Kernel Shell Terminal Commands Notes

Root File Structure bin – binary executables home – users home directory proc – processes dev – devices lib – 32 bit libraries (shared files aka dll) lib64 – 64 bit libraries (shared files aka dll) opt – optional software etc – configuration files Hardware Abstraction Layer Protects the Kernel Terminal aka Shell – Command Line […]

A Brief History of Linux

Introduction In popular usage, “Linux” often refers to a group of operating system distributions built around the Linux kernel. In the strictest sense, though, Linux refers only to the presence of the kernel itself. To build out a full operating system, Linux distributions often include tooling and libraries from the GNU project and other sources. […]

C# – Data Types

Constant or variable data type A data type describes the format and size of (amount of memory occupied by) a data item and defines what types of operations can be performed with the item. C# provides for 15 basic, or intrinsic types, of data, as shown in Table 2-1. 15 basic types – most common […]

Flight Reservation Console App

Download Documentation   [code language=”csharp”] /* Mark Hesser * Nov 13, 2017 * Intro to P&L * Flight Reservation */ using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO; namespace Flight_Reservation_Console { class Program { public static void Main(string[] args) { //Declarations //File Paths string path = Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)).FullName; if (Environment.OSVersion.Version.Major >= 6) […]

P&L Review 3

Loops Loops Allows repeated execution of a statement or block of statements (within curly braces) Types While loop – used to execute the statements 0 or more times, depending on whether the loop control condition is true or false. while (userEntry != “quit”) while (contStr == “Y”) while (counter < userCount) while (num < 999) […]