update comport program

Guo Wenxue

2020-06-29 fea9eefde499e94fccd248cb40b347c44a8fd5e8

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INST_PATH=/usr/bin
BIN_NAME=ds18b20
 
all: 
    gcc ${BIN_NAME}.c -o ${BIN_NAME}
 
clean: 
    rm -f ${BIN_NAME}
 
install: 
    @cp ${BIN_NAME} ${INST_PATH}