How can I list the file/directory names in a directory recursively that are the same, but with different capitalization/case? ex.: INPUT (not the ls command, the directories):  [user@localhost ~/a] ls -R.:b./b:ize  Ize./b/ize:./b/Ize:[user@localhost ~/a] OUTPUT:/b/ize
How to find file/directory names that are the same, but with different capitalization/case?
shell;find;filenames
If you have GNU uniq, you can sort case insensitively (-i), and use -d to print only duplicate lines:find . | sort -f | uniq -diAs @StephaneChazelas mentioned in his answer, this might not do what you expect if you can have duplicate paths that only differ in case (like a/b/foo and A/b/foo). 