Questions tagged [apt]
APT is short for 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 commands should use this tag.
2,752
questions
669
votes
14
answers
1.5m
views
How do I resolve unmet dependencies after adding a PPA?
Occasionally, when I'm installing stuff, I get an error like the following:
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the ...
- 60.9k
380
votes
16
answers
1.5m
views
Unable to correct problems, you have held broken packages
After upgrading from 10.04 to 12.04 I am trying to install different packages.
For instance ia32-libs and skype (4.0).
When trying to install these, I am getting the 'Unable to correct problems, you ...
- 3,825
213
votes
5
answers
776k
views
What can I do if a repository/PPA does not have a Release file?
When updating, I get the following error message:
W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release' does not have a Release file.
Here, I find another statement ...
- 2,403
314
votes
9
answers
756k
views
How can I fix a 404 Error when using a PPA or updating my package lists?
PPA seems to be constantly offline. Whenever I use sudo apt-get update, this error is shown:
W: Failed to fetch http://ppa.launchpad.net/ 404 Not Found
How do I fix these errors?
- 3,141
204
votes
6
answers
261k
views
dpkg error: "trying to overwrite file, which is also in..."
For example:
$ sudo apt-get install curl
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The ...
- 2,569
619
votes
15
answers
1.3m
views
How do I fix the GPG error "NO_PUBKEY"?
I added some extra repositories with the Software Sources program. But when I reload the package database, I get an error like the following:
W: GPG error: http://ppa.launchpad.net trusty InRelease:...
- 16.3k
1174
votes
25
answers
3.6m
views
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
I get this error when trying to use apt-get:
E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/) is ...
89
votes
9
answers
496k
views
How do I remove a malformed line from my sources.list?
I have unistalled and reinstalled the Ubuntu Software Center as per info I found in a similar thread and I got the same response about line 91 or something like that.
I just tried to upload a screen ...
- 899
1639
votes
27
answers
2.0m
views
How can PPAs be removed?
I've added many PPAs using the add-apt-repository command. Is there a simple way to remove these PPAs? I've checked in /etc/apt/sources.list for the appropriate deb lines but they aren't there.
This ...
- 17.4k
384
votes
10
answers
390k
views
How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
The computer gave me this output in a window:
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_natty_main_binary-...
user12250
366
votes
7
answers
3.0m
views
"Unable to locate package" while trying to install packages with APT
When I try to install any package through the command line, I get an error.
$ sudo apt-get install <package>
Reading package lists... Done
Building dependency tree
Reading state ...
- 3,783
450
votes
22
answers
457k
views
Trouble downloading packages list due to a "Hash sum mismatch" error
When I check for updates, I get a "Failed To Download Repository Information" error.
This is what comes up under details:
W: Failed to fetch gzip:/var/lib/apt/lists/partial/us.archive.ubuntu....
- 12.8k
300
votes
8
answers
416k
views
How can I fix apt error "W: Target Packages ... is configured multiple times"?
I just installed Ubuntu Gnome 16.04. I told it to save my documents - which worked. Some software had to be reinstalled. Now when I run sudo apt-get update I see this:
W: Target Packages (main/binary-...
- 33k
238
votes
18
answers
1.3m
views
apt-get update fails to fetch files, “Temporary failure resolving …” error
Err http://archive.canonical.com natty InRelease
Err http://security.ubuntu.com oneiric-security InRelease
Err http://extras.ubuntu.com natty InRelease
...
- 2,513
140
votes
7
answers
1.2m
views
Permission denied, are you root?
I get this error whenever I try to install programs using the terminal:
home@ubuntu:~$ apt-get install myunity
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable ...
- 1,586
39
votes
3
answers
135k
views
How do I fix this "E: Type '*' is not known on line * in source list ..." update error?
Every once in a while I see users having issues to update due to errors like this:
E:Type 'ain' is not known on line 1 in source list /etc/apt/sources.list.d/some-ppa.list'
with varying types/line ...
- 65.1k
10
votes
1
answer
13k
views
Package dbus is not configured yet
While attempting to upgrade (sudo apt-get upgrade) Ubuntu 12.04, I had a pair of packages that would throw the following apt-get install errors for the dbus dependency:
dpkg: error processing dbus (--...
- 433
168
votes
18
answers
202k
views
My /boot partition hit 100% and now I can't upgrade. Can't remove old kernels to make room
My first issue was when I tried to apt-get update or apt-get upgrade. On upgrade I get the following error:
You might want to run 'apt-get -f install' to correct these.
The following packages have ...
- 1,780
2650
votes
25
answers
5.4m
views
How to list all installed packages
I'd like to output a list of all installed packages into a text file so that I can review it and bulk-install on another system. How would I do this?
- 57.5k
233
votes
8
answers
365k
views
How can I get apt to use a mirror close to me, or choose a faster mirror?
Downloading from the main Ubuntu archive is slow even when it's not release day, how can I get apt-get to automatically use a mirror that is close to me?
- 18.6k
71
votes
7
answers
136k
views
Apt/Synaptic needs to reinstall package but can't find the archive for it
Running Synaptic I get the following error message:
E: The package hl1440lpr needs to be reinstalled, but I can't find an archive for it.
E: Internal error opening cache (1). Please report.
Upon ...
- 731
182
votes
6
answers
235k
views
"debconf: DbDriver "config": config.dat is locked by another process: Resource temporarily unavailable" while installing packages
I'm trying to install the flashybrid but when I enter the apt-get install flashybrid command, I get this error:
root@user-desktop:/home/user# apt-get install flashybrid
Reading package lists... Done
...
- 1,821
128
votes
3
answers
609k
views
What does "Package <package> has no installation candidate" mean?
What does the above Error mean? What is an installation candidate?
I was trying to do
sudo apt-get install munin-memcached
and I get this message:
Reading package lists... Done
Building ...
- 16.3k
1723
votes
29
answers
1.9m
views
"The following packages have been kept back:" Why and how do I solve it?
I just added a PPA repository for the development version of the GIMP, but I get this error:
$ apt-get update && apt-get upgrade
...
The following packages have been kept back:
gimp gimp-...
- 23.9k
132
votes
6
answers
101k
views
What is the easiest way to resolve apt-get BADSIG GPG errors?
I frequently cross this issue, and always have to google for an answer. Does anyone have a permanent fix for BADSIG errors from apt-get?
W: GPG error:
http://download.virtualbox.org lucid
...
- 5,918
405
votes
5
answers
345k
views
How can I accept the Microsoft EULA agreement for ttf-mscorefonts-installer?
After a recent update, ttf-mscorefonts-installer prompted me to accept its license agreement.
┌─────────────────┤ Configuring ttf-mscorefonts-installer ├─────────────────┐
│ ...
- 4,573
24
votes
8
answers
58k
views
Failed to download repository information due to missing CDROM
When updating I got this error message:
W:Failed to fetch cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)/dists/oneiric/main/binary-i386/Packages Please use apt-cdrom to make this ...
189
votes
4
answers
639k
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 ...
- 1,993
194
votes
25
answers
369k
views
How to fix "W: Duplicate sources.list entry"?
I keep getting this warning whenever I try to run sudo apt-get update.
W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages (/var/lib/apt/lists/archive....
- 3,190
90
votes
7
answers
393k
views
Package system is broken. How to fix it?
I just recently bought an arduino and requires gcc-avr/avrdude to compile the software. I installed avr for another microprocessor component a while ago but is obviously an outdated version (gcc ...
- 1,000
539
votes
6
answers
872k
views
What is "dist-upgrade" and why does it upgrade more than "upgrade"?
I was wondering why upgrade sometimes doesn't want to upgrade certain parts of the system, while dist-upgrade does. Here's an example after running apt-get upgrade:
apt-get upgrade:
rimmer@rimmer-...
- 8,888
279
votes
5
answers
808k
views
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
I'm trying to run this command in the terminal:
sudo apt install software-properties-common
This is the error message I get:
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource ...
- 2,791
9
votes
2
answers
8k
views
Can't upgrade/update ubuntu 18.04 as apt/dpkg error is showing up
I have been using ubuntu 18.04 for quite a while now and it was working fine until this morning when I turned my pc on and used terminal for updates.
This is the output of sudo apt upgrade
Reading ...
- 93
704
votes
9
answers
2.1m
views
What does "sudo apt-get update" do?
I am wondering what sudo apt-get update does?
What does it update?
- 11k
150
votes
7
answers
177k
views
How can I restore configuration files?
I would like to restore LightDM to its default state, because for some reason
/etc/lightdm/unity-greeter.conf is now an empty file.
Deleting /etc/lightdm/unity-greeter.conf and then running sudo apt-...
- 59.7k
4
votes
1
answer
19k
views
Dependency errors prevent all APT commands from running, "Package libappstream-glib8:amd64 is not configured yet"
I'm using Ubuntu 16.04 and I've been getting an error of Sub-process /usr/bin/dpkg returned an error code when trying to install new apps or update the system. This seems to be happening since i ...
- 43
76
votes
2
answers
20k
views
What are phased updates, and why does Ubuntu use them?
So I ran into that weird "packages being held back" problem while updating my system using apt. After some research, it appears to be the result of "phased updates".
What are ...
- 3,439
26
votes
7
answers
27k
views
How can I tell if a CVE has been fixed in Ubuntu's repositories?
Today a couple of buffer overflows in NTP were announced 1, 2. It looks like updating my system to fix these issues is in order.
How can I find out if they have been fixed in the Ubuntu repositories,...
- 371
134
votes
4
answers
136k
views
How to fix apt: Signature by key uses weak digest algorithm (SHA1)?
I started setting up by adding repositories and then went to run a sudo apt-get update again before I started installing other software, and I get the Signature key lines and it stops. So it ...
- 1,441
106
votes
7
answers
76k
views
No more updates for Google Chrome 32-bit
I am using Google Chrome 48.0 32-bit. Today when I launched Google Chrome, I got this message:
This computer will soon stop receiving Google Chrome updates because
this Linux system will no longer ...
- 15.4k
179
votes
8
answers
139k
views
What commands (exactly) should replace the deprecated apt-key?
Setting up keys for a local repository on a new ubuntu 20.10 virtual machine, I got a message that apt-key add was deprecated and I should read the apt-key(8) man page. The apt-key(8) man page is a ...
- 2,347
10
votes
6
answers
20k
views
Problem with sudo apt update in Ubuntu 18.04: Post-Invoke-Success if /usr/bin/test -w /var/lib/command-not-found/
The terminal gave me these errors when updating the software with sudo apt update.
Hit:1 http://it.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://it.archive.ubuntu.com/ubuntu bionic-...
59
votes
3
answers
205k
views
Problem with sudo apt get update: The repository cdrom... does not have a Release file
Every time I try update (using sudo apt-get update) my Ubuntu I get this problem:
W: The repository 'cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1) xenial Release' does not have ...
- 693
28
votes
10
answers
117k
views
Got NODATA issue: 'NODATA' (does the network require authentication?)
I can use my mobile broadband to access Internet with Firefox but when I want to install any package from terminal or make 'apt-get update' command I got the following error:
got 'NODATA' (does the ...
- 463
331
votes
9
answers
373k
views
Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'xxx' doesn't support architecture 'i386'
Getting below error message while issuing :
sudo apt-get update
Get:1 http://us.archive.ubuntu.com/ubuntu xenial InRelease [95.8 kB]
Ign:2 http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.2 ...
- 16.1k
201
votes
6
answers
217k
views
How do I get and modify the source code of packages installed through apt-get?
I am assuming that all application installed through apt-get are open source; but for those that are available in that manner, where can I get the source code for these applications as well as update ...
- 34.5k
197
votes
8
answers
338k
views
apt-key deprecation warning when updating system: "Key is stored in legacy trusted.gpg keyring"
Recently I've noticed some issues when running apt where the system will warn me of a keyring deprecation:
Reading package lists... Done
Building dependency tree... Done
Reading state information... ...
- 22.7k
828
votes
4
answers
553k
views
What is the difference between apt and apt-get?
I read about the new fancy progress bar which was added to apt 1.0 in Softpedia and how to enable it here. However on running sudo apt-get update, I did not see the fancy progress bars. On reading the ...
- 12.7k
55
votes
3
answers
233k
views
Could not get lock /var/lib/apt/lists/lock
when I try to apt-get update I'm getting the below error,
E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
- 551
22
votes
2
answers
73k
views
Restore default apt repositories in sources.list from command line
I am looking for the best method to restore /etc/apt/sources.list to default from the command line.
Is there no way to reference the source code of the package which generates this file or something ...
- 323