In this article, you will learn what the difference is between variables and parameters, what special parameters are, and a list of predefined special parameters in Bash. What are “Special Parameters” in Bash? Before you can understand what special parameters are, you must first understand
When you interactively login to your system, you usually interact with your main shell from the terminal to execute commands; however, from your main shell (or parent shell), you can spawn a subshell (or child shell). Confused? I knew this would be more difficult, especially
The UNIX/Linux shell is a command-line program that creates a bridge between the terminal emulator and kernel to allow users to enter commands, execute programs, and perform various other tasks by typing commands at the command prompt. Once the shell has finished executing the user
The “login shell” is a term used to define which shell (like Sh, Bash, or Zsh) will be used to load the environment variables and shell configuration files when you log into an interactive session. 💡 Once you log into your system using a pre-defined
Renaming files and directories is one of the most basic tasks that every Linux user performs regularly using the GUI or command line tools. In both of these tools, renaming a single file is pretty easy, but renaming multiple files can be trickier, especially for
In Linux, the rename command is an amazing utility that allows you to rename single or multiple files at once, based on a set of rules or regular expressions you specify. Most of the time, the mv command is used to rename files or folders.
As a Linux administrator or a normal user, you often have to execute multiple commands in your terminal emulator like Gnome Terminal or Konsole for different purposes. But have you ever wondered which command you are executing repeatedly without being aware of it? So, don’t
In UNIX/Linux, “watch” is a resourceful utility for monitoring updates in the specified command output (including errors) by refreshing the results every 2 seconds until it is interrupted using the “Ctrl+c” shortcut key. It makes it easier for you to monitor the updates in background
Linux users often use “more” and “less” commands interchangeably to read large files without understanding their differences, as their definitions are also identical in the manual. So, what’s their difference, and when should you use them? All of this doubt will be cleared in this
The Linux user often uses the touch command as a way to create a text file in the current working directory, but this tool is not limited to that; it’s way bigger than creating a text file. The official description for touch command is “a
Bash is the most popular shell implementation program that most modern Linux systems like Debian and Ubuntu ship out of the box, unlike ZSH and Fish. However, operating systems like Kali Linux and macOS took a step forward by providing ZSH as the default login
Linux (or its shells) is a powerful tool that can handle all the tasks on a workstation or server without a hitch, giving you full control over your system. Like managing the background process, setting up a web server, monitoring the network devices, handling a
