method

popen

v2_2_9 - Show latest stable - Class: Gem::Util

popen(*command)

public

This calls IO.popen where it accepts an array for a command (Ruby 1.9+) and implements an IO.popen-like behavior where it does not accept an array for a command.

# File lib/rubygems/util.rb, line 48
  def self.popen *command
    IO.popen command, &:read
  rescue TypeError # ruby 1.8 only supports string command
    r, w = IO.pipe

    pid = fork do
      STDIN.close
      STDOUT.reopen w

      exec(*command)
    end

    w.close

    begin
      return r.read
    ensure
      Process.wait pid
    end
  end

popen

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