diff --git a/bin/sys_refresh_ref_cron.sh b/bin/sys_refresh_ref_cron.sh
index 7349a2c..4b919da 100755
--- a/bin/sys_refresh_ref_cron.sh
+++ b/bin/sys_refresh_ref_cron.sh
@@ -23,6 +23,7 @@
 # Ce script n'accepte *aucune* option
 #
 # @OPT: f:force:force:1/1:false:::
+# @OPT: f:show-only:show-only:1/1:false:::
 #
 #------------------------------------------------------------------------------------------------------------------
 # Liste des erreurs:
@@ -68,6 +69,9 @@
 ## Lorsqu'un cron job est supprimé, forcer une régénération complète des entrées de la base est
 ## donc nécessaire (sys_refresh_ref_cron.sh -force true)
 ##
+## L'option show-only permet de lister les cronjobs installés sur les VM sans les enregistrer
+## dans la base de données.
+##
 ## Les informations de connexion à la base de données doivent être stockées dans
 ## le fichier PGPASSFILE sur sousetsuken au format suivant:
 ##
@@ -176,27 +180,29 @@ function refresh_cronjobs
           COLOR="vert"
         fi
         fct_message ${MESSAGE} -color ${COLOR}
-        if [ ${#CRONJOB} -gt 0 ]; then
-          fct_message "      Checking database:"
-          MINUTES=$(echo ${CRONJOB} | cut -d' ' -f1)
-          HOURS=$(echo ${CRONJOB} | cut -d' ' -f2)
-          DAYS=$(echo ${CRONJOB} | cut -d' ' -f3)
-          MONTHS=$(echo ${CRONJOB} | cut -d' ' -f4)
-          DAYSOFWEEK=$(echo ${CRONJOB} | cut -d' ' -f5)
-          COMMAND=$(echo ${CRONJOB} | cut -d' ' -f6-)
-          REQUEST_ID_PARAMS="host='${VM}' and s_user='${TETALAB_USER}' and minutes='${MINUTES}' and hours='${HOURS}' 
-          and days='${DAYS}' and months='${MONTHS}' and daysofweek='${DAYSOFWEEK}' and command='${COMMAND}'"
-          RESULT=$(psql -q -t -h ${DB_HOST} -U ${DB_USER} -d ${DB_DATABASE} -c "select ID from
-          ref_cron where ${REQUEST_ID_PARAMS};")
-          if [ ${#RESULT} -eq 0 ]; then
-            fct_message "      -> Cronjob not in database, inserting..."
-            REQUEST_INSERT_PARAMS="'${VM}', '${TETALAB_USER}', '${MINUTES}',
-            '${HOURS}', '${DAYS}', '${MONTHS}', '${DAYSOFWEEK}', '${COMMAND}'"
-            psql -q -t -h ${DB_HOST} -U ${DB_USER} -d ${DB_DATABASE} -c "insert into ref_cron
-            (\"host\", \"s_user\", \"minutes\", \"hours\", \"days\", \"months\", \"daysofweek\", \"command\")
-            values (${REQUEST_INSERT_PARAMS});"
-          else
-            fct_message "      -> Cronjob already in database"
+        if [ "${show-only}" == "false" ]; then
+          if [ ${#CRONJOB} -gt 0 ]; then
+            fct_message "      Checking database:"
+            MINUTES=$(echo ${CRONJOB} | cut -d' ' -f1)
+            HOURS=$(echo ${CRONJOB} | cut -d' ' -f2)
+            DAYS=$(echo ${CRONJOB} | cut -d' ' -f3)
+            MONTHS=$(echo ${CRONJOB} | cut -d' ' -f4)
+            DAYSOFWEEK=$(echo ${CRONJOB} | cut -d' ' -f5)
+            COMMAND=$(echo ${CRONJOB} | cut -d' ' -f6-)
+            REQUEST_ID_PARAMS="host='${VM}' and s_user='${TETALAB_USER}' and minutes='${MINUTES}' and hours='${HOURS}' 
+            and days='${DAYS}' and months='${MONTHS}' and daysofweek='${DAYSOFWEEK}' and command='${COMMAND}'"
+            RESULT=$(psql -q -t -h ${DB_HOST} -U ${DB_USER} -d ${DB_DATABASE} -c "select ID from
+            ref_cron where ${REQUEST_ID_PARAMS};")
+            if [ ${#RESULT} -eq 0 ]; then
+              fct_message "      -> Cronjob not in database, inserting..."
+              REQUEST_INSERT_PARAMS="'${VM}', '${TETALAB_USER}', '${MINUTES}',
+              '${HOURS}', '${DAYS}', '${MONTHS}', '${DAYSOFWEEK}', '${COMMAND}'"
+              psql -q -t -h ${DB_HOST} -U ${DB_USER} -d ${DB_DATABASE} -c "insert into ref_cron
+              (\"host\", \"s_user\", \"minutes\", \"hours\", \"days\", \"months\", \"daysofweek\", \"command\")
+              values (${REQUEST_INSERT_PARAMS});"
+            else
+              fct_message "      -> Cronjob already in database"
+            fi
           fi
         fi
       done