Parameter MAX_FILES

SRG-3/createImages

+#!/bin/bash
+#
+# Rolf Niepraschk <Rolf.Niepraschk@ptb.de>, 2017-04-03
+#
+# neue Messgeräte-Bilder mit zufälliger Anzeige
+#
+# Parameter1 = Anzahl der erzeugten Bilddateien
+# Parameter2 entfällt!
+
 MAIN="SRG-3" # device name
 IMAGE_DIR=./images
+MAX_DIGITS=5 # do not edit!
+MAX_FILES=10 # do not edit!
+NUMBER_OF_DIGITS=$MAX_DIGITS
+
+if [ -n "$1" ]; then
+  MAX_FILES=$1
+  if [ -n "$2" ]; then
+    NUMBER_OF_DIGITS=$2
+  fi  
+fi
+
+if (( $NUMBER_OF_DIGITS > $MAX_DIGITS )); then
+  NUMBER_OF_DIGITS=$MAX_DIGITS
+else 
+  if (( $NUMBER_OF_DIGITS < 1 )); then
+    NUMBER_OF_DIGITS=1
+  fi
+fi 
 
 rm -rf "$IMAGE_DIR"
 mkdir -p "$IMAGE_DIR"
-MAX_FILES=10 
 
 # https://stackoverflow.com/questions/296536/how-to-urlencode-data-for-curl-command
 urlEncode() {