open - opens a connection
close - closes a connection
ls - list content of current remote directory
cd - change remote directory
lcd - change local directory
get - download remote file
mget - download multiple remote files
put - upload local file to remote server
mput - upload multiple local files to remote server
prompt - toggle on/off prompting
binary - change transfer mode to binary rather than ASCII
bye - exit

opening a ftp server in a web browser = ftp://username:password@ftpserver