Red Hat · hands-on lab
RHCSA Lab 25: Improve Command-Line Productivity with Regular Expressions
Match text with basic and extended regular expressions, filter config files and write a reusable one-liner script.
- 40 minutesTime in the lab
- IntermediateLevel
- 5 tasksChecked automatically
- CertificateVerifiable link when you finish
The situation
Security wants quick answers from an access log and a clean copy of a configuration file.
What you will do
- Guided exercise: Anchors and classes
- Guided exercise: Extended regex
- Guided exercise: Clean config
- Lab: A report script
- Dotquestion
How it works
The lab opens in your browser: a real terminal or desktop, nothing to install. Work through the tasks, press Check after each one and the portal verifies your work. Stuck? Ask for a hint. Finish every task and you get a certificate page with its own verification link for LinkedIn or your CV.