修改文件夹大小写

#小写换成大写
#!/bin/bash
for file in `ls | grep '[a-z]'`
do
str=`echo $file|tr 'a-z' 'A-Z'`
mv $file $str
done

#大写换成小写
#!/bin/bash
for file in `ls | grep '[A-Z]'`
do
str=`echo $file|tr 'A-Z' 'a-z'`
mv $file $str
done