Bash Ripple Practice: Incident Combo

This capstone practice combines filtering, redirection, and counting under light pressure. You isolate warning lines first, then verify incident volume in a second command.

grep 'WARN' incidents.log > warn.txt
cat warn.txt | wc -l

After extraction, warn.txt should contain only warning lines. Counting the file should return:

2

Incident triage often needs a fast answer to two questions: "which lines matter?" and "how many are there?" This pattern answers both with minimal command overhead.

• Filtering without saving output, forcing rework.
• Counting the wrong file after extraction.
• Ignoring case/keyword conventions in the source log.

Add a second filtered report:

grep 'ERROR' incidents.log > error.txt
cat error.txt | wc -l

By repeating the same pattern with different severities, you build a reusable triage toolkit.