start stop restart process

#!/usr/bin/ruby
@exec="red5.sh"
@name="Red 5"
@match="/var/red5/boot.jar"
@kill_sig="-9"
@sleep=5

@pidfile=File.expand_path(File.join(File.dirname(__FILE__), "pid", "#{@exec}.pid"))
@path=File.expand_path(File.join(File.dirname(__FILE__)))


def start
  print "starting #{@name}..."
  STDOUT.flush
  system("#{@path}/#{@exec} & echo $! > #{@pidfile}")
  puts " [done]"
end

def stop
  if pid_present?
    print "stopping #{@name}..."
    STDOUT.flush
    `kill #{@kill_sig} #{@pid}`
    sleep @sleep
    puts " [done]"
  else
    puts "#{@name} appears not to be running...(pid not found)"
  end
end

def restart
  stop
  start
  puts "#{@name} restarted !"
end

def pid_present?
  puts "checking for #{@pidfile}"
  if File.exists?(@pidfile)
    @pid=File.read(@pidfile).chomp
    puts "pid of #{@name} : #{@pid}"
    @check=`ps #{@pid}`.split("\n").last
    File.delete(@pidfile)
    return @check=~/#{@match}/
  else
    return false
  end
end

case ARGV[0]
  when "start" then start
  when "stop" then stop
  when "restart" then restart
  else
    puts "call with start | stop | restart"
end