如何使用终端大写当前目录中的所有文件？

Question

I am trying to capitalize all files in my current working directory using the following command:

ls | awk '{system("svn mv " $0 " " toupper(substr($0,1,1)) substr($0,2))}'

Yet, I am getting the following error message:

svn: '.' is not a working copy
svn: '.' is not a working copy
svn: '.' is not a working copy
svn: '.' is not a working copy

I am on a osx. Could you please help? Thanks in advance.

Answer 1

you should not use ls in scripting, ls is for human presentation of data (and will surprise your scripts with space in names, special folders like . and .. like here and so on...), try instead:

for f in *;do;svn mv $f $(echo $f| tr '[a-z]' '[A-Z]');done

See here for other case conversions alternatives , I used tr since awk is not needed here.