This article is the continuation of our Linux system monitoring series, today we’re talking about the most popular monitoring tool called htop, which is just reached to version 2.0.2 and comes with some cool new features.
Htop is an interactive real time process monitoring application for Linux/Unix like systems and also a handy alternative to top command, which is default process monitoring tool that comes with pre-installed on all Linux operating systems.
Htop has numerous other user-friendly features, which are not available under top command and they are:
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).
-------------- 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
-------------- For RHEL/CentOS 7 -------------- # wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-9.noarch.rpm # rpm -ihv epel-release-7-9.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
Fedora users can easily install htop using Fedora Extras repository by typing:
# yum install htop # dnf install htop [On Fedora 22+ releases]
In Debian and Ubuntu, you can fetch htop by typing:
# sudo apt-get install htop
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.
# 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
$ 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
Now run the htop monitoring tool by executing following command on the terminal.
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.
Type tree or t to display processes tree view.
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.
Some of the shortcut and function keys and its functionality to interact with htop.