SITE supported command

This ftp server supports the following SITE command:
	INDEX <string>

To access this feature, type 
	QUOTE SITE INDEX <string>

and the complete listing of the directory tree which is accessible to
anonymous ftp users (which is in the file /INDEX) is searched for that
string of text.  The listing is terminated following the first 18
`hits', so please be as specific as possible when selecting your
<string> to search for.  The string is a extended regular expression
for the GNU implementation of the UNIX egrep utility, so wildcards are
available for the SITE INDEX command (in general, a wildcard within a
regular expression meaning "any number of characters, including null"
is ".*").  Casing of your command, including the search string, does
not matter.

Examples:
	quote site index pkz204g
would return every occurrence (up to the first 18) of the string
"pkz204g" within the index of files.

	quote site index disk.*fli
would return every occurrence of the string "disk" followed by the
string "fli".

	quote site index dvijep|dvialw
would return matches for either dvijep or dvialw.