On RHEL/CentOS – 32-bit OS
-------------- For RHEL/CentOS 6 -------------- # wget https://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 https://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 https://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 https://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 https://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 https://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 is having three sections mainly
- Header, where we can see info like CPU, Memory, Swap and also shows tasks, load average and Up-time.
- List of processes sorted by CPU utilization.
- Footer shows different options like help, setup, filter tree kill, nice , quit etc.
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.
Htop Shortcut and Function Keys
Some of the shortcut and function keys and its functionality to interact with htop