FTP 202 Command Superfluous vs 500 Syntax Error
FTP 202 (Command Superfluous) is a 2xx Positive Completion response, while 500 (Syntax Error) is a 5xx Permanent Negative response. 202 indicates that the command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect. In contrast, 500 means that syntax error, command unrecognized. The server could not parse the command. This may also be sent when the command line is too long.
Описание
The command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect.
Когда вы это видите
When you send a command the server recognizes but considers unnecessary, such as ALLO on a server that does not require pre-allocation.
Как исправить
No fix needed — the server is telling you the command is not necessary. You can safely ignore this response and continue.
Описание
Syntax error, command unrecognized. The server could not parse the command. This may also be sent when the command line is too long.
Когда вы это видите
When you send a malformed or misspelled command, or a command the server does not recognize at all.
Как исправить
Check the command spelling and syntax. Use HELP to see the list of supported commands on this server.
Ключевые различия
202 is a 2xx Positive Completion response, while 500 is a 5xx Permanent Negative response.
FTP 202: The command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect.
FTP 500: Syntax error, command unrecognized. The server could not parse the command. This may also be sent when the command line is too long.
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 500 when when you send a malformed or misspelled command, or a command the server does not recognize at all.
Когда что использовать
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 500 (Syntax Error): Check the command spelling and syntax. Use HELP to see the list of supported commands on this server.