nice link chrism01.
if you just want to use the normal ftp command in linux.
open terminal window.
if username and password is required, enter the required details.
if authentication is successful,it should display UserName is logged in
once inside the ftp window you can use ?
mark for additional commands.
you can use command
to read files.
to download the file that you want type:
the file should be downloaded in your current directory where you run the ftp.
hope it helps. Good luck!