caesar is a really simple caesar cipher.

build the program

in the caesar directory run the command

#+BEGIN_SRC sh make #+END_SRC

run the program

#+BEGIN_SRC sh ./caesar -f test2.txt -s 10 #+END_SRC

#+RESULTS:

QXE Owkmc sc Pboo!

#+BEGIN_SRC sh ./caesar -f test2.txt -s 10 | ./decrypt #+END_SRC