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Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

PROBLEM: Some times we get the following error while trying yo install software using apt-get or synaptic packaging manager. 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 another process using it? How can we resolve this? SOLUTION:  The problem occurs if we are running another applications like synaptic using the directory. So, if this is the case close the applications and try run the command again. You will also get this message if you forget to use  sudo   when executing an  apt  command. You can use  sudo lsof /var/lib/dpkg/lock  to find the process that owns the lock file Then try to kill the process to remove the lock. **WARNING** This should be used as last resort. If you use this carelessly you can end up with a broken system. You can delete the lock file with the following command: sudo rm /var/lib/apt/lists/lock You may also need to...
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Cleaning up ubuntu

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Ubuntu and other flavors of Linux don't really need cleaning up as you might do in Windows. Over time, of course, you might accumulate things on your computer that you might not wish to keep - old documents, no-longer-used programs, etc. - but there is nothing really akin to the Windows registry that simply builds up clutter that slows your computer. The old stuff you save won't slow down your computer: it will probably run as fast a year from now as it does today. To clean some packages laying around Run: sudo apt-get autoremove sudo apt-get clean sudo apt-get autoclean But you can do the following to clean up your computer: Installing ubuntu tweak: sudo add-apt-repository ppa:tualatrix/next sudo apt-get update sudo apt-get install ubuntu-tweak and then run ubuntu-tweak and there is an option called Janitor which is used for cleaning as seen in the picture: BLEACHBIT:   BleachBit  deletes unnecessary files to free valuable disk space, maintain privacy, and r...
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How to setup DSL connection?

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PROBLEM: How can I setup an internet connection through LAN over PPPOE (wired DSL or landline) connection? SOLUTION: You can setup your internet connection using two methods. One is by using the GUI and other is using the terminal (command line). USING THE GUI : This method is for configuring your DSL connection using the GUI method. First open the dash and search for network connections. Click on the network connections icon shown in the search results. Now a new window will open. Now click the add button. Now a new window will open. Select DSL from the options. .Now click on create . A new window will open. Now type your username and password  that your ISP gave you. Now click on save. You can even choose to connect automatically in the general tab. Using the command line (terminal): Open a terminal and type the following: sudo ppoeconf A text-based menu program will guide you through the next steps, which are: Confirm that your Ethernet card is detected. Enter your username (...
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