FTP reply codes

Below is a arbitrary of the acknowledgment codes that may be alternate by an FTP server. These codes accept been connected in RFC 959 by the IETF. As declared beforehand in this article, the acknowledgment cipher is a three-digit value. The aboriginal chiffre is acclimated to announce one of three accessible outcomes—success, abortion or to announce an absurdity or abridged reply:

2yz – Success reply

4yz or 5yz – Abortion Reply

1yz or 3yz – Absurdity or Abridged reply

The added chiffre defines the affectionate of error:

x0z – Syntax. These replies accredit to syntax errors.

x1z – Information. Replies to requests for information.

x2z – Connections. Replies apropos to the ascendancy and abstracts connections.

x3z – Authentication and accounting. Replies for the login action and accounting procedures.

x4z – Not defined.

x5z – Book system. These replies broadcast cachet codes from the server book system.

The third chiffre of the acknowledgment cipher is acclimated to accommodate added detail for anniversary of the categories authentic by the added digit.