Remarks on File-Naming
- Don't use blank spaces in a name of a file/directory.
- You can use blank spaces in the case of Macintosh OS, but not UNIX which is a standard OS for server machines in the Internet.
- I recommend you to use "_" in substitution for the blank space " ".
- Discriminate the upper- and lower-case letters.
- For example, "a" and "A" are regarded same in the case of Macintosh OS (and MS-DOS), but not UNIX.