Restart Node

gistfile1.rb

#!/usr/bin/env ruby

pipe = '/somewhere/commands'
launch_cmd = 'cd /somewhere ; node'
process_name = 'node'

open(pipe, 'r') do |f|
  begin
    f.each_line do |line|
      case line.strip
      when 'restart'
        pid = `pidof $process_name`
        unless pid.empty? then
          puts "Kill pid: #{pid}"
          `kill #{pid}`
        end
        
        begin
          pid = `pidof $process_name`
          sleep 1
          puts "Waiting for shutdown"
          `kill #{pid}` unless pid.empty?
        end while !pid.empty?
        
        puts "Start"
        job = fork do
          exec $launch_cmd
        end
        Process.detach(job)
      end
    end
    sleep 5
  end while true
end