Just a quick question, how do I access files and dirs in the shell when they have spaces in their names. e.g. "Program Files" Is there a character that is used instead of the ' ' character? Thanks.

Under most shells, you can just escape the space like: Program\ Files.

Enclosing the filename in double-quotes also works.

If you are not sure how to type the file name and and your shell supports tab-completion it can be a godsend. Just type >Progra and hit tab the shell will fill out the name with escapes and quoting as needed. If you are using bash you can hit tab twice (if the first tab does not work) to get a list of possible matches.

Thanks guys, all methods worked.