IEnumerable<string> redirectedStandardOutput;
 IEnumerable<string> redirectedErrorOutput;
 var exitCodeWithArgument =
     StartProcess(
         "ping",
         new ProcessSettings {
             Arguments = "localhost",
             RedirectStandardOutput = true,
             RedirectStandardError = true
         },
         out redirectedStandardOutput,
         out redirectedErrorOutput
     );

 // Output last line of process output.
 Information("Last line of output: {0}", redirectedStandardOutput.LastOrDefault());

 // Throw exception if anything was written to the standard error.
 if (redirectedErrorOutput.Any())
 {
     throw new Exception(
         string.Format(
             "Errors occurred: {0}",
             string.Join(", ", redirectedErrorOutput)));
 }

 // This should output 0 as valid arguments supplied
 Information("Exit code: {0}", exitCodeWithArgument);