Jayant Verma

In this article, we’ll be talking about the pstree command in Linux. When it comes to finding running processes on your Linux system, there are multiple options available. The ps command is the more popular option among these options. The top command is another popular choice for viewing the currently running processes. Both of these

The expr command in Linux evaluates a given expression for you and displays the output. It also lets you perform certain string operations such as finding length, substring and more. In this tutorial, we will learn how to perform these operations. First, we will look at the arithmetic operations and then move on to the

The split command in Linux lets you split large files into smaller files. The smaller files by default contain 1000 lines each. However, the split command also gives you the option to customize the number of lines and bytes in each of the smaller files. In this tutorial, we will learn how to use the

The bc command, short for basic calculator, is a language that supports arbitrary precision numbers with interactive execution of statements. Its syntax is similar to that of C programming language. It has two major applications. One as a mathematical scripting language and the second as an interactive mathematical shell. In this tutorial, we will learn how to

The iostat command in Linux lets you monitor CPU utilization and I/O (input /output) statistics of all the disks and file systems. Iostat reports are useful for changing system configuration to better balance the input/output load between physical disks. This command is a must-know for Linux system administrators. In this tutorial, we will be learning

Wall command in Linux lets you broadcast messages across the terminals of currently logged-in users. You can send messages by typing out the message on the terminal or send a text from a file as the broadcast message. In this tutorial, we will learn how to use the wall command for broadcasting messages in Linux.

You can have more than one user on the same Linux system. The finger command in Linux displays information about the users on the system. It is also referred to as the user information lookup program. It is not present on most distributions by default. In this tutorial, we will learn how to install and

Banner command in Linux displays ASCII character strings in large size on the standard output. This is useful when you want to display a string to be seen when someone logs in using the terminal. The strings are created using the character ‘#’. This will become clear as we demonstrate the command here. This will

The Whatis command returns a small one-line description for Linux commands. It gets this description from the command’s man-page. “whatis” searches for the argument that you pass along with it and returns the one-line description from the man-page wherever there is a match. In this tutorial we will learn how to use the whatis command

The type command in Linux displays information regarding Linux commands. It tells you the type of a Linux command. Type of command is indicative of how the system interprets the command. Different types of command are : alias shell built-in file function keyword   We can also use type command to get the location and executable