FTP client subcommand
Open systemname [portnumber]
- systemname
- The name or Internet address of the remote system.
- portnumber
- The port number to use for this session until the server closes the connection.
This is optional. If you do not specify a port number, the server chooses
one.
After you have opened a connection to a remote
system, you cannot connect to another system until you close the current session.