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


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

Various Programs in Pig

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.


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.


Simple interpreter written in C#.

using System;
using System.IO;

class Pig
    static int Main(string[] args)
            if (args.Length < 1)
                Console.WriteLine("USAGE: {0} <file>", 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)
            return 3;

Simple Interpreter written in Python:

def run_pig(code):
    assert type(code) is str, 'ERROR: Code must be a string.'
    assert 'PIG' in code, 'ERROR: Code must contain "PIG".'
    file_name, file_text = code.split('PIG', 1)
    file = open(f'{file_name}.txt', 'w')

See also