bash

$((1 + 1))

• ${?}: Returncode des letzten ausfgeführten Programms

#!/bin/sh
#Usage:         scriptname and arguments/options
#Purpose:       short description
#Responsible:   name of author <email>
#Licence:       as far as possible GPL v2

#user-definable vars

#
#do not mess behind this line
#

#preset vars

#functions

#main part

#clean up