Manage files with variables...

xymon/plugins/client/ext/smartoverall

@@ -32,6 +32,10 @@ c_reset='\033[0m'
 
 plugin_name=$(basename "${0}")
 
+plugin_result="/tmp/dres"
+plugin_state="/tmp/dcheck"
+device_list="/tmp/dscan"
+
 # ]]]
 
 # Functions
@@ -105,15 +109,15 @@ choose_correct_type() {
 ## ]]]
 
 # Create or empty previous files
-true > /tmp/dres
-true > /tmp/dcheck
-true > /tmp/dscan
+true > "${plugin_result}"
+true > "${plugin_state}"
+true > "${device_list}"
 
 # Get the list of all available devices
-smartctl --scan >> /tmp/dscan
+smartctl --scan >> "${device_list}"
 
 # If the file is not empty
-if test -s /tmp/dscan; then
+if test -s "${device_list}"; then
 	while IFS= read -r LINE; do
 		## Get device path
 		DISK=$(echo "${LINE}" | cut -d" " -f1)
@@ -184,7 +188,7 @@ https://www.smartmontools.org/wiki/FAQ#SmartmontoolsDatabase"
 		fi
 
 		## Avoid duplicate device
-		if ! grep -q "${DID}" /tmp/dres; then
+		if ! grep -q "${DID}" "${plugin_result}"; then
 			## For summary
 			echo "${COLOR} $DISK ${TYPE}"
 
@@ -200,22 +204,22 @@ https://www.smartmontools.org/wiki/FAQ#SmartmontoolsDatabase"
 				echo "------------------------------------------------------------"
 				echo ""
 				echo ""
-			} >> /tmp/dres
+			} >> "${plugin_result}"
 	fi
-	done < /tmp/dscan >> /tmp/dcheck
+	done < "${device_list}" >> "${plugin_state}"
 
 # If the file is empty
 else
-	echo "1&red Error while scanning devices with smartctl" >> /tmp/dcheck
+	echo "1&red Error while scanning devices with smartctl" >> "${plugin_state}"
 fi
 
 # Set the global color according to the highest alert
-COLOR=$(< /tmp/dcheck awk '{print $1}' | sort | uniq | head -1 | cut -c3-)
+COLOR=$(< "${plugin_state}" awk '{print $1}' | sort | uniq | head -1 | cut -c3-)
 
 # Send informations to Xymon server
 $XYMON "${XYMSRV}" "status ${MACHINE}.${plugin_name} ${COLOR} SMART health check
 
-$(< /tmp/dcheck cut -c2-)
+$(< "${plugin_state}" cut -c2-)
 
 ==================== Detailed status ====================
 
@@ -223,6 +227,6 @@ $(cat /tmp/dres)
 "
 
 # Clean temp files
-rm -f -- /tmp/dres /tmp/dcheck /tmp/dscan
+rm -f -- "${plugin_result}" "${plugin_state}" "${device_list}"
 
 exit 0