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For installation of supervisord see http://supervisord.org/installing.html and for running http://supervisord.org/running.html.
Under Ubuntu a "apt install supervisor" should do the job.
For integration of supervisord in boot up, either a start script was provided by your linux distribution or follow the instructions in: https://serverfault.com/questions/96499/how-to-automatically-start-supervisord-on-linux-ubuntu
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