Devaughn Code




$vi helloworld.s

#Assembly - Hello world in Linux IA-32 assembly
#Assembler: gas (GNU assembler)
#Linker: ld (GNU ld)
.section .data
helloworld:
   .ascii "Hello world.\nThanks for visiting.\n"

.section .text
.globl _start
_start:
   movl $1, %ebx
   movl $helloworld, %ecx
   movl $34, %edx
   movl $4, %eax
   int  $0x80
   movl $1, %eax
   movl $0, %ebx
   int  $0x80

$as -o helloworld.o helloworld.s
$ld -o helloworld helloworld.o
$./helloworld

$vi helloWorld.c

//C - Hello world in C
//Compiler: GCC
#include <stdio.h>
int main(int argc, char *argv[]) {
    printf("Hello world.\nThanks for visiting!\n");
}

$gcc -o helloWorld helloWorld.c
$./helloWorld

$vi helloWorld.cc

//C++ - Hello world in C++
//Compiler: GCC
#include <iostream>
int main() {
    std::cout << "Hello world.\nThanks for visiting.\n";
}

$g++ -o helloWorld helloWorld.cc
$./helloWorld

$vi HelloWorld.java

//Java - Hello world in Java
//Compiler: Java compiler (javac via JDK)
public class HelloWorld {
     public static void main(String[] args) {
          System.out.println("Hello world.\nThanks for visiting.");
     }
}

$javac HelloWorld.java
$java HelloWorld

$vi helloWorld.lisp

;Lisp - Hello world in lisp
;Interpreter: CLISP
(print "Hello World")

$clisp helloWorld

$vi helloWorld.tcl

#Tcl/Tk - Hello world in Tcl
#Interpreter: Wish
#!/usr/bin/wish
button .b -text "Hello World!" -command exit
pack .b

$wish helloWorld.tcl

$vi helloWorld.lua

#Lua - Hello world in Lua
#Interpreter: Lua
print("Hello World!")

$lua helloWorld.lua

$vi helloWorld.pl

#Perl - Hello world in Perl
#Interpreter: Perl
print "Hello World!"

$perl helloWorld.pl

$vi helloWorld.py

#Python - Hello world in Python
#Interpreter: Python version 2
print "Hello World!"

$python helloWorld.py

$vi helloWorld.py

#Python - Hello world in Python
#Interpreter: Python version 3
print( "Hello World!")

$python3 helloWorld.py

$vi helloWorld.xml

<!--XML - Hello world message in XML-->
<?xml version = 1.0"?>
<message>
   <to>you visitors</to>
   <from>Derek Devaughn</from>
   <subject>A simple message</subject>
   <text>Hello World!</text>
</message>


$vi helloWorld.html

<!--HTML - Hello world message in HTML-->
<!DOCTYPE html>
<html>
   
   <head>
      <meta charset="utf-8">
      <title>A simple message</title>
   </head>

   <body>
        Hello World!
   </body>
</html>


$vi helloWorld.php

//PHP - Hello world in PHP
//Interpreter: PHP
<?php
   echo "Hello World!\n";
?>

$php helloWorld.php

$vi helloWorld.sh

//Bash - Hello world in bash
//Interpreter: Bash
#!/bin/bash
echo "Hello World!"

$chmod +x hello.sh
$./hello.sh

$vi helloWorldJS.html

<!--JavaScript - Hello world message in JavaScript embedded in HTML-->
<!DOCTYPE html>
<html>
   
   <head>
      <meta charset="utf-8">
      <title>A simple message</title>
   </head>

   <body>
      <script type="text/javascript">
	  document.write("Hello World!")
      </script>

      <noscript>
	  Sorry your browser doesn't support (or disabled) my JavaScript greeting.
      </noscript>
   </body>
</html>


#One way to print Hello World in Awk

$echo '"Hello World!"' > helloAwk
$awk '{print}' helloAwk