Busybox TFTP 사용법

TFTP 사용법
	Usage: tftp [OPTION]... HOST [PORT]
	Transfer a file from/to tftp server
	Options:
	-l FILE Local FILE
	-r FILE Remote FILE
	-g      Get file
	-p      Put file
	-b SIZE Transfer blocks of SIZE octets
PUT : #	tftp -l {local file name} -p {server ip}
ex)	tftp -l test.txt -p 192.168.1.10
GET : #	tftp -r {remote fiel name} -g {server ip}
ex	tftp -r text.txt -g 192.168.1.10