In this tutorial, we’ll be going over the Linux watch command and how we can utilize it in our Linux administration work. Essentially, the watch command is a utility that allows us to continually execute a command at specific intervals and monitor the differences between the outputs. Why could this be useful? For a lot […]
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In this tutorial, we are going to discuss how to install Apache Kafka on Ubuntu. What is Apache Kafka? Apache Kafka is an open-source stream-processing software platform developed by LinkedIn and donated to Apache Software Foundation, written in Scala and Java. In simple terms, Kafka is a messaging system that is designed to be fast,
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Most of the Linux Distributions don’t allow ‘root’ user also known as superuser by default as a security measure to prevent accidental or intentional changes that could harm the system. Especially in an enterprise setup, this would mean disaster. Instead, it uses a feature called sudo, which allows authorized users to perform administrative tasks without
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In this tutorial, we are going to discuss how to change the user password in Linux. The instructions given below can work on any Linux distribution. The passwd command is used to update or change the user’s authentication token. There are two types of users; normal users, and the root user. The normal user can
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The Linux which command is used to identify the path of executable files. The path is identified by searching it in the path environment variables. Syntax of Linux which is as follows: What is the PATH variable? PATH is an environment variable in Linux and other Unix-like operating systems that tells the shell which directories
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Find command is used to filter objects in the file system. It can be used to find files, directories, files of particular pattern i.e. txt,.php and so on. It can search by file name, folder name, modification date , by permissions and so on. Note: Linux is case sensitive. “File”,”file”,”FiLe”,”FILE” all are different file names
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Linux date command is used to display the system date and time. We can also print the past date, future date or set the date manually. By default, the date command prints the current date of the Linux system. Here I have listed some of the date command options which one can use to have
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The mkdir command in Linux is used to make directories, hence the command is named mkdir. With traditional GUI systems, if you want multiple directories, you have to create one directory at a time. The mkdir is a very flexible and customizable command in this matter. Let’s look at the functionality. Also read: How to
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Let’s have a look at a really simple to use firewall, the UFW firewall. As a system administrator, it is our duty to make sure that the systems we work on are secured from attackers. There are multiple methods to incorporate in terms of network security but the most fundamental one begins with a firewall.
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NOTE: Before reading this article, I would like to inform you that the ifconfig command is outdated, and is not recommended anymore. The ip command is the current replacement for the ifconfig command. Even though this program may be outdated, you may be in a system where you may need this command, so I’ll start
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