How to Install Htop on Rocky Linux 9

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Htop is an excellent tool for anyone who wants a closer look at what’s happening inside their computer. It’s a text-based application, so it’s easy to use and doesn’t require fancy graphics. And best of all, it’s completely free and open-source! With Htop, you can see all the processes running on your system and other information like memory usage. You can also customize the UI to change colors or add different widgets. So if you’re interested in learning more about your computer’s work or want a visual way to see what’s going on, check out Htop!

The following tutorial will teach you how to install Htop Interactive Process Viewer on Rocky Linux 9 on a workstation desktop or headless server using the command line terminal.

Update Rocky Linux

First, before proceeding, update your system to ensure no conflicts occur during the installation.

sudo dnf upgrade --refresh

Install Htop Interactive Viewer

By default, Rocky Linux does not have Htop available from its appstream, so that you will need the EPEL repository first.

Enable EPEL Repository

First, enable the CRB repository.

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sudo dnf config-manager --set-enabled crb

Next, install EPEL using the following (dnf) terminal command.

sudo dnf install \
    https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm \
    https://dl.fedoraproject.org/pub/epel/epel-next-release-latest-9.noarch.rpm

Install Htop

To proceed with the installation, use the following command.

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sudo dnf install htop -y

Confirm the installation and version build using the htop –version command.

htop --version

Example output:

[joshua@rocky-linux-9 ~]$ htop --version
htop 3.2.1

How to use Htop – Terminal Commands

As the name suggests, use the following command to bring up Htop in your terminal.

htop

Example output:

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How to Install Htop on Rocky Linux 9

This is a standard overview of your system, which would suit most users who need to check quickly on the system stats.

Further options can be added, such as some standard parameters below.

ParameterFunction

-d
–delay= 10
Specify the update rate in 1/10 seconds
-C
–no-color
–no-color
Start without colors
-h
–help
Show quick help
-u
–user=username
Show only processes of the specified user
-s
–sort-key
Sort by a specific column. A list of the permitted column names can be htop -s help output with ” “.
-v
–version
Show Htop version

One of the most common parameters is delaying the update frequency of Htop, as many have the application constantly running to monitor system or network performances.

htop -d 10

As mentioned above, this has added a ten-second delay, but you can specify anything you want in seconds.

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Htop Keyboard Shorts

Below is a list of the most commonly used shortcuts.

KeysFunction
← , ↑ , → , ↓Scroll through the process list
⇧ + URemove all tags
. or ,Incremental search for the PID
F1 , ? , HShow help
UShow processes of a user
F2 , ⇧ + SOpen setup and change settings
⇧ + HShow/hide user  threads
F3, ⇧ + /Incremental process name search
⇧ + KShow/hide kernel threads
F4, \Filter by name
⇧ + F.Pin the cursor to a process
F5 , TActivate / deactivate tree view
+ , –Expand/collapse the tree
F6, >Select the column to sort
⇧ + PSort processes by CPU usage
F7Decrease Nice value
⇧ + MSort processes by memory usage
F8Increase Nice value
⇧ + TSort processes by the time
F9, KEnd the process or processes of a day
LOpen files with lsof open
F10 , Q , Ctrl + C   break up
SSystem calls to stracetrace
Space barTag process
⇧ + LTrack library ltracecalls
II / O control

How to Remove (Uninstall) Htop

To remove Htop from your system is straightforward. Use the following command.

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sudo dnf autoremove htop -y

It is advised to keep EPEL installed, as this repository provides many alternative packages you may require in the future.

Comments and Conclusion

If you are looking for a no-frills, easy-to-use process monitor that can quickly show you the processes and applications consuming your system resources, Htop is an excellent option. While similar software options are available, such as Glances System Monitor, Htop has been one of the most popular Linux distros for local monitoring for many years.

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