back to labs
Regex: Negated Character Classes
MediumRegular Expressions5-10 minThe brief
Extract config lines that do NOT start with a digit from /root/work/conf.txt into /root/work/out.txt.
Judge each line by its first character only.
What you'll do
- out.txt holds exactly the lines whose first character is not a digit
Hands-on lab: you work on a real Linux box in your browser, graded on the machine's actual state.