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🎥 How to Filter Logs by Log Level Using Shell Script | Bash Scripting for DevOps
In this video, you’ll learn how to write a simple but powerful shell script to extract logs from a file based on a specific log level (e.g., ERROR, INFO, WARN). This is a must-know scripting skill for DevOps engineers, sysadmins, and developers working with log-heavy systems.

🔧 What You'll Learn:

How to take log level and file as script inputs

How to validate input and check file existence

How to use grep to filter logs efficiently

Real-world use case with sample log files

📂 Example Use Case:
Get all ERROR level logs from a log file in seconds using a one-liner script!

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