Overview

A shell script is a file containing a series of commands that the shell can execute. It is a powerful tool for automating repetitive tasks, managing systems, and performing complex operations efficiently.

Basics of Shell Scripting

1. Creating a Shell Script:

   • Use a text editor to create a script file.

   • Example: nano script.sh

2. Adding a Shebang Line:

   • The first line in a shell script specifies the interpreter.

   • Example: #!/bin/bash

3. Making the Script Executable:

   • Command: chmod +x script.sh

4. Running the Script:

   • Command: ./script.sh

Writing a Simple Script

#!/bin/bash
# This is a comment

# Print a message
echo "Hello, World!"

# List files in the current directory
ls -l