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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I'm not able to upgrade NodeJS on Ubuntu 14.04

I'm currently using Ubuntu 14.04 LTS, and I installed NodeJS 0.10. I am now trying to upgrade to version 5 of NodeJS. I used the commands below to upgrade: wget -qO- ...
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2answers
49 views

Ubuntu packages don't get update

I get this output: 7 packages can be updated. 7 updates are security updates. Last login: Tue Apr 19 10:04:51 2016 from 10.0.0.199 whenever I connect to my server. and I still see these packages ...
3
votes
1answer
80 views

E: GPG error: http://mega.nz ./ InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)

Running Xubuntu 14.04LTS Originally, I was getting the following error E: GPG error: http://mega.nz ./ Release: The following signatures were invalid: NODATA 1 NODATA 2 Did what this answer told ...
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1answer
40 views

Unable to connect to internet behind proxy using terminal in ubuntu 14.04

I am having trouble while running sudo apt-get update. It is asking for proxy authentication, even ping google.com not working. Though I have updated apt.conf file at /etc/apt/ location but still not ...
0
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1answer
18 views

Why are utopic packages installed by default on 14.04.2?

I've installed Ubuntu into VirtualBox 5.0.16 from a 14.04.2 iso image. I didn't do anything fancy, just accepted the defaults all the way through the installation process, except choosing to install ...
0
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0answers
46 views

Launchpad packages not found upon update

When I run sudo apt-get update I get these errors at some point: W: Failed to fetch http://ppa.launchpad.net/upubuntu-com/web/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found W: Failed ...
1
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1answer
28 views

Removing faulty links from /var/lib/apt/

When I use apt-get, I get the following error: E: GPG error: http://repository.spotify.cofy.com stable Release: The following signatures were invalid: NODATA 1 NODATA 2 I've pasted the link into ...
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0answers
32 views

Why is dpkg -i faster than the ubuntu software center?

Why is using sudo dpkg -i package.deb to install deb packages faster than double clicking on the deb file and installing it through the software center? I have seen a very significant time gap ...
0
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1answer
37 views

Unable to remove Multiple Nvidia Drivers Ubuntu

There were multiple drivers installed on my Ubuntu 14.04 system, so I was unable to run OpenCL programs. I therefore did sudo apt-get remove --purge nvidia* to start all over again. However when I do ...
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2answers
41 views

Can multiple versions of the same package co-exist on the same system?

In order to install tmux 2.1, I needed to install libtinfo5 version 6, I did this by downloading a .deb archive containing libtinfo5 and installing directly with command: sudo dpkg -i ...
0
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1answer
31 views

Problem with sudo apt-get upgrade

It tells me to try to run apt-get -f install. The error says "Unmet dependencies. Try using -f." When I try sudo apt-get -f install I get an error that says dpkg-deb: error: subprocess paste was ...
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2answers
24 views

Am i missing packages ? - After removing Wine 1.9.5 - removed packages - help

I have been using Ubuntu for a while now. Yesterday I tried to install WINE 1.9.5. For some reason it didn't show up in the Dash so I tried to uninstall it as instructed in the terminal: sudo ...
0
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1answer
36 views

Can't install Upwork application on Ubuntu 15 with gksu

I am not able to install Upwork 64 bit application on Ubuntu, reason I am asking this again as I followed the answer posted in another similar question but I could not get it working. I am having ...
0
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0answers
36 views

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.
0
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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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0answers
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 ...
0
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0answers
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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0answers
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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0answers
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
51 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 ...
0
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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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0answers
41 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 ...
0
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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 ...
0
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0answers
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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0answers
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 ...
0
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2answers
78 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
44 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 ...
0
votes
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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0answers
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 ...
0
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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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vote
2answers
70 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 ...
3
votes
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 ...
0
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1answer
53 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: ...
1
vote
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: $ ...
0
votes
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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0answers
46 views

Reading package list…Error

Reading package lists... Error! W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages ...
1
vote
1answer
5k 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 ...
0
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1answer
64 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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0answers
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 ...
0
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0answers
15 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 ...
0
votes
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 ...
0
votes
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 ...
0
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1answer
56 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 ...
0
votes
1answer
112 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
39 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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0answers
43 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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0answers
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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votes
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 ...
10
votes
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 ...