using System;

namespace GetSystemCommandOutput {
    class Program {
        static void Main(string[] args) {
            System.Diagnostics.Process process = new System.Diagnostics.Process();
            System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo();
            startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
            startInfo.FileName = "cmd.exe";
            startInfo.Arguments = "/c echo Hello World";
            startInfo.RedirectStandardOutput = true;
            startInfo.UseShellExecute = false;
            process.StartInfo = startInfo;
            process.Start();

            string output = process.StandardOutput.ReadToEnd();
            Console.WriteLine("Output is {0}", output);
        }
    }
}