Holhol24 - Linux Howtos, Tutorials & Guides

SORT command in Linux is used to arrange the record in a specific order according to the option used. It helps in sorting the data in the file line by line. SORT command has different features that it follows in the resultant of commands.…

As the name implies, the tail command is used to display the last values of the content of the file. By default, the last 10 lines are selected. Whereas, we can customize the number of lines by providing the number in the command. Syntax:…

As the name shows, the head command displays the first N lines of data. By default, it is a 10 number but can be customized. It is opposite to the tail command because the tail command helps in displaying the last N lines from the file.…

The export command is a built-in command of the shell. Environmental variables are exported in it as child processes. The existing environment variables are not affected. It is also known as the bash bullets command. The export command…

The source seems to be an integrated shell instruction that reads and executes the contents of a document (commonly a bundle of instructions) that is provided as a parameter within the present shell script. Upon obtaining the contents of…

The ‘pipe’ command is used in both UNIX and Linux operating systems. Pipes help combine two or more commands and are used as input/output concepts in a command. In the Linux operating system, we use more than one pipe in command so that the…

In Linux, there are multiple system configuration files that regulate system behavior. The fstab file is such a configuration file that stores all the information about various partitions and storage devices on the computer. At the time of…

This tutorial explains how to see dpkg and apt history in Debian-based Linux distributions. After reading this tutorial, you will know how to find information about installed, removed, and upgraded packages using commands apt, dpkg-query,…

This article will cover a guide on installing and using Ksnip image and screenshot annotation utility available for Linux. Developed in C++ and Qt, this application can be used as a replacement for another similar Linux app called…

Sometimes we need to remove the content of a file without deleting the file; for that Linux operating system offers a command called “truncate”. It is used to extend or reduce the file size. Truncating a file is much quicker and simpler…