Log Analysis Cheat Sheet (Printable PDF)

For the hour between "something broke" and "here's the line that says so".

Use it when: you have a 200 MB log file and a rough timestamp. When you need to count how often something happened, not just see that it happened. When the useful field is the fourth one and it's separated by something inconvenient.

On the sheet: grep with the flags that matter, sed for reshaping lines, awk for fields and counting, sorting and deduplicating, following live logs, and the pipelines that turn a wall of text into a number.

Not on it: log aggregation platforms. This is what you do on the machine, with what's already installed.

Format: 3-page US Letter PDF, dark terminal theme, print-ready. Instant download, no account needed.

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