Characters used in file names

Character
Usage
/
Separates the components of a file's pathname.
~
(Tilde) symbolizes your home directory when used by itself. When used together with a user ID, ~ symbolizes that user's home directory. For example:
 ~valerie/.tcshrc
refers to user VALERIE's .tcshrc file.
.
When used as a component of a pathname, indicates the working directory.
..
When used as a component of a pathname, indicates the parent directory.
?
Used as a wildcard character that can match any one character, except a leading dot (.).
*
Used as a wildcard character that can match a sequence of zero or more characters, except a leading dot (.).