My Command Line Template

CommandLineException.cs

using System;
using System.Runtime.Serialization;

namespace MyTool
{
    [Serializable]
    internal class CommandLineException : Exception
    {
        public CommandLineException()
        {
        }

        public CommandLineException(string message) : base(message)
        {
        }

        public CommandLineException(string message, Exception innerException) : base(message, innerException)
        {
        }

        protected CommandLineException(SerializationInfo info, StreamingContext context) : base(info, context)
        {
        }
    }
}

Program.cs

using System;
using System.Diagnostics;
using System.Linq;
using McMaster.Extensions.CommandLineUtils;

namespace MyTool
{
    [Command(Description = "... Description ...")]
    internal class Program
    {
        private static int Main(string[] args)
        {
#if DEBUG
            if (args.Any(a => a == "--debug"))
            {
                args = args.Where(a => a != "--debug").ToArray();
                Console.WriteLine($"Ready for debugger to attach. Process ID: {Process.GetCurrentProcess().Id}.");
                Console.WriteLine("Press ENTER to continue.");
                Console.ReadLine();
            }
#endif

            try
            {
                return CommandLineApplication.Execute<Program>(args);
            }
            catch(CommandLineException clex)
            {
                var oldFg = Console.ForegroundColor;
                Console.ForegroundColor = ConsoleColor.Red;
                Console.Error.WriteLine(clex.Message);
                Console.ForegroundColor = oldFg;
                return 1;
            }
            catch(Exception ex)
            {
                var oldFg = Console.ForegroundColor;
                Console.ForegroundColor = ConsoleColor.Red;
                Console.Error.WriteLine("Unhandled exception:");
                Console.Error.WriteLine(ex.ToString());
                Console.ForegroundColor = oldFg;
                return 1;
            }
        }

        //// If a multi-command app...
        //public void OnExecute(CommandLineApplication app)
        //{
        //    app.ShowHelp();
        //}
    }
}

Nice 👍