What is scripting?

Scripting is the creation and execution of a sequence of commands intended to automate one-time or repetitive tasks. In the context of DevOps, scripts are often used for:

• Automating the setup and deployment of infrastructure.
• Performing system administration tasks (managing files, processes, users).
• Organizing CI/CD workflows.
• Collecting metrics and monitoring.
• Testing and verifying system functionality.

The most popular scripting languages in DevOps include Bash, Python, Ruby, PowerShell, and Groovy.

Example of a simple Bash script to create a directory and a file:

#!/bin/bash
# Create a directory named 'my_directory'
mkdir my_directory
# Change into the created directory
cd my_directory
# Create an empty file named 'my_file.txt'
touch my_file.txt
# Output a success message
echo "Directory 'my_directory' and file 'my_file.txt' created successfully."

Example of a Python script to display the current date and time:

#!/usr/bin/env python
import datetime

# Get the current date and time
now = datetime.datetime.now()
# Format and print the output
print(f"Current date and time: {now.strftime('%Y-%m-%d %H:%M:%S')}")