Installing elasticsearch in ubuntu

sudo apt-get update

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.4.0.deb wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.4.0.deb.sha512 shasum -a 512 -c elasticsearch-6.4.0.deb.sha512

sudo dpkg -i elasticsearch-6.4.0.deb



if error as below:
systemctl: command not found

sudo apt-get install systemd


updated: 17 Oct 2019
https://www.elastic.co/guide/en/elasticsearch/reference/current/es-release-notes.html