How do I pipe stdout of continuously running node scripts into a ruby script

Question

I have numbers.rb

loop do
  puts rand(10)
  sleep(1)
end

I have pipe.rb

ARGF.each_line do |line|
  puts "received #{line}"
end

I'm trying to pipe output of number.rb to pipe.rb. Like this –

ruby lib/numbers.rb | ruby pipe.rb

However, this doesn't do what I want it to do. Basically, the piped input doesn't seem to be recieved until the process number.rb stops executing. But numbers.rb isn't supposed to end. How do I pipe the stdout of numbers.rb continuously, as it happens, to pipe.rb?

Chirantan · Accepted Answer · 2014-10-31 15:05:12Z

1

10 seconds after having posted this question, figured the answer out. Have to put $stdout.sync = true at the top of numbers.rb

answered Oct 31, 2014 at 15:05

Chirantan

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1 Comment

the Tin Man Over a year ago

Instead of writing what is basically a comment in an answer, improve this by showing a complete working example, then when Stack Overflow lets you you can select it as the answer.

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