don't regenerate package

build.sh

@@ -11,6 +11,13 @@ AMD64="ftp://download.may.co.at/Repository/msoftware/MAYComp/Current/RO/gs900x64
 ICONFILE=${ICON##*/}
 X86FILE=${X86##*/}
 AMD64FILE=${AMD64##*/}
+
+        if [ -e /var/tmp/opsi/upload/$TYPE/${PN}_${VERSION}-${RELEASE}.opsi ]
+        then
+                echo "package ${PN}_${VERSION}-${RELEASE}.opsi already generated"
+                exit 1
+        fi
+
 OUT=$(mktemp -d /tmp/output.XXXXXXXXXX) || { echo "Failed to create temp dir"; exit 1; }
 mkdir $OUT/$PN
 cp -Rv OPSI CLIENT_DATA $OUT/$PN