diff --git a/releng/releng_build_isojigdo.conf.template b/releng/releng_build_isojigdo.conf.template
index 5f22fc69..1b23101c 100644
--- a/releng/releng_build_isojigdo.conf.template
+++ b/releng/releng_build_isojigdo.conf.template
@@ -1,5 +1,5 @@
 # *** Set your paths, see below
-# *** Expected location is $HOME/releng_build_isojigdo.conf
+# *** Expected location is $HOME/.libburnia-releng/releng_build_isojigdo.conf
 # *** Then a run of 'releng_build_isojigdo -rc' will pick it up
 
 # xorriso executable to be tested
diff --git a/releng/releng_print_size b/releng/releng_print_size
index d46b257b..7bdb9dd0 100755
--- a/releng/releng_print_size
+++ b/releng/releng_print_size
@@ -5,7 +5,7 @@ set -e
 START_DIR_DONT_CHANGE=`pwd`
 SELF=$(basename "$0")
 # required config items
-RELENG_XORRISO=/usr/bin/xorriso
+RELENG_XORRISO=""
 RELENG_GENISOIMAGE=/usr/bin/genisoimage
 RELENG_MKISOFS=/usr/bin/mkisofs
 
@@ -13,7 +13,7 @@ RELENG_MKISOFS=/usr/bin/mkisofs
 CONFFILE=${HOME}/.libburnia-releng/${SELF}.conf
 GEN_DATA_DIR=releng_generated_data/${SELF}
 
-UPPER=4
+UPPER=32
 KEEP=0
 
 #####################################################################
@@ -26,7 +26,7 @@ Usage:
  $0 -rc [-keep]
 
 # without using a config file
- $0 your_own_options_here
+ $0 TODO: not ready yet
 
 # cleanup test generated data directory and exit
  $0 -cleanup
@@ -34,16 +34,70 @@ HLP
 }
 
 #####################################################################
-print_help
-#if [ ! -x "${XOR}" ]; then
-# printf "$0: Not found or not an executable: $XOR\n"
-# exit 50
-#fi
+# cleanup
+if [ "${1}" == "-cleanup" ]; then
+ cd "${START_DIR_DONT_CHANGE}" || exit 80
+ if [ -d "${GEN_DATA_DIR}" ]; then
+    rm -rf ${GEN_DATA_DIR}
+    printf "${SELF}: removed %s\n" ${GEN_DATA_DIR}
+ else
+    printf "${SELF}: ${GEN_DATA_DIR} does not exist.\n"
+ fi
+ exit 0
+fi
+
+# help
+if [ ! "${1}" ]; then print_help && exit 10; fi
+# config file
+if [ "${1}" == "-rc" ]; then
+ if [ -e ${CONFFILE} ]; then
+  . ${CONFFILE}
+  printf "${SELF}: Using config file %s\n" ${CONFFILE}
+ else
+  echo -e "\n${SELF}: Config file ${CONFFILE} not found.\n" && exit 20
+ fi
+ if [ "${2}" == "-keep" ]; then KEEP=1; fi
+# command line args
+elif [ "${2}" ]; then
+ RELENG_XORRISO="${2}"
+ if [ "${3}" == "-keep" ]; then KEEP=1; fi
+# the rest
+else
+ print_help && exit 30
+fi
+
+# data dir
+if [ -d "${GEN_DATA_DIR}" ]; then
+ printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
+ printf "\n${SELF}: use '${SELF} -cleanup' to remove.\n"
+ exit 2
+else
+ mkdir "${GEN_DATA_DIR}"
+fi
+
+if [ "${RELENG_XORRISO}" == "" ]; then
+ echo -e "\n${SELF}: xorriso_cmd is required\n"
+ exit 40
+fi
+
+if [ ! -x "${RELENG_XORRISO}" ]; then
+ printf "${SELF}: Not found or not an executable: $RELENG_XORRISO\n"
+ exit 50
+fi
+
+# all must be set at this point
+printf "${SELF}: Config items:"
+printf "\n\txorriso_cmd=${RELENG_XORRISO}\n"
 
 # xorriso version details, incl. underlying libraries
-# "${XOR}" -version
-
+"${RELENG_XORRISO}" -version
+if ! "${RELENG_XORRISO}" -version | grep libjte >/dev/null 2>&1; then
+ printf "\n${SELF}: JTE not supported with this xorriso build. Install jigit and rebuild."
+ printf "\n${SELF}: See http://www.einval.com/~steve/software/JTE/\n"
+ exit 51
+fi
 
+################################################
 printf "${SELF}: Generating sample tree\n"
 for ((i1=0; i1 < ${UPPER}/4; i1++))
 do
@@ -73,10 +127,11 @@ if [ -x ${RELENG_MKISOFS} ]; then
   time ${RELENG_MKISOFS}             -quiet -print-size ${GEN_DATA_DIR}
 fi
 
-cd ${START_DIR_DONT_CHANGE} || exit 2
-
-rm -rf ${GEN_DATA_DIR}
+if [ ${KEEP} -eq 0 ]; then
+ cd ${START_DIR_DONT_CHANGE} || exit 2
+ rm -rf ${GEN_DATA_DIR}
+fi
 
 printf "\n${SELF}: FAIL: SCRIPT NOT COMPLETED YET\n"
 exit 31
-exit 0
+
diff --git a/releng/releng_print_size.conf.template b/releng/releng_print_size.conf.template
new file mode 100644
index 00000000..2c2a6ac6
--- /dev/null
+++ b/releng/releng_print_size.conf.template
@@ -0,0 +1,6 @@
+# *** Set your paths, see below
+# *** Expected location is $HOME/.libburnia-releng/releng_print_size.conf
+# *** Then a run of 'releng_print_size -rc' will pick it up
+
+# xorriso executable to be tested
+RELENG_XORRISO=/path/to/xorriso