diff --git a/deploy/edgemax.sh b/deploy/edgemax.sh
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+++ b/deploy/edgemax.sh
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+#!/bin/bash
+
+################################################################
+###
+###  A script to deploy Let's Encrypt certificate
+###  on Edgemax routers.
+###
+################################################################
+
+#This file name is "edgemax.sh"
+#So, here must be a method   edgemax_deploy()
+#Which will be called by acme.sh to deploy the cert
+#returns 0 means success, otherwise error.
+
+########  Public functions #####################
+function atexit() {
+ #closes CLI session
+ cli-shell-api teardownSession
+ _debug EXITCODE: $1
+ return $1
+}
+
+
+#domain keyfile certfile cafile fullchain
+edgemax_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  ### 'lighttpd_pem' - certificate file configured for your Edgemax GUI
+
+  lighttpd_pem=/config/auth/le-cert.pem
+
+  _info  "$(__green "EdgeMax Certificate Path: $lighttpd_pem")"
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+  _info "Generating PEM file for lighttpd"
+  sudo sh -c "cat ${_ccert} ${_ckey} > ${lighttpd_pem}"
+
+  _info  "$(__green "Checking EdgeMax Config for SSL Settings: $lighttpd_pem")"
+  vals=$( cli-shell-api returnEffectiveValue service gui cert-file)
+  certfile=$vals
+  if [ "$lighttpd_pem" != "$certfile" ]; then
+   _debug "Current Edgemax Certfile" "$certfile"
+   _info "Certfile is not set to $lighttpd_pem"
+
+   # Obtain session environment
+   session_env=$(cli-shell-api getSessionEnv $PPID)
+
+   # Setup the session
+   cli-shell-api setupSession
+
+   # Verify Session Started
+   cli-shell-api inSession
+   if [ $? -ne 0 ]; then
+    _err "Something went wrong starting CLI Session!"
+    atexit 1
+   fi
+   SET=${vyatta_sbindir}/my_set
+   COMMIT=${vyatta_sbindir}/my_commit
+   SAVE=${vyatta_sbindir}/vyatta-save-config.pl
+   _info "Setting Certificate parameter."
+   $SET service gui cert-file /config/auth/le-cert.pem
+   $COMMIT
+   $SAVE
+   else
+    _info "EdgeMax cert-file already set to $lighttpd_pem"
+   fi
+  _info Restarting lighttpd
+  sudo kill -SIGTERM $(cat /var/run/lighttpd.pid)
+  sudo /usr/sbin/lighttpd -f /etc/lighttpd/lighttpd.conf
+
+ atexit 0
+
+}