Beh ... non sempre ...

http://www.cs.colostate.edu/helpdocs/ftp.html

http://www.nsftools.com/tips/MSFTP.htm

http://linux.about.com/od/commands/l/blcmdl1_ftp.htm

http://www.simotime.com/ftp4cmd1.htm

http://kb.iu.edu/data/aenq.html