FTP 120 Service Ready Soon vs 501 Syntax Error in Arguments
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 501 (Syntax Error in Arguments) is a 5xx Permanent Negative response. 120 indicates that the service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly. In contrast, 501 means that syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.
説明
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
このコードが表示される場合
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
解決方法
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
説明
Syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.
このコードが表示される場合
When you use a valid command but with wrong parameters, such as an invalid path format or incorrect argument count.
解決方法
Review the command's required argument format. Common issues include missing quotes around paths with spaces or invalid character encoding.
主な違い
120 is a 1xx Positive Preliminary response, while 501 is a 5xx Permanent Negative response.
FTP 120: The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
FTP 501: Syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 501 when when you use a valid command but with wrong parameters, such as an invalid path format or incorrect argument count.
どちらをいつ使うか
For 120 (Service Ready Soon): Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator. For 501 (Syntax Error in Arguments): Review the command's required argument format. Common issues include missing quotes around paths with spaces or invalid character encoding.