Question:

Over the last year or so I have uploaded many files and folders to my account. I am getting ready to do a complete redesign of my web site and I am not going to need any of those. However I looked and there are so many files that I am concerned I may delete something important.

How can I tell what's important to my account's operation?

Answer:

Here is a list of the system folders and files that can be found in an account:

(Do not Delete)

/big/dom/xyourdomainname/username
/.mc
.bash_history
.bash_logout
.bash_profile
.bashrc
.inputrc
.mysql_history (if MySQL is enabled for your account)
.qmail
If you have ezmlm/ezmlm-idx mailing lists, you will also find files and directories for those here. Deleting those files or directories may cause your mailing lists to no longer function.

/big/dom/xyourdomainname
/.auth (deprecated, but may still exist in older accounts)
/.autorespond (deprecated, but may still exist in older accounts)
/.cnc (deprecated, but may still exist in older accounts)
/.srcmd
/.sys_opr_dir
/cgi-bin
/username
/logs
/logs_cgi
/logs_email
/logs_services/ftp (Genesis Class only)
/logs_web
/vmspool (deprecated, but may still exist in older accounts)
/www
.qmail-default (deprecated, but may still exist in older accounts)
.qmail-respond (deprecated, but may still exist in older accounts)

/big/dom/xyourdomainname/www
404.html
index.fquest <- May be removed safely
robots.txt
/Real_Audio (deprecated, but may still exist in older accounts if RealMedia was requested)
/Secure_Server (if SSL was requested for your account)

Hopefully this will give you a map of what to avoid.
(Note: Items in Bold Blue will reflect your actual xdom and username.)