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First and foremost, check your Internet connection. I usually try pinging Google. "I already tried that, Internet's fine..." You should consider using Synaptic Package Manager as an alternative to Ubuntu Software Center. Ubuntu Software Center is mainly meant for people who are transitioning from a traditional desktop OS... Mac OS X in this specific case. ...


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You might be having problems with your "repositories." Feel free to Google them. You need a few common, foundational repositories to be able to install most of the software. For the video and codec parts, run this: sudo apt-get install ubuntu-restricted-extras once you can install things. Also, if you're having problems in installing anything, like even ...


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Open the terminal and type: sudo apt-get install devscripts devscripts are scripts to make the life of a Debian Package maintainer easier. dpkg-depcheck, dpkg-genbuilddeps: determine the packages used during the build of a Debian package; useful for determining the Build-Depends control field needed. dependencies/recommendations for the dpkg-depcheck ...


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In order to support install from the local repository , the line in /etc/apt/mirror.list should be "deb-amd64 http://archive.ubuntu.com/ubuntu trusty main main/debian-installer restricted restricted/debian-installer" .


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Open a terminal and type the following commands sudo apt-get update sudo apt-get autoremove sudo apt-get autoclean sudo apt-get upgrade Select y to install any upgrades and please post any errors. Dude, I know how to fix that error . . . Use the following commands to edit the /etc/apt/sources.list file: sudo nano /etc/apt/sources.list Now, place a # ...


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The Ambiance theme is maintained in the light-themes package. You can find the source of the package in launchpad. Note: it's not a git repo but a bzr repo; you can branch the project this way: sudo apt-get install bzr bzr branch lp:ubuntu-themes Alternatively a quick way to get the source is: apt-get source light-themes Update: How to convert the ...


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12.10 is already beyond end of life. But t answer your question, in general, unless you have a great deal of experience with apt, it is a bad idea to mix repositories. In your case, the packages in 12.04 are almost certainly going to be older then the packages in 12.10, and so it will do you no good. In theory you can mix repositories using pinning, see ...


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Raring went End of Life some time ago. All releases of Ubuntu have specific End of Life dates. The wiki contains a page of all Releases, both current releases and releases that have gone End of Life, where they are no longer supported, and no longer should be used. It is infinitely important that you use a version of Ubuntu that is still supported so that ...


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If you're using 14.04 (per the revised question)... The ppa:kubuntu-ppa/next PPA has no Utopic build. It's designed for the development version of Ubuntu and nothing else. Remove it: sudo apt-add-repository -r ppa:kubuntu-ppa/next By extension the kubuntu-plasma5-desktop package only lives in this PPA so you're not going to be able to install that yet. ...


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That means in your sources.list is an URL entry that cannot be accessed (403 Forbidden). You can remove the line from your sources.list: Open the file /etc/apt/sources.list with an editor and look for the lines that look like this: deb http://deb.torproject.org/torproject.org/dists/<precise>/main/binary-i386 Now comment them out. Add a # before ...


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I believe this is by design. The origin section allows you to view packages by repository (origin). Source: http://www.howtogeek.com/118665/10-package-management-operations-you-need-synaptic-for-on-ubuntu/ Just because you are no longer using it doesn't mean it doesn't exist....


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Reinstall the Synaptics package manager: sudo apt-get --purge autoremove synaptic && sudo apt-get install synaptic Then update the system: sudo apt-get update Then reboot.


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PPAs do not belong to the main Ubuntu archive, no. However, PPAs only have a main archive, as they are not part of the Ubuntu archive itself. They do not have universe or multiverse. Nothing in a PPA is supported by officially supported Ubuntu, generally speaking. However, the Launchpad Terms of Service also prohibit you from uploading any proprietary ...


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try sudo apt-get remove w3af it should remove that package and then everything would be normal. `


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I think the Launchpad bug https://launchpad.net/bugs/1280109 includes as much as there is of an answer to your question. Please feel free to add a comment to that bug report.


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Okay, I've tried this method and it works. :-) For the next person who stumbles on this: Step 1: sudo add-apt-repository ppa:(name of PPA) Step 2: sudo dpkg --add-architecture amd64 Step 3: sudo apt-get update Step 4: apt-cache policy (package name) (Just to make sure it's there.) Step 5: sudo apt-get source -b (package name) Step 6: sudo dpkg ...


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APT refers to these packages as "obsolete". Evidently there is no direct way to list these, but you could do: aptitude search '~o' Or alternatively: apt-show-versions | grep 'No available version' Source: How do I get a list of obsolete packages? If you want a GUI tool you can do this with Synaptic by using the built-in "local or obsolete" filter.


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Type apt-cache policy libreoffice You should get output that looks something like this: libreoffice: Installed: 1:4.2.4-0ubuntu2 Candidate: 1:4.2.4-0ubuntu2 Version table: *** 1:4.2.4-0ubuntu2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages 500 http://security.ubuntu.com/ubuntu/ ...


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The command unset a shell builtin of bash - so it's in the man page of bash. Also, you get a shorter description with the command help - often help unset may explain what you need. To find it in the man page, find it in the section "SHELL BUILTIN COMMANDS" manually, or search for unset \[. Or, if you want, all in one command, for this special case: man ...


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first you need to uninstall the present libjansson4. sudo apt-get remove libjansson4 If you are having a problem removing it, run: sudo dpkg -r libjansson4 If it is succeeded or not, then run: gksudo gedit /var/lib/dpkg/status In the resulting Gedit , remove the whole section starts with Package : libjansson4 Then save the file and close. Then ...


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As set and unset are shell builtins you need to use the help command to get their detailed help: $ help unset unset: unset [-f] [-v] [-n] [name ...] Unset values and attributes of shell variables and functions. For each NAME, remove the corresponding variable or function. Options: -f treat each NAME as a shell function -v treat each NAME as a ...


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Refer ss64: set Manipulate shell variables and functions. Syntax set [--abBCefhHkmnpPtuvx] [-o option] [argument ...] If no options or arguments are supplied, set displays the names and values of all shell variables and functions, sorted according to the current locale, in a format that may be reused as input. When options are supplied, they set or ...


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set and unset is not third party binaries. They are Shell Builtins. This means that they are 'inside' shell. If you are using bash, you can run type to check it. $ type set set is a shell builtin $ type unset unset is a shell builtin Quote from Bash Reference: Builtin commands are contained within the shell itself. When the name of a builtin ...


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It turns out that I had the intermediate certificates out of order. Web browsers and ssllabs were fine with that but, it appears that apt cares about the ordering of the intermediate certificates.


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Use the --remove flag, similar to how the PPA was added: sudo add-apt-repository --remove ppa:whatever/ppa You can also remove PPAs by deleting the .list files from /etc/apt/sources.list.d directory.


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You can use --remove: sudo add-apt-repository --remove ppa:<repo> Or you can remove it by deleting the .list files from /etc/apt/sources.list.d directory.



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