Lisp Programming Hello-World Example on Gnu/Linux

Hello World

3. 3. Making Hello World

   Create an Common LISP Hello World
   First, I make a directory to keep things well ordered:

   mkdir ~/Documents/cLisp

   Next Change to the Target cLisp directory with:

   cd ~/Documents/cLisp

   Now Edit the Hello World file:

   nano helloworld.lisp

   Here for simplicity I’ll make use of the nano editor…
   So Append this Common LISP content:

   (defun hello-world ()
   (format t "Hello, world!"))
   

   Ctrl+x to Save & Exit from nano editor :)

4. 4. Running Hello World

   To Execute the Common LISP Hello World
   First, give Execution Permissions to example:

   chmod +x helloworld.lisp

   Then Launch the Lisp Cli Interpreter with:

   clisp

   
   Finally, Load and Run the example:

   1> load("helloworld.lisp")
   ;; Loading file helloworld.lisp ...
   ;; Loaded file helloworld.lisp
   T
   

   Then to Run the Common LISP hello-world Function:

   2> (hello-world)
   Hello world!
   NIL
   

   In the end to Quit the Common LISP shell hits Ctrl+z.