FTP (File Transfer Protocol) is a TCP/IP protocol which is used to transfer files. In Telehack, it is used to transfer executable (EXE) files from host to host.
The following is a screenshot of the FTP command showing a list of commands:
ftp> ? ascii switch to ASCII mode bin switch to binary mode close close the connection del delete files from remote host get get files from remote host lls list files on local host ls list files on remote host open connect to a remote host put put files to remote host quit exit user authenticate to the remote server ftp>