Log Analyzer

Read a log file, extract ERROR/WARN/CRITICAL lines, group similar messages, and produce a concise summary report. Use when analyzing application logs, agent logs, service logs, or audit outputs for repeated failures, warning clusters, or critical events.

Read a target log file, isolate important severity lines, group similar messages, and emit a Markdown summary.

Workflow

1. Confirm the input log path.
2. Run index.js with --input <logfile> and optional --out <report.md>.
3. Review the grouped output for dominant error families.
4. Use the report as a triage artifact, not as the only source of truth.

Output

Always include:

• total scanned lines
• WARN / ERROR / CRITICAL counts
• grouped issue buckets
• sample lines
• suggested first checks