2.md

Chapter 1: Introduction to shell scripting 🚀

2 - Creating your first script

Writing and Executing Your First Shell Script in Linux

Shell scripting is a powerful tool for automating tasks and executing commands in Linux. Here's a beginner-friendly guide to writing and executing your first shell script.

Writing Your Script

1. Choose a Text Editor: Open your preferred text editor. Common choices include nano, vim, or gedit.

2. Create a New File: Start a new file by typing:

   nano my_script.sh

   Replace my_script.sh with your desired file name.

3. Add SheBang: Begin your script with a SheBang line to specify the shell interpreter. For bash, use:

   #!/bin/bash

4. Write Your Commands: Add the commands you want your script to execute. For example:

   #!/bin/bash
   
   echo "Hello, world!"

5. Save and Exit: Press Ctrl + X to exit nano. Confirm to save changes by typing Y, then press Enter.

Making Your Script Executable

1. Set Permissions: Make your script executable using the chmod command:

   chmod +x my_script.sh

Executing Your Script

1. Run Your Script: Execute your script using the ./ notation followed by the script name:

   ./my_script.sh

2. View Output: Your script's output will be displayed in the terminal.

Example

Here's an example of a simple shell script:

#!/bin/bash

echo "Hello, world!"

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