Build and manage an AWS EC2 server with Terraform resources. Learn resource blocks, variables, outputs, dependencies, planning, state, and cleanup.
Terraform Resources: Create and Manage an AWS EC2 Instance Read More »
Learn how Bash scripts read values from the command line, validate required arguments, and process multiple log files safely.
How to Use Command-Line Arguments in Bash Scripts Read More »
Learn to connect accounts and orders with SQL JOIN queries, use INNER and LEFT JOINs, filter joined data, and summarize orders for every customer.
SQL JOIN Queries: Combine Related Data from Multiple Tables Read More »
Learn the basics of SQL SELECT queries by reading customer data, choosing specific columns, and filtering records by city with WHERE.
SQL SELECT Queries: Read and Filter Customer Records Read More »
Learn the basics of PowerShell arrays by storing device and computer inventory values, accessing items, counting entries, and looping through collections.
PowerShell Arrays: Store and Work with Multiple Values Read More »
Learn the basics of Python list comprehensions by filtering product prices and selecting items that meet budget and availability conditions.
Python List Comprehensions: Filter Values from a List Read More »
Learn how Terraform outputs expose useful EC2 instance details and how to read them from the command line.
Terraform Outputs: Display EC2 Instance Information Read More »
Use the AWS CLI describe-instances command to inspect EC2 instances, filter by state and tags, and display only the details you need.
How to Use AWS CLI Describe-Instances to Find EC2 Instances Read More »
Learn the basics of Python dictionaries by managing application settings with keys and values, including reading, updating, and adding dictionary entries.
Python Dictionaries: Store and Update Configuration Settings Read More »
Learn the basics of SQL WHERE clauses by filtering orders by status and amount, using comparison operators, and combining conditions with AND.
How to Use the SQL WHERE Clause to Filter Rows Read More »
