FTP 212 Directory Status vs 502 Command Not Implemented
FTP 212 (Directory Status) is a 2xx Positive Completion response, while 502 (Command Not Implemented) is a 5xx Permanent Negative response. 212 indicates that directory status reply. The server provides information about the current directory or a specified directory. In contrast, 502 means that command not implemented. The server recognizes the command but does not support it in its current configuration.
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.
描述
Command not implemented. The server recognizes the command but does not support it in its current configuration.
何时出现
When you use a valid FTP command that this particular server has not implemented, such as SITE or SMNT.
如何修复
Use an alternative command or approach. Check the server's FEAT response or HELP output to see which commands are actually supported.
主要区别
212 is a 2xx Positive Completion response, while 502 is a 5xx Permanent Negative response.
FTP 212: Directory status reply. The server provides information about the current directory or a specified directory.
FTP 502: Command not implemented. The server recognizes the command but does not support it in its current configuration.
You encounter 212 when after issuing the STAT command on a directory, the server returns the directory listing or status information.
You encounter 502 when when you use a valid FTP command that this particular server has not implemented, such as SITE or SMNT.
何时使用哪个
For 212 (Directory Status): No fix needed — this is an informational response showing directory contents or status. For 502 (Command Not Implemented): Use an alternative command or approach. Check the server's FEAT response or HELP output to see which commands are actually supported.