Jayant Verma

Emacs editor is one of the oldest and most versatile text editors available for Linux UNIX-based systems. It has been around for over 20 years. It is known for its powerful and rich editing features. Emacs offers amazing editing features like that of Vim editor and is as user-friendly as the nano editor. You won’t have to enter insertion mode to

Peek is an animated GIF recorder that makes it easy to create short screencasts of a screen area. In this article, let’s learn how to install peek on Linux and record your first gif. GIF is short for Graphics Interchange Format. It is a lossless format for image files that supports both animated and static

In this article, we’ll learn to set the JAVA_HOME variable in Linux. JAVA_HOME should be correctly set on your system in order for you to be able to run Java programs successfully. In case there is an error, you will get the following error : To avoid getting this error you will have to set

The help command is the simplest way to get information regarding a built-in shell command. It helps you fetch information from the shell’s internal documentation. It takes a text string as the command line argument and looks for the provided string in the shell’s documents. This saves you the time spent in going through the

The tree command recursively lists directories and files in Linux. Files are listed in an indented manner under their directories. Tree command is similar to ls command which is famously known for listing files and directories. The only difference is that tree command outputs the files and directories in a tree-like manner. This command is

In this tutorial, we will learn how we can run C programs in Linux. C language was developed at Bell Laboratories in 1972 by Dennis Ritchie. It is still very popular for system-level programming. C language is the mother language of many other languages. In fact, Unix is one of the first operating system kernels that

The vmstat command is short for ‘Virtual Memory Statistics’. It is a tool that reports on Virtual memory statistics. To be specific, it reports data about your system’s memory, swaps, and processor resource utilization, kernel threads, and disks in real-time. Linux developers often use this tool to solve issues related to memory. Running the vmstat

In this article, we’ll cover the basic commands for memory management in Linux. Memory management is a vast topic and covering it in one blog post will not do it justice. In this tutorial, we will mainly go over the commands that you can use to observe your memory statistics. Physical vs Virtual Memory in

In this article, we’re talking about the tty command in Linux. The Linux operating system uses file system to represent everything. Not just the text files and images but even the hardware and the terminal. Yes, even the terminal you use to interact with Linux is actually a file. tty is the command that displays