======bash======
=====Nützlichkeiten======
====Rechnen mit der bash====
$((1 + 1))
====Preset-Variablen in der bash====
* ${?}: Returncode des letzten ausfgeführten Programms
=====Template für bash-scripts=====
#!/bin/bash
#Usage: scriptname and arguments/options
#Purpose: short description
#Responsible: name of author
#Licence: as far as possible GPL v2
#user-definable vars
#
#do not mess behind this line
#
#preset vars
#functions
#main part
#clean up