Process

# File lib/puma/daemon_ext.rb, line 2
def self.daemon(nochdir=false, noclose=false)
  exit if fork                     # Parent exits, child continues.

  Process.setsid                   # Become session leader.

  exit if fork                     # Zap session leader. See [1].

  Dir.chdir "/" unless nochdir     # Release old working directory.

  if !noclose
    null = File.open "/dev/null", "w+"
    STDIN.reopen null
    STDOUT.reopen null
    STDERR.reopen null
  end

  0
end