1-2-9

国嵌所有的实验代码

#!/bin/bash

#判断命令行是否代带有两个文件名的参数
if [ "$1" = "" ] || [ "$2" = "" ]
then
    echo "Please enter file name"
    exit 1
fi

#判断目标文件是否存在
if [ -e $2 ]
then
	echo "The file already exists"
	until [ ! -f $2 ] #监视该文件是否被删除
	do
        sleep 1
    done
	echo "The file have been deleted"
fi

#执行源文件移动为目标文件的命令
if [ ! `mv $1 $2` ]
then
    echo "mv sucessful"
else
    echo "mv error"
fi