shell 删除 .svn 目录

经常使用文件 怎么去掉 .svn文件

echo 'start~'
if [ -z $1 ]; then 
echo 'please input you need del directory!';
exit;
elif [ ! -d $1 ]; then
     echo "$1 is not directory";    
else
cd $1;
    echo "change path $1";
    find . -type d -name ".svn" |xargs rm -rvf;
    find . -type f -name "Thumbs.db" |xargs rm -rvf;    
fi;