diff --git a/cluster/sge.enable.host.queue.sh b/cluster/sge.enable.host.queue.sh
index fa4bc8e..2913f72 100755
--- a/cluster/sge.enable.host.queue.sh
+++ b/cluster/sge.enable.host.queue.sh
@@ -99,6 +99,8 @@ ${sge_hostname} is the current host."
 		CHECK_UPGRADE="0"
 		## Enable to verify if upgrades are running
 		CHECK_PROCESS="0"
+		## Enable to watch if some files are present
+		CHECK_FILE="0"
 	else  ## In case of a remote host
 		debug_message "define_vars − \
 ${sge_hostname} is not the current host."
@@ -112,6 +114,8 @@ ${sge_hostname} is not the current host."
 		CHECK_UPGRADE="1"
 		## Disable process checking (remote host, asked behaviour,…)
 		CHECK_PROCESS="1"
+		## Disable files monitoring
+		CHECK_FILE="1"
 	else
 		## Ensure to define a value
 		FORCE_MODE="1"
@@ -129,6 +133,9 @@ ${sge_hostname} is not the current host."
 	## List of process pattern to monitor
 	maco_proc_pattern="(/opt/maco/bin/maco.autoupdate.sh)"
 	apt_proc_pattern="(aptitude.*full-upgrade|/usr/bin/dpkg.*--configure|dpkg-deb|/bin/sh /usr/lib/needrestart/dpkg-status)"
+
+	## List of files to monitor
+	file_nologin_path="/etc/nologin"
 }
 # }}}
 is_current_host() {                                             # {{{
@@ -213,6 +220,28 @@ procs running (with the pattern: ${RED}${local_proc_pattern}${COLOR_DEBUG}) on t
 
 	return "${return_proc_running}"
 
+}
+# }}}
+is_file_present() {                                      # {{{
+
+	local_file_path="${1}"
+
+	## File doesn't exist by default
+	return_is_file_present="1"
+
+	### Check if the file exists
+	if [ -f "${local_file_path}" ]; then
+		return_is_file_present="0"
+		debug_message "is_file_present − \
+The file ${RED}${local_file_path}${COLOR_DEBUG} exists."
+	else
+		return_is_file_present="1"
+		debug_message "is_file_present − \
+The file ${RED}${local_file_path}${COLOR_DEBUG} doesn't exist."
+	fi
+
+	return "${return_is_file_present}"
+
 }
 # }}}
 is_queue_enable() {                                             # {{{
@@ -361,6 +390,14 @@ main() {                                                        # {{{
 			&& exit 0
 	fi
 
+	## If we need to watch files
+	if [ "${CHECK_FILE}" -eq "0" ]; then
+		## If nologin file exist
+		### Exit
+		is_file_present "${file_nologin_path}" \
+			&& exit 0
+	fi
+
 	## Simple debug message with color to valid current variables
 	debug_message "main − Try to manage \
 SGE queue(s): ${RED}${sge_queues_name_print:=/dev/null}${COLOR_DEBUG}\