I'm trying to find all files for which there name starts with a capital letter. I have tried using the following command:find . -type f -regex '.*\/[A-Z][^/]*'It's finding paths with only lowercase letters.  The following works:find . -type f -regex '.*\/[ABCDEFGHIJKLMNOPQRSTUVWXYZ][^/]*'As does:find . -type f | grep '.*\/[A-Z][^/]*$'I've tried all the different options for regextype, with the same result.  Why does find include lowercase letters in [A-Z]?  I thought the regex for that was [a-zA-Z].  Is there any way to specify a range of only uppercase letters in find?
Find a file where name starts with a capital letter
find