Program.cs

using Org.BouncyCastle.Asn1.Cms;
using Renci.SshNet;
using System.IO;

string logDirectory = "logs";

if (args.Length == 1 && args[0].ToLower() == "clear")
{
    if (Directory.Exists(logDirectory))
    {
        string[] files = Directory.GetFiles(logDirectory);
        foreach (string file in files)
        {
            File.Delete(file);
        }
        Console.WriteLine($"{files.Length} fichiers de log sont supp");
    }
    else
    {
        Console.WriteLine("Aucun fichier");
    }

    return;
}

if (!Directory.Exists(logDirectory))
{
    Directory.CreateDirectory(logDirectory);
}

string username;
string ip;
string password;

string date = DateTime.Now.ToString("dd.MM.yyyy");
string hour = DateTime.Now.ToString("HH-mm-ss");

if (args.Length >= 3)
{
    username = args[0];
    ip = args[1];
    password = args[2];
}
else
{
    Console.Write("nom d'utilisateur: ");
    username = Console.ReadLine();

    Console.Write("ip : ");
    ip = Console.ReadLine();

    Console.Write("mdp : ");
    password = Console.ReadLine();
}

Console.WriteLine($"Connexion a {ip}...\n\n");

using (var client = new SshClient(ip, username, password))
{
    client.Connect();
    using SshCommand cmd = client.RunCommand("fastfetch");

    Console.Clear();



    string fileName = $"result_{username}_{date}_{hour}.txt";
    string fullPath = Path.Combine(logDirectory, fileName);

    File.WriteAllText(fullPath, cmd.Result);

    Console.WriteLine($"{fullPath}");
}