Quick `open3` wrapper for running a synchronous system command and returning the pid, exit_status, stdout and stderr of the provided command.

run.rb

require "open3"

def run(cmd)
  Open3.popen3(cmd) do |stdin, stdout, stderr, wait_thr|
    return {
      pid: wait_thr.pid,
      exit_status: wait_thr.value.to_i,
      stdout: stdout.read,
      stderr: stderr.read
    }
  end
end