Запись

using System.Runtime.InteropServices;
 
[DllImport("msvcrt.dll",EntryPoint = "system",CallingConvention = CallingConvention.Cdecl, SetLastError=true)]
static extern int WinSystem(string command);
 
[DllImport("libc.so.6",EntryPoint = "system",SetLastError = true)] 
static extern int LinSystem(string command);
 
 static void Main(string[] args)
{               
     //  console clear
 
    if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
         WinSystem("cls");
    else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
         LinSystem("clear");
    else
         throw new NotSupportedException();
 }