virtualisation:integrating-software [NetModule Router Wiki]

Table of Contents

Hello World in C
Hello World shell script
Hello World in Python

Hello World in C

First of all we need to install gcc: GNU Compiler Collection
At the beginning, update the packages by typing
```
 apt-get update 
```
Subsequently install the compiler by typing
```
 apt-get install gcc 
```
Now create and open a .c file using nano editor
```
 nano hello.c 
```

Type following code:

#include <stdio.h> 
int main() 
{
	printf("Hello World");
	return 0; 
}

Save it using Ctrl + O (German keyboard: Strg + O)
Exit using Ctrl + X (German keyboard: Strg + X)
Compile the program using gcc
```
 gcc hello.c -o hello 
```
Type
```
 ls -l 
```
The created file has rights 644. Change it to 755
```
 chmod 755 hello 
```
Type
```
 ./hello 
```
to run the program

Hello World shell script

Create and open file using nano editor
```
 nano helloBash 
```
Type following code:
helloBash
```
#!/bin/bash
echo "Hello World"
```
Save it using Ctrl + O (German keyboard: Strg + O)
Exit using Ctrl + X (German keyboard: Strg + X)
Type
```
 ls -l 
```
The created file has rights 644. Change it to 755
```
 chmod 755 helloBash 
```
Type
```
 ./helloBash 
```
to run the program

Hello World in Python

First of all we need to install Python
At the beginning, update the packages by typing
```
 apt-get update 
```
Subsequently install Python by typing
```
 apt-get install python 
```
Create and open a .py file using nano editor
```
 nano helloPt.py 
```
Type following code:
helloPt.py
```
 print "Hello World" 
```
Save it using Ctrl + O (German keyboard: Strg + O)
Exit using Ctrl + X (German keyboard: Strg + X)
Run the program using
```
 python helloPt.py 
```