Which characters are allowed in a filename

What characters are not allowed in linux file names?At no point do any characters in a filename need to be escaped except as required in order to not be interpreted by the shell.In windows, only nul, :, and \ are truly not allowed, but many apps restrict that further, also preventing ?, *, +, and %.You won't be able to allow ':' in the file name, but you can work around it.Allowed characters in filename you should start with the wikipedia filename page.Chars not allowed on windows ntfs does not allow the following chars:

You cannot use the period character at the end of a file name.