static void PrintUsage()
{
Console.WriteLine("-o <oledtypenr> Select oled display type (Example: 3)");
Console.WriteLine("-d <netdev> Select network device to monitor (Example: eth0)");
Console.WriteLine("-t <minutes> Sets the long time running graph width in minutes (Example(24hr): 1440)");
Console.WriteLine("-q Suppress console outputs");
Console.WriteLine("");
Console.WriteLine(@"Available oled types :
Adafruit_SPI_128x32 = 0,
Adafruit_SPI_128x64 = 1,
Adafruit_I2C_128x32 = 2,
Adafruit_I2C_128x64 = 3,
Seeed_I2C_128x64 = 4,
Seeed_I2C_96x96 = 5,
SH1106_I2C_128x64 = 6");
}