Read from a stream: works with a FIFO.

reader.js

var fs = require('fs')

var s = fs.createReadStream('x')
s.on('data', function(b) { console.log(b) })

start.sh

mkfifo x
node reader.js &
echo "Hello!" > x

nice :) . Were you think of using something like this for anything in particular?

Nope. Just a question on #node.js -- "how do I read from a FIFO in node?" -- answered in code. I personally find fifos entirely antiquated and it's usually better to use a socket.