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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Failure on apt update in Trusty (14.04)

When I try apt update it fails with Hash Sum mismatch I already tried to change mirrors (like in How can I get apt to use a mirror close to me, or choose a faster mirror?) I also tried to ...
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Problem with Updater & Software centre : Ubuntu 12.04 LTS, Reading package list fails when I apt- update

I recently was runnning the auto updater and I got the red circle with a white line within saying: A problem occurred when checking for updates After reading a few of the forums here, I tried to ...
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Utopic Unicorn .. Login screen looks different and unity is slow all of a sudden wireless card no longer working

I'm not sure why, but after a reboot I have an ugly boot up screen and the other problems listed in the title. I think this may have happened during a sudo apt-get upgrade Where I got a seg fault. ...
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How do I fix dependency and tar problems with linux-image-extra* package?

Ubuntu 14.04.2 LTS Trusty Tahr linux-image-extra-3.13.0-49-generic_3.13.0-49.56 is current package The Ubuntu Software Updater is set to check for updates daily. The last set of updates included ...
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Can I make a read only image read write?

I have seen on this forum that I can't run apt-get on a read only image (I got one of the Ubuntu phones from BQ). Is there any way around this? One of the reasons I wanted an ubuntu phone was to play, ...
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Solving “E:dpkg interrupted … run 'sudo dpkg --configure -a'” with disk full

Installing a package with apt in a server failed with a "No space left on device" message. I removed a few hundred MB and ran sudo dpkg --configure -a again, just to get another "No space left on ...
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Problem when trying to update package in Ubuntu [duplicate]

When I try to update my package, as: amministratore@amministratore-System-Product-Name:~$ apt-get update I got this error, which are: E: Impossibile aprire il file di blocco ...
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1answer
76 views

System messed up due to partly remove of Python2 - How to restore it? [duplicate]

I installed python 2.7.9 then after a while I want to install python 3.4.3. So I tried to remove python with this command: sudo apt-get remove python but I installed a lot of tools and IDEs for ...
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13 views

Unmet dependencies while installing php5-curl [duplicate]

I am trying to install php5-curl via terminal in Ubuntu 14.04. I got following error. sanchit@sanchit-Satellite-A660:~$ sudo apt-get install php5-curl Reading package lists... Done Building ...
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39 views

How to get list of apps installed using sudo apt-get install? [duplicate]

I want a list of applications which I have installed only using sudo apt-get install and nothing else. I came across this post: How to list all installed packages? but the answer lists all ...
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1answer
16 views

checking what the previous versions of a package that were installed or checking transaction records for apt

I've got an ubuntu system that was upgraded from 12.04 (I think) to 14.04. I have a bunch of packages that were held, which I had to finesse into working, and a lot of non held packages. I did the ...
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1answer
45 views

apt-get very slow after downloads [closed]

I have a Open VZ based Ubuntu 14.04 minimal VPS with 4 cores and 2 gb RAM. When I try to install anything it downloads very fast as it should but then it takes forever after all the gets. ...
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2answers
56 views

Apt DartSDK install broke apt-get

I tried to install the Dart SDK on Ubuntu 14.04,but this apparently had unmet dependencies. I have not been able to resolve these dependency issues, and worse, I cannot install anything else using ...
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27 views

apt-get configured to use proxy with some sources but not others

Can apt-get be configured to use a proxy with some sources but not with other sources? I have a Ubuntu 14.04 trusty server on an AWS EC2 instance. It needs to use a proxy to get to ...
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31 views

Unmet dependencies on Ubuntu 14.04 when trying to upgrade to Hardware Enablement Stack (HWE) pack

When I try to follow the instructions here for 14.04: https://wiki.ubuntu.com/Kernel/LTSEnablementStack I get the following error: The following packages have unmet dependencies: ...
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74 views

apt-get upgrade error: Unmet dependencies

I am getting the following error when I do sudo apt-get upgrade: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f ...
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31 views

apt-get error for git, but not other packages

I just set up a fresh Ubuntu 12.04.5 server amd64 machine on VirtualBox 4.2 (I was having install issues on OSX 10.10 using 4.3) and I'm able to do apt-get install curl but when I run apt-get install ...
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1answer
57 views

ntop-ng installation, missing package

I'm trying to install ntop-ng on Ubuntu 14.04 via the official guide. However, I have the following error The following packages have unmet dependencies: nbox : Depends: tshark but it is not going ...
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2answers
50 views

How to get a list of the package home pages in a repository section from command line?

A while ago, I asked here about how to get the list of packages in a repository section from the command line. According to the Synaptic Package Manager, many of these packages feature a home page. ...
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1answer
74 views

Docky runs as regular plank. How can I get docky back?

I'm currently using docky as my primary app launcher. One day, docky just started running as regular plank. It just looks like regular plank, with regular plank settings window and options and no ...
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76 views

Unable to upgrade or install anything! (error code 1)

Basically I am unable to upgrade/install anything and there is a 'no-entry' sign on my taskbar. I believe the culprit is /var/cache/apt/archives/click_0.4.38.5-0~457~ubuntu14.10.1_amd64.deb I ...
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1answer
36 views

What layout/files should debian repository have?

I'm java developer. My goal is to wrap my objects into deb files / upload them to a private repository and install them from this repository. So my questions are: Is Debian repository just an HTTP ...
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1answer
567 views

Kernel updates will not install - boot partition full

I am running 14.04 LTS. Kernel updates will not install or uninstall. The boot space (approx 240Mb) is now full and using sudo apt-get autoremove, autoclean, clean or remove will not work. This all ...
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107 views

Messed up “update-notifier-common”-package / debian.deb882 not found

Unfortunately, when attempting to reinstall ttf-mscorefonts-installer and flasplayer-installer, I got the error that update-notifier-common is not working. According to root@AlkaliMetal:~# dpkg -s ...
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101 views

Cannot install anything! Unmet dependencies. Libre Office

Please help, I've searched around loads and can't seem to find a solution that works. I recently removed libre office and installed open office. After trying to reinstall libreoffice. I now can't ...
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1answer
22 views

postinst always fails because of debconf

I am having some trouble using debconf for my package. I ask for the mysql pw in the package.config file: . /usr/share/debconf/confmodule db_input high mypkg/mysql_root_pw db_go Then, in postinst, ...
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1answer
61 views

14.04 trusty: 'apt-get install' silently refuses upgrade package with unsatisfied dependencies

This is more or less replication of this question. I hope AskUbuntu is more suitable place for it. Short description: apt can't upgrade a package if some dependencies are missing (it's OK), but ...
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1answer
37 views

tftpd-hpa installation failed in ubuntu software center

the full error is here. $sudo apt-get install tftpd-hpa [sudo] password for ashokkrishna: Reading package lists... Done Building dependency tree Reading state information... Done ...
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1answer
81 views

Links and installation of codelite dependencies

I know you might want to mark this as an "duplicate" but it's not. All the answers on similar questions are either outdated or don't really include dependencies installation. dist-upgrade didn't help ...
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1answer
36 views

remove package with broken pipe problem

I installed qupzilla today to replace chrome (it was hogging WAY to much ram). I liked it and I wanted to update it to the latest version using there repository but as I tried to update it an error ...
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1answer
69 views

Red Triangle with an exclamation point [duplicate]

I am new to Ubuntu 14.04, having just installed it 2 weeks ago. I am running Ubuntu 14.04 as my only OS. I am a new user and I have to say I love the OS but I am having a difficult time learning it. I ...
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1answer
17 views

Contents of apt.conf erased by operating system

I have a customized /etc/apt.conf file. It has proxy information. It's structure is like this: Acquire::http::Proxy "http://user:password@ip_addr:port"; Acquire::ftp::proxy ...
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1answer
91 views

Terminal commands are not working Ubuntu 14.10 [duplicate]

How do I fix this major issue: E: Type 'sudo' is not known on line 3 in source list /etc/apt/sources.list.d/libdvdcss.list What do I do to fix this? This is what I get when I open Synaptic Package ...
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1answer
45 views

The difference between the different APT upgrade commands

I have seen and used all of these commands to upgrade packages on my system, but why are there different commands for this? Do they all not do the same thing? And if not, then in which situations ...
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33 views

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY

When I look for my error key number 0429ACCAF7AA50B3, it is not in the database, thus I cannot receive or generate anything even none of this did not work: ...
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42 views

Working code examples of python-apt

i downloaded the source code of python-apt from here : https://github.com/excid3/python-apt In this source code, in directory doc/examples , some python codes are exist. I thought that i could run ...
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17 views

How to traverse all packages using python-apt

i want to implement a python code which prints all packages using python-apt in ubuntu. I searched about it, looked at python apt documentation in the link, ...
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1answer
24 views

From terminal how can I upgrade a particular software only [duplicate]

Using Xubunutu 140.04 LTS I want to upgrade a particular software only without upgrading the rest of the system. How can this be done from terminal, To update entire system I understand that I need ...
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1answer
38 views

Juju charm, what to do when you can't reach archive.ubuntu.com?

I'm writing a Juju Charm for StrongSwan to auto-configure a VPN server. One of the things I noticed with the CharmHelpers code is that the apt_update() function only checks for DPKG lock. I want to ...
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2answers
37 views

How to remove a apt-key which I have added?

I added a key like this: wget -q -O - https://jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add - sudo sh -c 'echo deb http://pkg.jenkins-ci.org/debian binary/ > ...
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1answer
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apt-cache search <package> doesn't detected package built from source and installed using dpkg -i

Because I wanted to install some packages after building them with g++-4.9, I did: /usr/local/src $ sudo apt-get source --compile libmysql++3 /usr/local/src $ sudo apt-get souce --compile ...
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1answer
33 views

how to uninstall emacs from command line?

I have ubuntu 12.04 I installed emacs using below commands. $ apt-get update $ apt-get install emacs Then, as expected, I could find emacs while searching in dash. Next I wanted to uninstall ...
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1answer
38 views

Unable to install or remove package

This specific message is displayed in the terminal $ sudo apt-get remove bio-linux-cdbfasta Reading package lists... Done Building dependency tree Reading state information... Done The ...
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59 views

Error installing GIT on Ubuntu 14.04

I need to install git on ubuntu 14.04 but I am getting an error after sudo apt-get install git: Reading package lists... Done Building dependency tree Reading state information... Done The ...
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2answers
82 views

Unable to locate package perl(Net: & IO::Socket:)

When i am trying to use following command it shows following error root@RR-DE-NMS-1:~# apt-get install 'perl(Net::SSLeay)' 'perl(IO::Socket::SSL)' Reading package lists... Done Building dependency ...
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Installing LLVM 3.5 suffixes all the executables and folders with the version (-3.5)

as the title says I installed LLVM 3.5 on Ubuntu 14.10 using the following commands: - sudo sh -c "echo 'deb http://llvm.org/apt/precise/ llvm-toolchain-precise-3.5 main' >> ...
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HEP latex package in 14.04

I want to write some particle name in latex. The standard notation for the particle does not working in my tex studio. How I add the HEP package???
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46 views

apt-get install problem with MySQL Ubuntu 12.04 [duplicate]

I have a working system with Ubuntu 12.04 and LAMP For some reason i am unable to install any new software on system. Every time I try to use apt-get install i get the following error: Example: ...
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1answer
83 views

Could not execute 'gpgv' to verify signature (is gpgv installed?)

I'm sorry in advance if I am leaving out critical information, or if I don't follow posting rules. I am pretty new to all this. I recently installed Ubuntu 14.0.4 as a dual boot with windows 7. I ran ...
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2answers
189 views

Dependency problems with wkhtmltopdf when trying to install latest version

I'm trying to install the latest version of wkhtmltopdf on an ubuntu server 12.04. apt-get install wkhtmltopdf only installs version 0.9.9 and I need the latest version, 0.12.2.1. I was having trouble ...