Whiptail is tool which lets you display dialog boxes from shell scripts. This makes your shell scripts look look cooler and more professional while still providing extensive functionality. In this module, we are going to learn how to use Whiptail in your shell scripts to make them better ! Installing Whiptail Installing whiptail is as …
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Coding a reverse shell in Python in just 10 lines? Let’s get right to it. Reverse shells are an integral part of any Hacking/Pentesting operation. It helps in firewall evasion and enables us to execute commands on the remote target system. In this module, we are going to learn how to create a reverse shell …
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The sprintf() function belongs to the printf() family of functions. In this module, we are going to discover more about this function and how we can use it in our programs. Defining the sprintf() function The Linux Man Pages for sprintf() defines it as : Basically sprintf() stands for “String Print”. Unlike standard printf() which …
In this tutorial, we’ll learn about the sleep command in Linux. While working with bash scripts on your Linux system, some situations may require you to delay the execution of a script. In this case, you need to use the sleep command. This tutorial will help you understand and learn to use the sleep command …
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When using Linux, you are going to almost always be hooked to the terminal. And one of the common commands that you’ll have at the back of your hand will be the “ls” command. What is the ls command in Linux? The “ls” command is short for “List” and is used to list directories and …
Moving ahead with our tutorials now, let’s introduce the for loop in shell scripts in our today’s topic. We’ve already covered the while loop in our previous tutorial and used the break and continue statements to quit the while loop based on certain conditions. Let’s get right into the topic then! What’s The Difference Between …
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When you use the sudo command for the first time, you see the message “With great power, comes great responsibility.” And rightly so. “Sudo” is short for Superuser Do. With this command, any user who has been granted permissions has access to root-like privileges without having to actually be a superuser. Working with sudo Command …
Switch case in shell scripts is an efficient alternative to the if-elif-else statement that we learned previously. The concept of the switch case statements is that we provide different cases (conditions) to the statement that, when fulfilled, will execute specific blocks of commands. Let’s learn how to create a switch case block and how it …
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When you buy a new home appliance, it is accompanied by a user manual that explains the functions of the appliance. Similarly, when you download and install a new package for Linux, the user manual for the program is automatically installed in your system. The man command is what you can use to read through …
After learning the basics in our previous tutorials about if-else statements, switch-case statements, etc, it’s time to create functions in shell scripts. Functions help us divide scripts into different sections and make the code more portable as well as reusable. Defining Functions in Shell Scripts The basic syntax for defining a function is just the …