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Look for OpenJDK in APT sudo apt search openjdk Install OpenJDK 8 sudo apt-get install openjdk-8-jdk Add the proper GPG key for ElasticSearch wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add - Make sure to install/update transport sudo apt-get install apt-transport-https Save the repo definition echo "deb https://artifacts.elastic.co/packages/5.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-5.x.list Update APT and install ElasticSearch from APT sudo apt-get update && sudo apt-get install elasticsearch Reload the daemon sudo /bin/systemctl daemon-reload Allow ElasticSearch to start on boot sudo /bin/systemctl enable elasticsearch.service Lets fire up ElasticSearch... sudo systemctl start elasticsearch.service Lets see if we have some logs sudo ls -la /var/log/elasticsearch/ Have a look at the logs and make sure that ElasticSearch has properly initiated sudo cat /var/log/elasticsearch/elasticsearch.

Step 1 – Setup PPA sudo dpkg --add-architecture i386 wget -qO - https://dl.winehq.org/wine-builds/winehq.key | sudo apt-key add - ###  Ubuntu 18.10  sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ cosmic main' ###  Ubuntu 18.04  sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main' ###  Ubuntu 16.04  sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ xenial main' Step 2 – Install Wine on Ubuntu sudo apt-get update sudo apt-get install --install-recommends winehq-stable sudo apt-get install aptitude sudo aptitude install winehq-stable Step 3 – Check Wine Version wine --version wine-4.0 How to Use Wine (Optional)? wine full_file_full_specified_name.exe

An error occurred while installing nokogiri (1.8.4), and Bundler cannot continue. Try this first and then bundle install again   sudo apt-get install build-essential patch ruby-dev zlib1g-dev liblzma-dev