diff --git a/check_deployment b/check_deployment
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+++ b/check_deployment
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+#!/bin/bash
+# ======================================================================
+#
+# NAGIOS CLIENT CHECK :: check deployment
+#
+# ----------------------------------------------------------------------
+# 2023-12-14  v0.1  first lines
+# ======================================================================
+
+. $( dirname $0 )/inc_pluginfunctions
+
+export self_APPVERSION=0.1
+
+sInstalldir=/opt/imldeployment-installer
+
+# ----------------------------------------------------------------------
+# FUNCTIONS
+# ----------------------------------------------------------------------
+
+function showHelp(){
+    local _self; _self=$(basename $0)
+    cat <<EOF
+$( ph.showImlHelpHeader )
+
+Show status of rollouts with IML deployment client on this system.
+See https://os-docs.iml.unibe.ch/imldeployment-client/
+
+SYNTAX:
+$_self [-d DIRECTORY]
+
+OPTIONS:
+    -h or --help   show this help.
+    -d or --dir    set installation dir of iml deployment to find its check skript
+                   default: ${sInstalldir}
+
+EXAMPLE:
+$_self -d /home/deployuser/imlbackup
+                   set a custom directory und run the backup check
+
+EOF
+}
+
+# --- check param -h
+while [[ "$#" -gt 0 ]]; do case $1 in
+    -h|--help)      showHelp; exit 0;;
+    -d|--dir)       sInstalldir=$2; shift ;shift;;
+    *) echo "ERROR: Unknown parameter: $1"; showHelp; exit 1;
+esac; done
+
+sChecker=$sInstalldir/check_deployment.sh
+
+if [ ! -x $sChecker ]; then
+    ph.abort "$sChecker not found - maybe deployment is not installed here. Use param -d to set the install directory."
+fi
+
+result=$( $sChecker )
+rc=$?
+
+if [ $rc -eq 0 ]; then
+    if echo "$result" | grep "^UNKNOWN" 2>/dev/null  
+    then
+        ph.setStatus "unknown"
+    else
+        ph.setStatus "ok"
+    fi
+else
+    ph.setStatus "critical"
+fi
+
+echo "$result"
+
+ph.exit
+
+# ----------------------------------------------------------------------