ftp est un utilitaire Unix permettant d'échanger des fichiers par File Transfer Protocol.
$ ftp serveur-distant Connected to serveur-distant. 220 ProFTPD 1.3.1 Server (Debian) [IP-serveur-distant] Name (serveur-distant:root): root 331 Password required for root Password: 230 User root logged in Remote system type is UNIX. Using binary mode to transfer files. ftp> put /root/fichier-local fichier-distant local: /root/fichier-local remote: fichier-distant 200 PORT command successful 150 Opening BINARY mode data connection for fichier-distant 226 Transfer complete 36 bytes sent in 0.00 secs (270.4 kB/s) ftp> ls 200 PORT command successful 150 Opening ASCII mode data connection for file list -rw-r--r-- 1 root root 36 Apr 9 13:53 fichier-distant 226 Transfer complete ftp> mdelete fichier-distant mdelete fichier-distant? 250 DELE command successful ftp> ls 200 PORT command successful 150 Opening ASCII mode data connection for file list 226 Transfer complete ftp> quit 221 Goodbye. root@serveur-local:~$