--- a/hardware.rst	Fri Jun 19 00:32:30 2015 -0500
+++ b/hardware.rst	Fri Jun 19 00:43:36 2015 -0500
@@ -57,6 +57,7 @@
 ::
 
   $ cat /proc/meminfo
+  $ sudo lshw -class memory
   $ sudo lshw -short -C memory
   $ sudo dmidecode --type memory
 
@@ -140,6 +141,26 @@
   ``smartctl``
                 Show S.M.A.R.T. reports about disk heals.
 
+Fan/temperature.
+================
+
+Detect available sensors::
+
+  $ sudo apt-get install lm-sensors
+  $ sudo sensors-detect
+
+Load corresponding kernel module, like::
+
+  $ sudo modprobe coretemp
+
+Check output::
+
+  $ sudo sensors
+
+HDD temperature through SMART::
+
+  $ sudo hddtemp /dev/sd?
+
 BIOS info.
 ==========