How does piping with ruby work?

[anansi]

Hi,
I have a ruby script which does some calculations and saves the result
in a variable. Now this script should start another external application
and pipe this variable's content into the gets() function of this
external app. Any idea how I can do this?

greets






--
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|/\| ,;;;;;, |/\|
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// \/ . \/ \\
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//`__\.-.-./__`\\
// /.-(() ())-.\ \\
(\ |) '---' (| /)
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jgs \) (/

one must still have chaos in oneself to be able to give birth to a
dancing star

 

[botp]

I have a ruby script which does some calculations and saves the result
in a variable. Now this script should start another external application
and pipe this variable's content into the gets() function of this
external app. Any idea how I can do this?

This is just a crude example.
$ cat test.rb
x=gets.chomp
puts "You piped: #{x}"

[botp@pc4family:~/Desktop/: Sun Apr 22 22:54:00]
$ irb
irb(main):001:0> a="this is a test"
=> "this is a test"
irb(main):003:0> system "echo #{a} | ruby test.rb"
You piped: this is a test
=> true
irb(main):004:0>

pls take a look at popen and Ara's session library.

kind regards -botp