Command Line Log Analysis

Summary

Using grep, awk, and similar tools to search and parse log files quickly from the command line — often faster than a full SIEM for a quick, targeted investigation.

• 1Practice grep to search for a specific pattern (e.g. a failed login) across log files.
• 2Combine grep with awk to extract and count specific fields from structured log output.
• 3Learn to build a personal toolkit of common one-liners for recurring investigation tasks.