April 2021

In Linux-type systems, the “hdparm” command tool is used to provide the interface for kernel-supported devices. It is to display the drive disk statistics and set hardware parameters and testing performance. This utility allows the user to…

Blank lines are not always desirable, and you might feel the need to leave them out and only remain with the lines that contain text. Linux offers a couple of text manipulation expressions that you can use to omit or remove blank lines.…

Linux comes with different utilities that allow the device to be rebooted, stopped, or turned off by a system administrator. To run commands, one must be a root or group member. The “shutdown” is employed to shut down and restart our…

In the Linux operating system, tons of command-line tools are used to get user’s details from a database. So, here’s one of the commands, which is called “getent”. The “getent” is a short form of “get entries from the administrative…

The “expr” is a Linux command-line utility that evaluates and displays the output of an expression. It calculates integer and string expressions, including regular expressions that fit patterns. It stops the invoking command-line shell…

In Linux, there is user and groups; users use the system, and groups are logical frameworks for managing a set of users. Users can be categorized into various groups, while groups are a set of multiple users. It isn’t easy to manage the…

The “dd” command in Linux is used to convert and copy files from one place to another. However, by default, this command is not programmed to show the progress of the ongoing operation. If you are copying large files from one place to…

Keeping accurate date and time on a Linux system is essential because many services such as cron jobs and scripts rely on accurate time to function as expected. The Network Time Protocol, abbreviated as NTP, is a protocol that maintains…

One of the most reliable ways to protect your documents and their content from any alterations is using a digital signature. It is a mathematical technique used to validate the authenticity and integrity of a document. In other words, a…

The beauty of Linux-like systems is that it provides multiple command-line tools for a single operation. Whether you want to download software/packages or fetch any information from hardware/disk drives of the system, you will get several…