STRUCT (Specify File Structure)

FTP client subcommand

To specify the structure of the data sent for a file, use the STRUCT FTP client subcommand in this format:

STRuct [F | R]

F
A file structure. The structure of a file is a continuous sequence of data bytes.
R
A record structure. The file transfers as a sequence of sequential records.

The structure of a file affects the transfer mode and the interpretation and storage of a file.

Related reference
File Transfer Protocol client syntax conventions