just tried that... simple from the command line, i put in:
php -f httpdocs/find/admin/spider.php
http://www.my-site-url.com
and was met with:
PHP Warning: Function registration failed - duplicate name - imap_open in Unknown on line 0
PHP Warning: Function registration failed - duplicate name - imap_popen in Unknown on line 0
PHP Warning: Function registration failed - duplicate name - imap_reopen in Unknown on line 0
PHP Warning: Function registration failed - duplicate name - imap_close in Unknown on line 0
and that error list went on for pages. says it completed successfully at the end of the line, but nothing was done.