title: System has not been booted with systemd as init system (PID 1). Can't operate. Couldn't find an alternative telinit implementation to spawn
body: <p>I have  tried to install waves on Ubuntu 18.04LTS
  link for installing waves in ubuntu : <a href="https://docs.waves.tech/en/waves-node/how-to-install-a-node/on-ubuntu" rel="nofollow noreferrer">https://docs.waves.tech/en/waves-node/how-to-install-a-node/on-ubuntu</a></p>
  <p>command:  sudo apt install waves</p>
  <p>And I got this error</p>
  <p><strong>Error:System has not been booted with systemd as init system (PID 1). Can't operate.
  Couldn't find an alternative telinit implementation to spawn.</strong></p>
  <p>and i also get same error when I use commands like:</p>
  <ol>
  <li>sudo service waves.service start</li>
  <li>sudo dpkg -i --force-overwrite /var/cache/apt/archives/waves_1.2.17_all.deb</li>
  <li>sudo dpkg -i waves_1.2.17_all.deb</li>
  <li>sudo systemctl start waves.service</li>
  </ol>
  <p>And if I use command according to this link: <a href="https://linuxhandbook.com/system-has-not-been-booted-with-systemd/" rel="nofollow noreferrer">https://linuxhandbook.com/system-has-not-been-booted-with-systemd/</a></p>
  <p>command : sudo service waves.service start</p>
  <p>then it gives error:</p>
  <p><strong>Error: waves.service: unrecognized service</strong></p>
  <p>can anyone please help me with it?</p>