Tag: Tutorial

Bash Conditionals In the last section, we covered some of the most popular conditional expressions. We can now use them with standard conditional statements like if, if-else and switch case statements. If statement The format of an if statement in Bash is as follows: if [[ some_test ]] then <commands> fi Here is a quick…

Bash Variables As in any other programming language, you can use variables in Bash Scripting as well. However, there are no data types, and a variable in Bash can contain numbers as well as characters. To assign a value to a variable, all you need to do is use the = sign: name=”DevDojo” {notice} as…

Bash Hello World Once we have our devdojo.sh file created and we’ve specified the bash shebang on the very first line, we are ready to create our first Hello World bash script. To do that, open the devdojo.sh file again and add the following after the #!/bin/bash line: #!/bin/bash echo “Hello World!” Save the file…

Creating a Bash Script Let’s start by creating a new file with a .sh extension. As an example, we could create a file called devdojo.sh. To create that file, you can use the touch command: touch devdojo.sh Or you can use your text editor instead: nano devdojo.sh In order to execute/run a bash script file…

Introduction to Bash In this bash crash course, you will learn the Bash basics so you could start writing your own Bash scripts and automate your daily tasks. Bash is a Unix shell and command language. It is widely available on various operating systems, and it is also the default command interpreter on most Linux…