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3.21	identify

	abstract: Control node panel identify light.

	usage	: java -jar GbtUtility-2.1.76.jar [options] identify <interval>
	<interval>
	0		Turn off light.
	1-255		Turn on light with this interval(Unit: second)
			
	Example	:
		  by node list	 : java -jar GbtUtility-2.1.76.jar identify 50
		  by single host : java -jar GbtUtility-2.1.76.jar -H 10.1.27.79 identify 0
		  by scan host	 : java -jar GbtUtility-2.1.76.jar -S rmcp,10.1.27.79,10.1.27.100 identify 255
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