Psensor – A Hardware Temperature Monitoring Tool for Linux

Psensor is a GTK+ (Widget Toolkit for creating Graphical User Interface) based application software that is used to monitor hardware temperature and plot Real-Time graphs from the obtained data for quick review.

Psensor - Linux Hardware Temperature Monitoring
Psensor – Linux Hardware Temperature Monitoring

Features of Psensor

  • Show the temperature of the motherboard, CPU, GPU (Nvidia), and Hard Disk Drives.
  • Show CPU fan speed.
  • Psensor is capable of showing remote server temperature and fan speed.
  • Show Linux CPU usage, as well.
  • In fact, Psensor will detect any supported hardware and report the temperature as text and over a graph, automatically.
  • All the temperatures are plotted in one graph.
  • Alarms and Alerts ensure you don’t miss critical system hardware temperature and fan speed-related issues.
  • It is easy to configure and use.


  • lm-sensor and hddtemp – Psensor depends upon these two packages to get the reports about temperature and fan speed.
  • psensor-server – It is an optional package, which is required if you want to gather information about remote server temperature and fan speed.

Installation of Psensor in Linux

As I said above the Psensor program depends on lm-sensor and hddtemp packages and these two packages must be installed on the system in order to install Psensor.

Install lm-sensors in Linux

Most of the popular Linux distributions offer these two packages from the default repository, but on RHEL-based distributions, you need to install and enable epel-release repository to get these packages.

# yum install epel-release # yum install lm_sensors lm_sensors-devel hddtemp
Note: If you are using Fedora Linux, replace yum with dnf in the above command.

On Debian-based distributions, you can install from the default repository using the following apt command.

$ sudo apt install lm-sensors hddtemp

On Arch and OpenSuse, you can install it as shown.

$ sudo pacman -S lm-sensors hddtemp [On Arch Linux]
$ sudo zypper install lm-sensors hddtemp [On OpenSUSE] 

Install Psensor on Linux

Once these two dependencies are installed on the system, you can install Psensor on Debian-like systems, Arch, and OpenSuse using the following command.

$ sudo apt install psensor [On Debian-based Systems]
$ sudo pacman -S psensor [On Arch Linux]
$ sudo zypper install psensor [On OpenSUSE] 

Unfortunately, on RedHat alike systems, Psensor isn’t available from the default system repository, and you need to compile it from the source as shown below.

# yum install gcc gtk3-devel GConf2-devel cppcheck libatasmart-devel libcurl-devel json-c-devel libmicrohttpd-devel help2man libnotify-devel libgtop2-devel make 

Next, download the most recent stable Psensor (i.e. version 1.2.1) source tarball and compile it using the following commands.

# wget # tar zxvf psensor-1.2.1.tar.gz # cd psensor-1.2.1/ # ./configure # make # make install

Install Psensor Server – optional, which is required only if you want to see the temperature and fan speed of the remote server.

# apt install psensor-server
Note: The Psensor Server package is only available under Debian alike systems, there aren’t any binary or source packages available for RedHat systems.

Psensor – Monitor Linux Hardware Temperature from CLI

It is an optional but suggestive step you should run sensors-detect as root to diagnose the hardware by sensors and type the default option 'Yes' until you know what you are doing.

# sensors-detect
Detect Hardware Sensors in Linux
Detect Hardware Sensors in Linux

Again optional step, but for the suggestive setup you should run sensors, as root to display the temperature of various hardware devices from the command line. All these data will be used for Psensor.

# sensors
Psensor - Monitor Linux Hardware Temperature
Psensor – Monitor Linux Hardware Temperature

Psensor – Monitor Linux Temperature from GUI

Run Psensor from the desktop Application Menu to get the graphical view.

Temperature Hardware Monitoring
Temperature Hardware Monitoring

Check mark all the Sensors to plot the graph. You may notice the color codes.

Plot Graphs of Hardware Temperature
Plot Graphs of Hardware Temperature

Psensor Customization in Linux

Go to Menu PsensorPreferencesInterface. From here, you can have options for Interface related customization, Temperature Unit, and Sensor Table Position.

Psensor Interface Customization
Psensor Interface Customization

Under Menu PsensorPreferencesStartup. From here, you can configure Launch/Hide at Startup and Restore Window Position and Size.

Control Psensor
Control Psensor

Under the Hood Graph (PsensorPreferencesGraph), you may configure Foreground/Background Color, Monitoring Duration, Update Interval, etc.

Psensor Graph Customization
Psensor Graph Customization

You may configure Sensors Settings under (PsensorPreferences → Sensors).

Sensors Settings
Sensors Settings

The last tab (PsensorPreferencesProviders) provides you with Enable/Disable configuration for all the sensors.

Psensor Configuration Control
Psensor Configuration Control

You may do sensor Preferences under (PsensorSensor Preferences).

Give Sensor Name
Give Sensor Name
Give Sensor Color
Give Sensor Color
Set Sensor Threshold
Set Sensor Threshold
Enable Sensor Indicator
Enable Sensor Indicator

Psensor is a very useful tool that lets you see those gray areas of system monitoring which is often overlooked i.e., Hardware temperature monitoring. Overheating, Hardware may damage that particular hardware, and other hardware in the surrounding or may crash the whole system.

No, I am not thinking from a financial perspective. Think of the value of Data that might loose and the cost and time it will take to build the system again. Hence it is always a good idea to have a tool like Psensor beside ourselves to avoid any such risk.

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