shell read

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read [选项] 值
read -p(提示语句) -n(字符个数) -t(等待时间，单位为秒) –s(隐藏输入)
eg:
read –t 30 –p “please input your name: ” NAME
echo $NAME
read –s –p “please input your age : ” AGE
echo $AGE
read –n 1 –p “please input your sex [M/F]: ” GENDER
echo $GENDER