In this tutorial we will see how to use bash arrays and perform fundamental operations on them. Bash, the Bourne Again Shell, it’s the default shell on practically all major linux distributions: it is really powerful and can be also considered as a programming language, although not as sophisticated or feature-reach as python or other “proper” languages. Furthermore, the Bash scripting is a must skill for any Linux system administration job.
The purpose of this tutorial is to show how to get yesterday’s date via the Bash command line on a Linux system. The date command gives us a few ways to accomplish this. Check out the examples below to see how to retrieve yesterday’s date in Bash.
Is it best practice to include usage in every Bash script that you create. This gives the user an idea of what options the script is expecting, so they can use it as intended. It also gives the script some error checking ability to make sure that the user has supplied arguments in the expected way.
The while loop in a Linux Bash script is a type of loop that continues to execute as long as the programmed condition remains true.
Using operators in a Bash script is how you determine whether a condition is true or not. And testing for conditions is how we program a Bash script to be dynamic by giving it the ability to respond differently depending on a scenario.
In some Bash scripts, there is an option to pass arguments to the script when you are executing it. This allows the user to specify more information in the same command used to run the script.
The ability to automate tasks with Bash scripts in Linux is one of the operating system’s most powerful components.
Bash scripting and Python are two different ways to program and automate tasks on a Linux system. Many Linux users choose to learn one or the other, and some even learn both.
In this article we will talk about differences between Bash scripting vs PowerShell. Bash is the command interpreter for Linux systems and is well known as a tool that can be used for automation and repetitive tasks via Bash scripts. PowerShell serves the same purpose, but for Windows systems.
The objective of this article is to describe how to parse JSON data in Python.
A Unary operator expected error in a Bash script usually occurs in artihmetic operations where the script does not find the amount of numbers (or “unary operators”) it expected to.
Quotation on a Linux system can be a source of confusion at first. Single quotes ' and double quotes " are treated differently in Bash, and you will need to know the difference if you are writing a Bash script.