List entire directory paths for remote FTP directory

I use this all the time to quickly search for fancy filenames in FTP servers that allow for anonymous logins. It basically is a for loop to log into each server, run the find command which outputs absolute paths for directories and files, and outputs that to a file with a name as the IP.

for i in `cat ftp_anon_hosts`; do echo FTP LIST $i; lftp -e "find;QUIT" anonymous:anonymous@$i > ftp/$i; done