ftp> 
ftp> ccsdjhkdsajkhdakjsdkhjsd
?Invalid command
ftp> 
ftp> 
ftp> qqqqqqqqqqqqqqqqwqwewqwwerqreerqqeerrttrtrtyrytytytytrytrythgfhgfghfddhgfhh 
jhjjhuyyuyttyrttrrtrtrtrtwrtrterterterterwwwwwwwww
?Invalid command
ftp> 
ftp> 
ftp> qqwuwuququqiuişş