Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

I am getting this error whenever I install any package from the terminal. What is wrong?

apt-get install gnome-tweak-tool
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package gnome-tweak-tool is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'gnome-tweak-tool' has no installation candidate
share|improve this question

closed as off-topic by Ron, Fabby, karel, David Foerster, Pilot6 Aug 22 at 9:50

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – karel, David Foerster, Pilot6
If this question can be reworded to fit the rules in the help center, please edit the question.

it's because the package name is incorrect! That's what that message means. try sudo apt-get install htop –  Alvar Mar 19 '14 at 13:17
What version of Ubuntu are you using? Is this the only package which produces this error? @Alvar That's the correct name for GNOME Tweak Tool's package :-) –  edwin Mar 19 '14 at 13:18
Try to review/reset your sources list, then run 'apt-get update' before checking again –  Ahmadgeo Mar 19 '14 at 14:28
What version of Ubuntu are you using? –  Alvar Mar 19 '14 at 14:58
I'm voting to close this question as off-topic because OP is not using Ubuntu. –  Ron Aug 21 at 14:43

1 Answer 1

Use the command sequence below, to reset your APT-GET sources list

sudo -i
apt-get clean
cd /var/lib/apt
mv lists lists.old
mkdir -p lists/partial
apt-get clean
apt-key update
apt-get update
apt-get install gnome-tweak-tool
share|improve this answer
What will this do and why would it help? –  Alvar Mar 19 '14 at 14:59
This will reset your APT-GET sources list. –  byaruhaf Mar 19 '14 at 15:01
No it doesn't. The package source list is located in /etc/apt/. /var/lib/apt/lists holds the lists of known packages retrieved from all configured sources during the last apt-get update. It may help to delete that in some rare circumstances and has no important adverse effects, but usually apt-get update is enough. All the other things you mention aside from rm -rf /var/lib/apt/lists && mkdir -p /var/lib/apt/lists/partial && apt-get update are unnecessary voodoo in relation to OP's issue. –  David Foerster Oct 26 '14 at 14:32

Not the answer you're looking for? Browse other questions tagged or ask your own question.