|> GNU tar does. I've done complete network transfers of disk contents
|> using tar and netcat.
|
|Aren't there also some other things that could be happening with /proc and
|/dev, like dynamic content creation? I can't remember the details but I
|thought I'd throw that out there.

I normally exclude /proc from the tar since its contents are virtual.
/dev is ok to tar, GNU tar knows what to do with device files.
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