Pig

Pig is a programming language that has only one keyword: the word PIG.

Usage
Pig can be used to create text files. To code in Pig, write the title of your text file, then write, then write the contents of the text file.

Hello, World!
The following code creates a text file named "Hello, World!" which contents are "Hello, World!". Hello, World!PIGHello, World!

Cat program
Pig cannot create the Cat program because it is output only.

Quine
Pig cannot create a Quine either.

The Pig series
The Pig series is a a series of programming languages that are all based on Pig.

The languages are Pig, SickPig, DeadPig, QuinePig and DeafPig.

Interpreter
Simple interpreter written in C#. using System; using System.IO; class Pig {    static int Main(string[] args) {        try {            if (args.Length < 1) {                Console.WriteLine("USAGE: {0} ", Environment.GetCommandLineArgs[0]); return 1; }            string[] input = File.ReadAllText(args[0]).Split(new string[] { "PIG" }, 2, StringSplitOptions.None); if (input.Length < 2) {                Console.WriteLine("File must contain the string 'PIG'."); return 2; }            File.WriteAllText(input[0], input[1]); return 0; }        catch (IOException ex) {            Console.WriteLine(ex.Message); return 3; }    } }