FTP 202 Command Superfluous vs 212 Directory Status
Both FTP 202 (Command Superfluous) and 212 (Directory Status) belong to the 2xx Positive Completion category. 202 indicates that the command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect. Meanwhile, 212 means that directory status reply. The server provides information about the current directory or a specified directory.
描述
The command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect.
何时出现
When you send a command the server recognizes but considers unnecessary, such as ALLO on a server that does not require pre-allocation.
如何修复
No fix needed — the server is telling you the command is not necessary. You can safely ignore this response and continue.
描述
Directory status reply. The server provides information about the current directory or a specified directory.
何时出现
After issuing the STAT command on a directory, the server returns the directory listing or status information.
如何修复
No fix needed — this is an informational response showing directory contents or status.
主要区别
FTP 202: The command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect.
FTP 212: Directory status reply. The server provides information about the current directory or a specified directory.
You encounter 202 when when you send a command the server recognizes but considers unnecessary, such as ALLO on a server that does not require pre-allocation.
You encounter 212 when after issuing the STAT command on a directory, the server returns the directory listing or status information.
何时使用哪个
For 202 (Command Superfluous): No fix needed — the server is telling you the command is not necessary. You can safely ignore this response and continue. For 212 (Directory Status): No fix needed — this is an informational response showing directory contents or status.