installed FileZilla using Ubuntu Software Center (14.04). I noticed it hadn't upgraded in a while, and so I checked the Center, and sure enough, USC says Canonical does not provide ...
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2answers
34 views

Getting following error while installing `cowsay` [duplicate]

I tried to install cowsay using the command: sudo apt-get install cowsay I received the following error message: E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily ...
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2answers
67 views

Unable to install build-essential, held broken packages

So I was trying to set up my computer for development. I installed ubuntu 14.04 LTS. I wanted to write a hello-world-program. However I can not compile it. After some searching, I tried sudo apt-get ...
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1answer
27 views

Which old kernel related files can I safely delete?

I frequently run into the issue described in Not enough free disk space when upgrading, because the boot partition created by the Ubuntu installation is too small. When cleaning up as described in the ...
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1answer
52 views

Help! I can't install anything because of subprocess error [SOLVED]

I don't know what happened but suddenly with no reason no apps and packages could get installed. When i want to install a package with sudo apt-get install <package> I get this error: ...
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1answer
28 views

how I can fix the apt.conf? I don't need of the proxy

So, I'm going to solve my issue, I found the apt.conf to be responsible of a apt-get malfunction. I need a no proxy setting in it. How to fix it?
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0answers
86 views

Unable to install anything using apt-get

I looked through some threads and couldn't find a solution, apologies if this is a duplicate. After messing up an installation of some package (see below), attempting to install anything yields: $ ...
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1answer
51 views

using apt to migrate from 1504 to 1604 [duplicate]

I forgot how to migrate from 1504 to 1604 using apt. I am not sure how to do this it has been so long. I am not even sure where to look for this help. Thank you
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46 views

Reading package list…Error

Reading package lists... Error! W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages ...
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1answer
4k views

Can't install php5 on Ubuntu 16.04

so I've recently installed my first Ubuntu, to be precise, a daily build of 16.04, on my new laptop since the hardware was to new for 15.10. Now I'm in the process of setting it up and I want to ...
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1answer
63 views

How to Install GUI on Ubuntu server 15.10 [duplicate]

I would like detail instructions on How to Install GUI on Ubuntu server 15.10
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1k views

Failed to download repository information 16.04

I seem to get a failed to download repository when trying to update my computer on a fresh install of Ubuntu 16.04 Xenial. And it is not on any repositories I have added it's on the stock ...
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14 views

How to configure apt proxy that uses two factor authentication

I understand how to configure the apt proxy that uses username/password authentication but I have to go through a proxy that supports two factor authentication via RSA hard token? I cannot even run ...
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1answer
17 views

Unknown Error:'<class 'KeyError'>'("The cache has no Package named 'steam')

Error notifcation in the status menu saying An Error occured, please run Package Manager from the right-click menu or apt-get in terminal to see what's wrong. The error message was:'Unknown ...
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1answer
38 views

Why am getting this error when I try to install Emma?

I get the following error when I try to install Emma, how can I resolve this problem? Package dependencies cannot be resolved This error could be caused by required additional software packages ...
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1answer
55 views

Installing git on ubuntu 14.04 crashed

I'm unable to install git on ubuntu here is the response sudo apt-get install git Reading package lists... Done Building dependency tree Reading state information... Done Some packages could ...
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1answer
109 views

Problem with sudo apt-get update on Ubuntu 14.04 virtual machine

My problem began when I was tried to install the mmtsb (multiscale modelling toolset for structural biology) on an Ubuntu 14.04 Virtual Machine on a Windows Host. I tried giving the ./install.sh ...
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0answers
38 views

var lock issue right after installing JDK and soapUI on my machine

I have been dealing with an issue all day here. I cannot seem to have apt-get work for anything whatsoever. I have been through several parameters here including trying these following solutions: ...
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41 views

Command after apt-get install is not executing in script

I wrote a question on serverfault, but I guess it's more applicable for this commnity. I'm writing a script which is meant to initially set up my Droplet. In the script, I'm opening ssh connection ...
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56 views

Manually download flashplugin-installer

When my web browser informs me that my version of Flash is outdated, I update with the command $ sudo apt-get install flashplugin-installer Which works fine except the download is very slow (e.g., ...
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3answers
70 views

Failure while apt-get update

Just installed server 14.04 LTS on server i have, but everytime i try to use "apt-get update" it fails with the output: .... Reading package lists... Error! E: Encountered a section with ...
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2answers
5k views

Installing PHP 5.6 on Xenial (16.04)

I need to use php5 (5.6) because I'm working on a Drupal 7 project which doesn't support php7. The problem is I recently updated to ubuntu 16.04 Xenial which seems to no longer support php5. I tried ...
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0answers
29 views

You want to run apt-get update to correct these problem

Hi I tried to upgrade Ubuntu using command: sudo apt-get upgrade following bu command: sudo apt-get dist-upgrade While running the second command, the graphics crashed and even on the graphic ...
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36 views

APT and the Devel Release

So I was looking around on the web, and I found out about the development release. It really popped out to me, because it's a rolling release, based on what I understand. I am aware that it sacrifices ...
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1answer
34 views

cant use apache2 in ubuntu 14.04

I need to install apache2 on my ubuntu system. On running the command: sudo apt-get install apache2 I get this error: Some packages could not be installed. This may mean that you have ...
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1answer
85 views

Can not install xserver-xorg-video-nouveau xorg-video-abi-15 because of the error of unmet dependencies

When trying to run sudo apt-get install xserver-xorg-video-nouveau xorg-video-abi-15 I am having the following error, is there any solution for it. The following packages have unmet dependencies: ...
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12 views

Unable to fetch some archives?

404 Not Found [IP: x] Failed: command not found root@vps:~# Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-libc-dev_3.11.0-12.19_amd64.deb 404 Not Found [IP: x] Failed: ...
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1answer
17 views

iptables-persistent / netfilter-persistent has (dependancy?) problem on 15.1

I'm trying to install 15.1 x64 on a new VPS. The first thing I do is ssh in and define a few iptables rules to drop non-ssh traffic, and now want to make those rules persistent. So: root@server:~# ...
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2answers
22 views

Used CURL to get NodeJS, how to remove the files (have not installed nodeJS yet though)

I used: curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash - because I wanted to install NodeJS, but after executing the command - I realised I used the wrong command. I need NodeJS version ...
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1answer
64 views

apt-get update failure explanation

Go ahead, vote it as duplicate, but none of the answers provide a good explanation of what really is going on. Nor did what they suggest work. Can you please explain the elements involved in the first ...
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0answers
13 views

Haveing trouble installing veil-eversion

After this operation, 1,157 MB of additional disk space will be used. Do you want to continue? [Y/n] Y Extracting templates from packages: 100% Preconfiguring packages ... dpkg: error processing ...
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1answer
26 views

to remove broken packages 14.04

I want to remove/reinstall the broken package libopenni-sensor-primesense0 I have tried all commands i.e sudo aptitude install <packagename> sudo aptitude -f install <packagename> sudo ...
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16 views

Why did removing OpenJDK also uninstall Tomcat7?

Disclaimer: I am a newbie to Ubuntu. I installed Tomcat7 on Ubuntu 14.04. I then realized that the Java being used by the OS was OpenJDK. I wanted to uninstall OpenJDK so as to install Oracle's ...
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2answers
73 views

mysql not getting installed

I installed mysql with the following command sudo apt-get install mysql-server and it got installed correclty.then i uninstalled it by refering this link ...
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0answers
35 views

dpkg: error processing package at (--configure)

This is the full error message I am receiving when trying to install any new packages. I tried purging/removing the "at" package but those actions were overrided. I'm relatively new to linux/ubuntu ...