groovy: command line parameter / argument handling

Hi,

used from C, but there is not argc, argv.

it´s

args (Arry og arguments) and
args.size()  number of arguments

Like this

if ( args.size() != 4  )
  { println "Anzahl Argumente " + args.size()
    println "Usage:  pdf  Gutachten-nr  Datei  Zeile1  Zeile"
    return
  }

def nr = args[0]
def datei = args[1]
def zeile1 = args[2]
def zeile2 = args[3]