shell-util

#!/bin/bash

#1-2-9

#判断命令行是否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

dosleep 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 successfully"

else

echo "mv error"

fi