Install Htop 2.0 – Linux Process Monitoring for RHEL, CentOS & Fedora

Htop is an Associate interactive real time method watching application for Linux/Unix like systems and additionally a handy different to high command, that is default method watching tool that comes with pre-installed on all UNIX system operating systems.

Htop has numerous other user-friendly features, which are not available under top command and they are:

  1. In htop you can scroll vertically to view the full process list, and scroll horizontally to view the full command lines.
  2. It starts very quickly as compared top, because it doesn’t wait to fetch data during startup.
  3. In htop you can kill more than one processes at once without inserting their PIDs.
  4. In htop you no longer needed to enter process number or priority value to re-nice a process.
  5. Press “e” to print the set of environment variables for a process.
  6. Use mouse to select list items.

Install Htop Using Binary Packages in Linux

Important: Following binary installation, will give you the available htop version 1.0.3 or 1.0.2 in most distributions, so if you’re looking for Htop 2.0.2 version, then I recommend you to follow Source installation section as shown below:

To install Htop on RHEL 7/6/5 and CentOS 7/6/5, your system must have EPEL repository installed and enabled, to do so run the following commands on your respective distributions to install and enable it for your system architecture (32bit or 64bit).

On RHEL/CentOS – 32-bit OS

-------------- For RHEL/CentOS 6 --------------
# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# rpm -ihv epel-release-6-8.noarch.rpm

-------------- For RHEL/CentOS 5 --------------
# wget http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
# rpm -ihv epel-release-5-4.noarch.rpm

On RHEL/CentOS – 64-bit OS

-------------- For RHEL/CentOS 7 --------------
# wget dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpm
# rpm -ihv epel-release-7-11.noarch.rpm 

-------------- For RHEL/CentOS 6 --------------
# wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
# rpm -ihv epel-release-6-8.noarch.rpm

-------------- For RHEL/CentOS 5 --------------
# wget http://download.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
# rpm -ihv epel-release-5-4.noarch.rpm

 

Once EPEL repository has been installed, you can hit the following yum command to fetch and install the htop package as shown.

# yum install htop

On Fedora OS

Fedora users can easily install htop using Fedora Extras repository by typing:

# yum install htop
# dnf install htop      [On Fedora 22+ releases]

On Debian and Ubuntu

In Debian and Ubuntu, you can fetch htop by typing:

# sudo apt-get install htop

Compile and Install Htop from Source Packages

To install Htop 2.0.2 version, you must have Development Tools and Ncurses installed on your system, to do so run the following series of commands on your respective distributions.

On RHEL/CentOS and Fedora

# yum groupinstall "Development Tools"
# yum install ncurses ncurses-devel
# wget http://hisham.hm/htop/releases/2.0.2/htop-2.0.2.tar.gz
# tar xvfvz htop-2.0.2.tar.gz
# cd htop-2.0.2

On Debian and Ubuntu

$ sudo apt-get install build-essential  
$ sudo apt-get install libncurses5-dev libncursesw5-dev
$ wget http://hisham.hm/htop/releases/2.0.2/htop-2.0.2.tar.gz
$ tar xvfvz htop-2.0.2.tar.gz
$ cd htop-2.0.2

Next, run the configure and make script to install and compile htop.

# ./configure
# make
# make install

How do I use htop?

Now run the htop monitoring tool by executing following command on the terminal.

# htop

Htop is having three sections mainly

  1. Header, where we can see info like CPU, Memory, Swap and also shows tasks, load average and Up-time.
  2. List of processes sorted by CPU utilization.
  3. Footer shows different options like help, setup, filter tree kill, nice , quit etc.

Htop Linux Processes Monitoring

Press F2 or S for setup menu > there are four columns i.e Setup, Left Column, Right Column and Available Meters.

Here, you can configure the meters printed at the top of the window, set various display options, select among color patterns and choose which columns are printed in which order.

Htop Setup Screen

Type tree or t to display processes tree view.

Htop Process View in Tree Format

You can refer function keys displayed at footer to use this nifty htop application to monitor Linux running processes. However, we advise to use character keys or shortcut keys instead of function keys as it may have mapped with some other functions during secure connection.

Htop Shortcut and Function Keys

Some of the shortcut and function keys and its functionality to interact with htop.

Descripion                    Function Keys         Shortcut Keys

    help                                  F1                            h

    Setup                                F2                            s

    Search process                   F3                            /

    Invert Sort Order                F4                            |

    Tree                                  F5                            t

    Sort By                              F6                            >

    Nice – (change priority)        F7                            [

    Nice + (change priority)       F8                            ]

    Kill a process                      F9                            k

    Quit                                   F7                            q

Author : ع ـامر

ع ـامر

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