File transfer over a serial line

Question

I have 2 linux computers, and a serial line between them, one of them is only accessible through a serial line that has shell on it. How can I transfer files between the 2 computers?

I've heard that it can be done with some rz/sz magic...

Can I do the same trick with a pseudo-terminal instead of other computer?

Answer 1

You need a terminal application like minicom. Then you connect the two computers, start minicom on one side, connect to the other side (the one where you can login) and use the sz command to send the file. Minicom will automatically detect the file transfer. Note that you might need to install the sz command on the login machine, how that is done is dependent on your distribution.