diff --git a/releng/releng_build_isojigdo b/releng/releng_build_isojigdo
index d15b94e0..88ad7aff 100755
--- a/releng/releng_build_isojigdo
+++ b/releng/releng_build_isojigdo
@@ -12,8 +12,8 @@ RELENG_IMG=""
 RELENG_ISOLINUX_BIN=""
 RELENG_BOOT_CAT=""
 CONFFILE=$HOME/.libburnia-releng/releng_build_isojigdo.conf
-KEEP=0
 GEN_DATA_DIR=releng_generated_data/${SELF}
+KEEP=0
 RES=""
 
 print_help() {
diff --git a/releng/releng_print_size b/releng/releng_print_size
new file mode 100755
index 00000000..d46b257b
--- /dev/null
+++ b/releng/releng_print_size
@@ -0,0 +1,82 @@
+#!/bin/bash
+
+set -e
+
+START_DIR_DONT_CHANGE=`pwd`
+SELF=$(basename "$0")
+# required config items
+RELENG_XORRISO=/usr/bin/xorriso
+RELENG_GENISOIMAGE=/usr/bin/genisoimage
+RELENG_MKISOFS=/usr/bin/mkisofs
+
+# config file
+CONFFILE=${HOME}/.libburnia-releng/${SELF}.conf
+GEN_DATA_DIR=releng_generated_data/${SELF}
+
+UPPER=4
+KEEP=0
+
+#####################################################################
+print_help() {
+ cat << HLP
+Usage:
+ $0 -help
+
+# using a config file ${CONFFILE}
+ $0 -rc [-keep]
+
+# without using a config file
+ $0 your_own_options_here
+
+# cleanup test generated data directory and exit
+ $0 -cleanup
+HLP
+}
+
+#####################################################################
+print_help
+#if [ ! -x "${XOR}" ]; then
+# printf "$0: Not found or not an executable: $XOR\n"
+# exit 50
+#fi
+
+# xorriso version details, incl. underlying libraries
+# "${XOR}" -version
+
+
+printf "${SELF}: Generating sample tree\n"
+for ((i1=0; i1 < ${UPPER}/4; i1++))
+do
+  for ((i2=0; i2 < ${UPPER}/2; i2++))
+  do
+    for ((i3=0; i3 < ${UPPER}; i3++))
+    do
+    mkdir -p ${GEN_DATA_DIR}/DirOne$i1/DirTwo$i2/DirThree$i3
+    touch    ${GEN_DATA_DIR}/DirOne$i1/DirTwo$i2/DirThree$i3/FileOne
+    done
+  done
+done
+
+# Disk cache might play dirty games, so re-run these several times?
+if [ -x ${RELENG_XORRISO} ]; then
+  printf "${RELENG_XORRISO}\n"
+  time ${RELENG_XORRISO} -as mkisofs -quiet -print-size ${GEN_DATA_DIR}
+fi
+
+if [ -x ${RELENG_GENISOIMAGE} ]; then
+  printf "${RELENG_GENISOIMAGE}\n"
+  time ${RELENG_GENISOIMAGE}         -quiet -print-size ${GEN_DATA_DIR}
+fi
+
+if [ -x ${RELENG_MKISOFS} ]; then
+  printf "${RELENG_MKISOFS}\n" 
+  time ${RELENG_MKISOFS}             -quiet -print-size ${GEN_DATA_DIR}
+fi
+
+cd ${START_DIR_DONT_CHANGE} || exit 2
+
+rm -rf ${GEN_DATA_DIR}
+
+printf "\n${SELF}: FAIL: SCRIPT NOT COMPLETED YET\n"
+exit 31
+exit 0
diff --git a/releng/template_new_releng b/releng/template_new_releng
index ee47cbe5..c0ee08be 100755
--- a/releng/template_new_releng
+++ b/releng/template_new_releng
@@ -11,6 +11,7 @@ SELF=$(basename "$0")
 
 # config file
 CONFFILE=${HOME}/.libburnia-releng/${SELF}.conf
+GEN_DATA_DIR=releng_generated_data/${SELF}
 KEEP=0
 
 printf "\n$0: FAIL: SCRIPT NOT COMPLETED YET\n"