How to delete once whole files in a remote directory?

remote file

[backpacker]

I mean using ftp or gftp,mdelete.Thanks very much.

[MichaelBluejay]

I don't know what you mean by "once whole files". Most people use some kind of FTP software like FileZilla (Windows) or Transmit (Mac), which has a graphical interface that makes it easy to trash files. If you're logging in on the Unix command line, the command to delete a file is "rm <filename>". Try searching Google for "unix delete a file".