Retrieve FTP directory tree from the command line

What would be the fastest way to recursively retrieve entire directory listing from an ftp server using wget/curl/whatever? I don't need to download any files, just directory and file names. Basically what ls -R does.

From serverfault stereofrog

• wget -r ftp://your.site.com/
  

  From Peter K.

• The best I can do with wget is

  wget -r --spider --no-remove-listing ftp://ftp.example.com/
  

  Which will create empty directories containing a .listing file with the listing of the matching directory on the ftp server, and take forever.

  You'll probably need to use a real ftp client like lftp:

  lftp -e "find;quit" ftp://ftp.example.com/ > listing.txt
  

  From DerfK