APT (Advanced Packaging Tool) is the standard software package management system for Debian and its derivatives.

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Reset dselect selection before package installation

I was looking through the list of packages with dselect, but pressed Return twice by mistake, thereby making it confirm and quit the [S]elect option. When I go to the [I]nstall option, it's now ...
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How to run a command before download with apt-get?

How can I run a command before apt-get starts to download a package? I know about the dpkg pre-invoke hook ( hook a script to apt-get ), but that seems to be run after the download. $ apt-get update ...
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How do I know when I installed package FOO

I was wondering if I installed 'Tor' on my Ubuntu 14.04 or it was shipped as a default package since I hadn't remembered installation by myself. So what's the way to find out if a package is ...
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How can I see when package has been upgraded?

Is there a way to see the upgrade history with date with some program e.g. apt? I want to know when exactly I upgraded security relevant packages the last time and the time before that... Thanks a ...
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How can I upgrade MySQL in Debian using apt-get?

I'm using the Turnkey Linux virtual machine. The version of Debian in there is apparently on the "Wheezy" upgrade path (if that's what you call it). I'm not completely comfortable with Linux, as you ...
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What are the numbers after the version in the output of apt-cache policy?

This is the output of apt-cache policy firefox firefox: Installed: 26.0~linuxmint1+lmde Candidate: 26.0~linuxmint1+lmde Version table: *** 26.0~linuxmint1+lmde 0 500 ...
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How to stop `apt-get` complaining about unmet dependencies when I manually install the software from source? [duplicate]

I have been installing some applications onto my Debian system. Now there are some that have dependencies that I do not want installed with the applications at the moment. I have managed this by using ...
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Yum and recommended/suggested packages

I'd like to install a software package on my Fedora System, but it has a lot of unreasonable dependencies (which I know for sure they are not actually required). I used to work on Debian, where ...
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How do I fix broken libxml2-dev dependency on Debian using apt?

When I run sudo apt-get upgrade on my Debian Squeeze install, I get the following error: You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: ...
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Fix held broken packages on debian?

I want to begin exploring moving myself away from google apps, because it's expensive, and it looks like citadel has all of the groupware functions I need. So I am trying to install citadel-suite ...
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Debian: Is it possible/safe to install packages from an older version of the repository?

I'm currently running Debian testing (Wheezy) and am trying to get SCIM working. I want to install the scim-pinyin package, but there is no such package available in the testing repository, although ...
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apt-get via ssh-tunnel if only port 22 is allowed

I have a server which has only access to the outer world via port 22 (for the use of ssh from the server to other computers). I want to install some packages via apt-get on this server. Can I achive ...
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127 views

To not autoremove something

I have uninstalled my distro's (Debian Wheezy) package of torchat, and use a newer version I've built myself. Since removing the package apt-get wants me to autoremove something which the software ...
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Command & binary exists but cannot be executed

I transfered /etc/* files from one Linux server to another and now I have a strange error. Both are Debian Squeeze. When I run a command, e.g. ssh, I get an error: bash: /usr/bin/ssh: No such file ...
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How do I install mod_pagespeed using apt-get?

I remember seeing an article at one time on how to do this, but now I can't find it. I have seen other install directions. I want to make sure I can easily update it via apt.
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Force apt-get to prompt yes/no

Is there a way to force apt-get to display yes/no prompt? A --force-yes option exists, but there seems to be no --force-prompt or similar option. If you attempt to install a package that has all ...
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499 views

Firefox circular-dependency hell on Linux Mint 13

Having difficulty re-installing Firefox, after an installation to resolve places.sqlite issues. It appears that I'm trapped in circular dependency hell. Need to resolve firefox dependency hell to ...
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131 views

Why doesn't wicd install its daemon?

Yet again, I've found myself banging my head against the wall after having issues with wicd (the most consistenly buggy piece of widely-used software I've ever used). This time, after installing ...
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Why there is no https transport for debian apt tool?

With all paranoia that has come with NSA revelations and everything, I'm wondering why debian package installation mechanism does not support HTTPS for its transport, let alone using it by default. I ...
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Upgrading packages automatically

I'm fairly new to using servers (debian 7) and I'm currently running cron-apt to e-mail me when there are new upgrades available. Is the following command safe to run when new upgrades are shown? ...
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1k views

How to list currently not installed packages?

I'd like to output a list of all, currently not installed, packages (they are visible in Synaptic for example) using only shell commands. How do I do this?
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Is it possible to determine what is inside Debian package without installing it?

I need a markdown library for development - based on package names I could not understand which one I should install... den@playground:~$ sudo aptitude search markdown p html2markdown ...
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Is it necessary to reboot after a kernel upgrade (via APT)?

I have been wondering this for quite a while. Let's say that you have a Debian server that you keep updated via APT. Usually (every 1-2 months) there are some kernel updates, which will update the ...
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how can I change what the command “apt-get update” looks for when executing the update?

Forgive my incompetence I am still new to GNU/Linux. I use Debian wheezy. When I type apt-get update I get this at the end W: Failed to fetch ...
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What information do I need to solve an APT dependency issue?

I've seen several times people with unmet dependencies, which apt-get doesn't tells straightforward what's the problem, like this one: The following packages have unmet dependencies: ...
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Aptitude on Debian 6.0.4 “media change” to CD ROM

I've just installed Debian 6.0.4 on VirtualBox, and I'm trying to install g++. So, into the terminal I typed: aptitude install build-essential But it's trying to get the package from disk: Media ...
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How to install Debian packages via internet instead of from a CD?

When I enter root to install sudo on Debian Testing I type this: apt-get install sudo Which returns this: Reading package lists... Done Building dependency tree Reading state information... ...
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dpkg cannot find ldconfig/start-stop-daemon in the PATH variable

I was trying to install bsd-mailx utility the package got installed however I am wondering about the error. This is the error I get: Preconfiguring packages ... dpkg: warning: 'ldconfig' not found ...
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Why did adding the Debian testing repository create so many package dependencies?

I have Debian 6.0.4, and I'm running an outdated Geany text editor package. There's no newer version available in the current stable repository, so I added testing packages to sources.list: #debian ...
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How to prevent prompt that ask to restart services when installing libpq-dev

I want to install libpq-dev on my Vagrant machine. I install it with $ apt-get install -y libpq-dev During installation a prompt appears which asks if it's allowed to restart some services ...
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Debian: keep custom changes in initscript

I had to modify the initscript for Postfix /etc/init.d/postfix to customize it for my special needs. Now I want to ensure, that in case of the postfix package being updated in the future (I am running ...
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How does AptConf work in Debian Wheezy?

As far as I understand, the /etc/apt/apt.conf file of Squeeze has been broken into separate files within the /etc/apt/apt.conf.d/ directory in Wheezy. The debian wiki has not been updated yet and it ...
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Why do I constantly have to update my apt cache?

When I want to install a new package, I'm usually greeted with a response like: oliver@cloud:~$ sudo apt-get install unison Reading package lists... Done Building dependency tree Reading state ...
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apt python error prevents me from resolving dependency problems for apt-get install

On Debian 6 servers dependency issues are preventing me from installing nis (or any package). When I try to resolve that issue I get a python error. How do I get past this issue and re-gain the ...
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How to run a command after apt-get upgrade

Recently I came across the nice checkrestart tool, that checks if running processes use an outdated version of a recently updated library and would need a restart to load them with the updated lib. At ...
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When does “apt-get install” ask me to confirm whether I want to continue or not?

Sometimes "apt-get install" asks me "Do you want to continue [Y/n]?": root@T43:~# apt-get install chmsee Reading package lists... Done Building dependency tree Reading state information... ...
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How does apt-get deal with multiple sources?

Let's say Ubuntu's repositories features a package. I install that package using apt-get. I then add an additional source (with add-apt-repository) that lists either a newer or older version of the ...
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Using apt or aptitude to get version information about an uninstalled package?

I'm looking to install a package, but I'd like to make sure that I can't get a more recent version than, e.g., a PPA. Is there an aptitude or apt-get command that will enable me to input a package ...
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Why does apt-get think packages “are no longer required”

I ran apt-get install raspberrypi-net-mods on my Raspberry Pi running Raspbian and got the following message:- The following packages were automatically installed and are no longer required: git ...
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How to install a specific debian package

I want to install a particular version which is not available from apt-get utility but is available from https://packages.debian.org (like https://packages.debian.org/wheezy-backports/exfat-fuse for ...
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What exactly does the --names-only option of apt-cache do?

According to the manual, it search regex... search performs a full text search on all available package lists for the POSIX regex pattern given, see regex(7). It searches the ...
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Can removed Debian packages have leftover files?

I noticed a weird thing in my /etc/init.d files and tried to look a bit what was going on. Here's my problem: # apt-file search /etc/init.d/minissdpd minissdpd: /etc/init.d/minissdpd # ...
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Why am I getting so many hits searching for “git” in the apt cache?

When I give the following command: apt-cache search git | wc -l I get the answer 756. How can I list just the half-dozen or so apps associated with git?
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Automate installation of VirtualBox Guest Additions via command-line

How can I install VirtualBox Guest Additions from a Bash script, in a unattended way? Whenever I run apt-get -y install dkms virtualbox-guest-dkms from the terminal I'm presented with a interactive ...
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What package managers do popular Unix Distributions Use? [closed]

I am creating a Script and I need to know what package manager each Popular Unix Distribution Uses (especially those distros that are commonly-used for Servers)... I mean: Debian uses apt-get Fedora ...
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upgrade xdebug without using apt?

I'm running debian 5.0.6 and have installed xdebug 2.0.3 via aptitude. Now I want to install PHPUnit, and when trying to do it through pear, I get the error that PHPUnit wants a more recent xdebug ...
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Get kernel source: apt-get install vs apt-get source

I'm looking forward to download a Linux Kernel to get to know how to modify it and how to compile it. I am using Debian distribution and I'm interested in the Debian-modified Linux Kernel rather than ...
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I can't install new packages and can't update and upgrade

I'm trying to install some program on Ubuntu, but when I try it I got the following error.- E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock ...
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How to list all aptitude user tags or the user tags for a package?

I'm in a bit of a pickle. Following my own counsel I started using user-tags when working on projects, but now I don't remember how I called some of these tags and this cancels their usefulness. Is ...
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How can I reverse the effect of apt-get build-dep <package>?

When I run: apt-get build-dep <package> privileged it installs the build dependencies for <package>. Now, I know that I can use apt-cache depends <package> to see binary ...