YMODEM Batch Protocol

YMODEM batch protocol is commonly used by PCs and other systems. It is an error-correcting protocol and is newer than XMODEM. Unlike XMODEM, YMODEM preserves the names, sizes, and hash codes of the transferred files. It also allows you to use wildcard file specifications to transfer groups or batches of files. Because it is not as complicated as ZMODEM, some remote systems support YMODEM but not ZMODEM.

Use the ytransmit command to send files and yreceive to get files from the remote system using YMODEM batch protocol.

The remote system must have software that supports YMODEM batch protocol. You must have a transparent, 8-bit connection to the remote system.

Note Sometimes XMODEM-1K protocol is called "YMODEM." On such systems, the "real" YMODEM will be called YMODEM batch. ytransmit and yreceive support YMODEM batch protocol. xtransmit and xreceive with the x1k option turned on use XMODEM-1K protocol.

YMODEM-g

Autolog also supports a "turbo" variation of YMODEM called YMODEM-g. YMODEM-g can be used when you have a clean, error-free connection, such as a reliable modem connection. Use the command ygtransmit to send a file using YMODEM-g protocol, and ygreceive to receive a file using YMODEM-g protocol.