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Install MiddleMan on Ubuntu 20.04

This article covers the installation of ruby, middleman, and related gems on Ubuntu 20.04 LTS Linux system. In fact, Middleman is a Ruby-powered static site generator which follows an easy-first approach to building static sites. It has powerful features for maintaining static blogs, like easy tag generation, quick commands for listing categorized articles and pagination.

You can install Middleman with Ruby using this command: 

$ gem install middleman

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Linux vmstat Command

This article covers how to use the vmstat command in Linux. In fact, vmstat command in Linux/Unix is a performance monitoring command of the system as it gives the information about processes, memory, paging, block IO, disk, and CPU scheduling. All these functionalities makes the command vmstat also known as virtual memory statistic reporter.

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Linux su Command - With Examples

This article covers how to use the su command in Linux and the difference between su and sudo. In fact, the su command changes the current user ID to that of the superuser, or another specified user.

su command syntax is:

su [options] [username]

If no username is specified, su defaults to becoming the superuser (root).


options to use with the su command:

  • Username – Replace username with the actual username you want to log in with. This can be any user, not just root.
  • –c or –command [command] – Runs a specific command as the specified user.
  • – or –l or –login [username] – Runs a login script to change to a specific username.  You’ll need to enter a password for that user.
  • –s or –shell [shell] – Allows you to specify a different shell environment to run in.
  • –h or –help – Show the help file for the su command.
  • –p or ––preserve–environment – Preserve the shell environment (HOME, SHELL, USER, LOGNAME).


How to enable the Root User in Ubuntu ?

To enable the root user account on Ubuntu, use the following command to set a password for it. Bear in mind that Ubuntu recommends against this:

$ sudo passwd root

Sudo will prompt you for your current user account's password before you can set a new password. Use your new password to log in as root from a terminal login prompt or with the su command. You should never run a full graphical environment as the root user – this is a very poor security practice, and many programs will refuse to work.

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Install ePhoto on Ubuntu 20.04

This article covers how to install and remove ePhoto image viewer on your Ubuntu 20.04 LTS.

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Install and Use Hugo Static Website Generator on Ubuntu 20.04

This article covers the best methods to install Hugo on the Ubuntu 20.04 system. In fact, Hugo is an open-source static website generator written in Go language and designed for small projects and informative sites. After installation on your Linux system, you can use it to create a new static website.

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Install Nethogs on Ubuntu 20.04 - Follow these steps ?

This article covers how to install and use the Nethogs utility in Ubuntu 20.04 LTS. In fact, nethogs is a networking monitoring tool for Linux capable of monitoring any specific network interface or all the networking interfaces on your computer. Also, it shows bandwidth usage per process on your computer in real time.


How to install nethogs on Ubuntu / Debian ?

nethogs is not installed on Ubuntu/Debian by default. But, it is available in the official package repository of Ubuntu/Debian.

1. First, update the APT package manager cache with the following command:

$ sudo apt update

2. Now, install nethogs with the following command:

$ sudo apt install nethogs

3. Now, to check whether nethogs is working, run the following command:

$ nethogs -V

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