ftp://www.3gpp.org/Specs/
==============================
[右] 正在连接到 hui2020测试FTP-> DNS=www.3gpp.org IP=195.238.226.15 PORT=21
[右] 正在连接到 hui2020测试FTP
[右] 220 Microsoft FTP Service
[右] USER anonymous
[右] 331 Anonymous access allowed, send identity (e-mail name) as password.
[右] PASS (隐藏)
[右] 230-WELCOME TO 3GPP
[右] 230 Anonymous user logged in.
[右] SYST
[右] 215 Windows_NT
[右] FEAT
[右] 211-FEAT
[右] SIZE
[右] MDTM
[右] 211 END
[右] CWD /ftp/workshop/
[右] 550 /ftp/workshop: The system cannot find the path specified.
[右] PWD
[右] 257 "/" is current directory.
[右] TYPE A
[右] 200 Type set to A.
[右] PASV
[右] 227 Entering Passive Mode (195,238,226,15,4,67).
[右] 正打开数据连接 IP: 195.238.226.15 端口: 1091
[右] LIST -al
[右] 125 Data connection already open; Transfer starting.
[右] 226 Transfer complete.
[右] 列表完成: 923 字节 于 3.66 秒 (0.2 KB/秒)
