back to labs
Regex: Quantifier + (One or More)
MediumRegular Expressions5-10 minThe brief
Extract every whole number from /root/work/log.txt into /root/work/out.txt, one per line.
Each number must come out whole: a port like 8080 is one line of output, not four separate digits. Output the numbers alone, not the lines they came from.
What you'll do
- out.txt holds each whole number, one per line
Hands-on lab: you work on a real Linux box in your browser, graded on the machine's actual state.