YMODEM for Linux: Transfer Data with Ease.（ymodemlinux）

YMODEM is an effective data transfer protocol that enables users to easily send and receive files across different devices. In the Linux operating system, it is used for remote file transfer between systems running on different platforms. YMODEM for Linux enables users to quickly and easily transfer data between two Linux systems over a serial communication line.

The YMODEM protocol, first developed by Chuck Forsberg in 1980, is an advanced protocol for file transfer over serial connections. It offers a number of advantages over other protocols such as increased speed, reliability, and efficient error checking. Unlike other protocols, YMODEM does not need to wait for the receiver to acknowledge the data before sending. This makes it ideal for transferring large volumes of data quickly and reliably.

In Linux, YMODEM can be used with a variety of applications including telnet, rz, sz, and kermit. To use it, users must install the ymodem package, and then configure the parameters of their application to enable the file transfer. Once configured, begin the process by launching the rz (or sendz) command in the source system and the sz (or receivez) command in the destination system. These commands then initiate the prompt to enter the file name, and file transfer commences.

Users can also use a graphical user interface (GUI), such as a file manager, to initiate the file transfer. To do this, select the file to be transferred from the source system, then click and drag it into the destination system. YMODEM for Linux will then commence the transfer process.

The transfer process between two Linux systems using YMODEM for Linux is very simple and effective. It offers a number of benefits such as fast and reliable data transfers, efficient error-checking, and no acknowledge requirements. All of this contributes to an easy, efficient, and secure file transfer between two Linux systems.

In conclusion, YMODEM for Linux is an incredibly useful and easy to use protocol that enables two Linux systems to easily transfer data between them with reliability and efficiency. It is an ideal solution for applications that require a fast and secure method of transferring data between two Linux machines.

#include /* ymodem.h is the header file for YMODEM */
int ymodem_init(int fd, struct termios *oldtio); 
int ymodem_send_file(int fd, void *data, int size, int flag);
int ymodem_receive_file(int fd, void *data, int size);
int ymodem_done(int fd, const struct termios *oldtio);