Executing a system call

[Jagarlamudi Jagadeesh]

Hi All,
	
	There are so many ways to execute a system call like,
		getstatusoutput()

		os.system()
	
		fork()
		os.execvp()

		using popen

	Of all these, which is the best to use ( interms of speed and 
resources) ?

-- 
	Jagadeesh Jagarlamudi
	Btech 3rd year student.
	IIIT - Hyd,
	Gachibouly, Hyderabad