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copied!<p>If you have a close look at the messages, you see that all but the last lines have a <code>-</code> behind the status code. The last line has a <code></code>, however, indicating, well, the last line.</p> <p>You can read that in <a href="http://www.faqs.org/rfcs/rfc959.html" rel="nofollow">RFC 959</a>, section 4.2:</p> <blockquote> <p>Thus the format for multi-line replies is that the first line will begin with the exact required reply code, followed immediately by a Hyphen, "-" (also known as Minus), followed by text. The last line will begin with the same code, followed immediately by Space , optionally some text, and the Telnet end-of-line code.</p> </blockquote> <p>There is nothing said about the 2nd to second-last line, but it is logical that they have the same format as the 1st one.</p> <hr> <p>Update: The FTP protocol seems to be badly documented, but I found another reference stating the same as me above:</p> <p>The <a href="http://www.tcpipguide.com/free/t_FTPRepliesReplyCodeFormatandImportantReplyCodes-5.htm" rel="nofollow">TCP/IP Guide</a> mentions that</p> <blockquote> <p>It is possible for a reply to contain more than one line of text. In this case, each line starts with the reply code, and all lines but the last have a hyphen between the reply code and the reply text, to indicate that the reply continues. The last line has a space between the reply code and reply text, just like a single-line reply. This facility is often used to provide additional response information after a user logs in, via the 230 reply code.</p> </blockquote>

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