open source softwares configurations

ubuntu@ubuntu:/usr/src/linux-headers-3.5.0-23-generic$ sudo apt-get install ccze [sudo] password for ubuntu: 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?       You can delete the lock file with the following command: sudo rm /var/lib/apt/lists/lock     You may also need to delete the lock file in the cache directory     sudo rm /var/cache/apt/archives/lock

  Another Big Milestone – Let's Encrypt is now offering Free HTTPS certificates to everyone. Let's Encrypt has opened to the public, allowing anyone to obtain Free SSL/TLS ( Secure Socket Layer/Transport Layer Security ) certificates for their web servers and to set up HTTPS websites in a few simple steps ( mentioned below ). Let's Encrypt – an initiative run by the Internet Security Research Group (ISRG) – is a new, free, and open certificate authority recognized by all major browsers , including Google's Chrome, Mozilla's Firefox and Microsoft's Internet Explorer. The Free SSL Certification Authority is now in public beta after testing a trial among a select group of volunteers. Why Let's Encrypt? Let's Encrypt promised to offer a certificate authority (CA) which is: Free – no charge for HTTPS certs. Automatic – the installation, configuration as well as the renewal of the certificates do not ...

Go to Adobe's Flash Player .   Extract libflashplayer.so from the file you downloaded with the command tar -zxvf install_flash_player_"version"_linux."processor".tar.gz .   copy the extracted file, libflashplayer.so , to your Firefox installation directory's plugins sub-directory.  For example, if Firefox is installed in /usr/lib/mozilla, use the command sudo cp libflashplayer.so   /usr/lib/mozilla/plugins and then enter your super user password when prompted.   You be good to go