File Transfer Protocol server subcommands
These subcommands represent communication between the File Transfer Protocol (FTP) client and the FTP server. This topic includes descriptions for IBM® i CL-equivalent subcommands that are unique to the IBM i FTP server.
The FTP client communicates with the server using server subcommands. This topic provides the server subcommands, descriptions of what they do, their syntax conventions, and FTP reply status messages.
IBM i FTP server uses the subcommands listed in the following table.
| Subcommand | What It Does |
|---|---|
| ABOR | Cancels the Previous Subcommand |
| ADDM | Adds a Member to a Physical File |
| ADDV | Adds a Member to a Variable-Length Member to a Physical File |
| APPE | Appends Data to a Specified File |
| AUTH | Defines the authentication mechanism used for the current FTP session. |
| CCC (Clear Command Channel) | Changes the transmission mode in a control connection from the encrypted mode to the clear text mode |
| CDUP | Changes Directory to the Parent Directory |
| CRTL | Creates a Library |
| CRTP | Creates a Physical File |
| CRTS | Creates a Source Physical File |
| CWD | Changes the Working Directory or Library |
| DBUG | Starts or Ends a Server Trace |
| DELE | Deletes a File, a Member, or a Document |
| DLTF | Deletes a File |
| DLTL | Deletes a Library |
| HELP | Gets Information about FTP Server Subcommands |
| LIST | Lists Files or Directory Entries |
| MKD | Makes a Directory |
| MODE | Specifies a Format for Data Transmission |
| NLST | Lists the Names of Files or Directories |
| NOOP | Checks if Server is Responding |
| PASS | Sends a Password to the Server |
| PASV | Tells the Server to Passively Open the Next Data Connection |
| PBSZ | Defines the largest buffer protection buffer size to be used for application-level encoded data sent or received on the data connection. |
| PORT | Identifies the Data Port on which the Client Will Listen for a Connection |
| PROT | Defines the protection used for FTP data connections |
| PWD | Displays the Current Working Directory |
| QUIT | Logs Off the User; Closes the Connection |
| RCMD | Sends a CL Command to an FTP Server |
| REIN | Re-starts a Session on a Server |
| RETR | Retrieves Data from a Server |
| RMD | Removes a Directory |
| RNFR | Specifies a File to be Renamed |
| RNTO | Specifies a New File Name |
| SITE | Sends Information for a Server to Use |
| STAT | Gets Status Information from a Server |
| STOR | Saves Data on a Server and Replaces an Existing File |
| STOU | Saves Data on a Server But Does Not Replace an Existing File |
| STRU | Specifies the Structure of a File |
| SYST | Prints the Name of the OS on the Server |
| TIME | Sets the Time-Out Value for the FTP Server |
| TYPE | Specifies the File Transfer Type |
| USER | Sends a User Logon ID to the Server |
| XCUP | Changes to the Parent Directory |
| XCWD | Changes to the Working Directory |
| XMKD | Creates a Directory |
| XPWD | Displays the Current Directory or Library |
| XRMD | Removes a Directory |
Subcommands unique to IBM i FTP server
IBM i FTP server subcommands include a special set of commands that are abbreviated names of equivalent but longer IBM i control language (CL) commands.
The names of these special server subcommands must be 4 characters in length to comply with the FTP limits. When the FTP server receives these subcommands, the name are interpreted in this way:
- ADDM = ADDPFM (Add Physical File Member)
- ADDV = ADDPVLM (Add Physical File Variable Length Member)
- CRTL = CRTLIB (Create Library)
- CRTP = CRTPF (Create Physical File)
- CRTS = CRTSRCPF (Create Source Physical File)
- DLTF = DLTF (Delete File)
- DLTL = DLTLIB (Delete Library)
In addition to these specific subcommands, you can use the FTP server subcommand RCMD to send any CL command to the FTP server.