主题：【求助】急啊，请教一个UNIX的问题 -- 东张西望

split a file into pieces wiith options such as:

-b, --bytes=SIZE (put SIZE bytes per output file)

SYNOPSIS

split [OPTION] [INPUT [PREFIX]]

DESCRIPTION

Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...;

so you can copy small files on disks, then cat them together in another system. this is an answer for 1, probably. (do you know how to use "man split" to get instruction for commad split?

for 2，找了根电话线一头联在一台手提上(??)

you need a cross-10/100/1000baseT cable to connect two systems directly. I doubt that 电话线 could work.

for 3. I don't know.