FTP 协议命令实战
废话就不多说了，下面是用TELNET连接Serv-U测试成功的例子
下载文件
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
PASV
227 Entering Passive Mode <127,0,0,1,4,191>
REST 0
350 Restarting at 0. Send STORE or RETRIEVE.
RETR test.rar
150 Opening ASCII mode data connection for test.rar <94370 bytes>.
226 Transfer complete.
覆盖方式上传文件
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
STOR test.dat
150 Opening ASCII mode data connection for test.dat
PASV
227 Entering Passive Mode <127,0,0,1,4,191>
...创建另一条连接到指定端口然后向其发送数据...
追加方式上传文件
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
APPE test.dat
150 Opening ASCII mode data connection for test.dat
PASV
227 Entering Passive Mode <127,0,0,1,4,191>
...创建另一条连接到指定端口然后向其发送数据...
重命名文件和目录
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
RNFR sss.rar
350 File or directory exists; ready for destination name
RNTO stock.rar
250 RNTO command successfull.
删除文件
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
DELE test.dat
250 DELE command successfull.
建立和删除目录
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
MKD myDir
257 "/myDir" directory created.
RMD myDir
250 RMD command successfull.
退出连接
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TELNET 127.0.0.1 21
220 Serv-U FTP Server v4.0 for WinSock ready...
USER ADMIN
331 User name okay, need password.
PASS ****
230 User logged in, proceed.
221 Goodbye!