What is file transfer and what is it used for?
FTP (File Transfer Protocol) is a method for transferring files between two computers on a network. The two computers must be on the Internet. Examples of FTP use are: to transfer files between your computer and your web space on a large computer, to transfer software or files to your computer from known Internet sites.
FTP has two parts: the client and the server. The FTP client is a program on the computer you are using or are logged in to. The FTP server is a program on a remote computer that you want to connect to.
Not all FTP programs are alike and you may find that your ftp client or the server you are connected to use somewhat different commands. IBM PC and Macintosh client software, such as SSH FTP, Core FTP or Fetch (for Mac), present a graphical, window-oriented interface.