代码：
#!/bin/bash
if [ -z
代码：
#!/bin/bash
if [ -z $1 ]; then
read -p "please input device name:" x
else
x=$1
fi
if [ -b $x -o -c $x ]; then
echo "The $x is a device file!"
else
echo "The $x is not a device file!"
fi
转载自blog.csdn.net/bigwood99/article/details/105116180 ]; then
