I'm trying to write a little lib which generates a keypair using open4, is this the best way of dealing with system calls with multiple prompts? require 'rubygems' require 'open4' Open4::popen4("sh") do |pid, stdin, stdout, stderr| stdin.puts "openssl genrsa -des3 -out tmp_priv.pem 2048" stdin.puts "1234" stdin.puts "1234" std...
I'm looking to expose an interactive command line program via JSON or another RPC style service using Ruby. I've found a couple tricks to do this, but im missing something when redirecting the output and input. One method at least on linux is to redirect the stdin and stdout to a file then read and write to that file asynchronously wit...
I am using the open4 gem and having problems reading from the spawned processes stdout. I have a ruby program, test1.rb: print 'hi.' # 3 characters $stdin.read(1) # block And another ruby program in the same directory, test2.rb: require 'open4' pid, stdin, stdout, stderr = Open4.popen4 'ruby test1.rb' p stdout.read(2) # 2 characters...