Re: Linux.
I was definitely using it back in '91 when an 80486 was the hottest thing out there, and I was lucky to have a 14.4 modem and a line clean enough to actually use it. ZMODEM was the goto protocol then because it had three key features: batch transfer (can set up to transfer a group of files in one go), resume (in case the transfer or even the connection dropped out partway), and adjustable packet sizes (from as low as the XMODEM standard of 128B to the YMODEM standard of 1KB, and in between if necessary to balance between data integrity and transfer efficiency). A little later, a competing system called HSLink made the rounds as well with similar features.
Biting the hand that feeds IT
