您可以使用接受正则表达式的命令rename重命名一组文件

you can rename a group of files using command rename that accept regular expression

例如，要重命名所有匹配"* .bak"的文件以去除扩展名，您可能会说

For example, to rename all files matching "*.bak" to strip the extension, you might say

rename 's/\.bak$//' *.bak

要将大写名称转换为小写，请使用

To translate uppercase names to lower, you'd use

rename 'y/A-Z/a-z/' *

和您的答案:

rename 's/%20/ /' *.cpp