Execute third-party programs from Unity

ProcessExecute.cs

using System.IO;

public static class ProcessExecute {

    public static int Execute(string command, string arguments, out string output, out string error, string input = null) {
        var proc = new System.Diagnostics.Process();
        proc.StartInfo.UseShellExecute = false;
        if (!string.IsNullOrEmpty(input))
            proc.StartInfo.RedirectStandardInput = true;
        proc.StartInfo.RedirectStandardError = true;
        proc.StartInfo.RedirectStandardOutput = true;
        proc.StartInfo.FileName = command;
        proc.StartInfo.Arguments = arguments;

        proc.Start();
        if (!string.IsNullOrEmpty(input)) {
            // Unity's old Mono runtime writes a BOM to the input stream,
            // tripping up the command. Ceate a new writer with an encoding
            // that has BOM disabled.
            var writer = new StreamWriter(proc.StandardInput.BaseStream, new System.Text.UTF8Encoding(false));
            writer.Write(input);
            writer.Close();
        }
        proc.WaitForExit();

        output = proc.StandardOutput.ReadToEnd();
        error = proc.StandardError.ReadToEnd();
        return proc.ExitCode;
    }
         
}