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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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How to install OpenVAS 7 in Ubuntu

OpenVAS is a framework of several services and tools offering a comprehensive and powerful vulnerability scanning and vulnerability management solution. This is a guide for installing OpenVAS in Ubuntu.  STEP 1: First we need to prepare our system for installation of OpenVAS. Open a terminal and type the following command: sudo apt-get install build-essential bison flex cmake pkg-config libglib2.0-0 libglib2.0-dev libgnutls26 libgnutls-dev libpcap0.8 libpcap0.8-dev libgpgme11 libgpgme11-dev doxygen libuuid1 uuid-dev sqlfairy xmltoman libsqlite3-0 libsqlite3-dev libxml2-dev libxslt1.1 libxslt1-dev xsltproc libmicrohttpd-dev libldap-2.4-2 libldap2-dev STEP 2: Now we need to download the OpenVAS source packages from the OpenVAS website. You can download it from the the website or you can use the terminal to download the files using the following commands:   mkdir openvas-src cd openvas-src/ wget http://wald.intevation.org/frs/download.php/1638/openvas-libraries-7.0...
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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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