[英]How to rename many files (found with glob) from lower to the upper case without changing the extension?
我用了：
rename 's/a-z/A-Z' *.txt
但是，此命令也会更改文件扩展名的寄存器。
认为你是这个意思，
rename 's/([a-z])(?=.*?\.txt$)/\U$1/g' *.txt
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如何在不更改Linux 102221.pdf到102221_name.pdf扩展名的情况下重命名文件
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如何使用 awk 或 sed 或 python 将特定字符从大写更改为小写？
[英]How to change a specific character from upper case to lower case using awk or sed or python?
如何在Linux / Unix中将多个文件从一个扩展名重命名为另一个扩展名？
[英]How to rename multiple files from one extension to another in Linux / Unix?
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[英]SED- Change column from lower to upper case based on 2 conditions from script
python glob.glob - 如何查找特定文件（或文件列表）而不知道它在子目录中的深度？
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如何使用pid和不使用pid在linux中打印内核堆栈的低位和高位地址以进行处理
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