How to write a bash script
Classic SysAdmin: Writing a Simple Bash Script - Linux How to Create and Run Bash Shell Scripts on Windows 10 How to Create and Run Bash Shell Scripts on Windows 10 How to Write a Simple Bash Script - Linux Hint Writing a Bash Script. To start with Bash scripting, create a new file using a text editor. If you're using Vim, run the following command: vim script.sh. The extension for Bash scripts is .sh. However, the extension is not necessary. Adding the .sh makes the file easy to identify and maintain. Adding the "shebang" Let's create a simple script in bash that outputs Hello World. Create a file named hello_world.sh touch hello_world.sh Find the path to your bash shell. which bash In my case, the path is /usr/bin/bash and I will include this in the shebang.
Write the command. We will echo "hello world" to the console. Our script will look something like this: By successfully performing the following steps, you can write a simple bash script in Linux Mint 20: First, create an empty document in the home directory of Linux Mint 20 and give it any name you prefer, followed by the .sh extension. For our scenario, we have named the document ‘Bash.sh,’ as shown in the image below: One thing you can do is take an argument from the command line. So, for instance, when you run “script foo” the script will take the name of the first argument (foo): #!/bin/bash echo $1. Here bash will read the command line and echo (print) the first argument — that is, the first string after the command itself. Create and run your first shell script Convert your shell script into bash script The SheBang line at the beginning of shell script Adding your shell script to the PATH (so that it can be run from any directory) If you have to do it more than once, automate it! You will often find yourself repeating a single task on Linux over and over again. First you need to find out where is your Bash interpreter located. Enter the following into your command line: $ which bash /bin/bash This command reveals that the Bash shell is stored in /bin/bash. This will come into play momentarily. The next thing you need to do is open our favorite text editor and create a file called hello_world.sh. To do so, run the following command in the terminal, pointing it at your script: chmod +x ~/myscript.sh Advertisement To run the script, you can now just run it in the terminal by typing its path. Whenever you want to launch the script in the future, just open the Bash shell and type the path to the script. ~/myscript.sh Bash Bash is a Unix shell and command language written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell. First released in 1989, it has been used as the default login sh