Ultimate Command Cheat Sheets
Your comprehensive resource for command-line tools, cybersecurity utilities, and development frameworks.
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ebpf_exporter - Custom Kernel Metrics for Prometheus Cheatsheetebpf_exporter (by Cloudflare) exposes custom eBPF-derived kernel metrics to Prometheus — measure disk latency histograms, TCP retransmits, run-queue delay, and other deep system behavior that node_exporter cannot reach.irqbalance - Interrupt Distribution Tuning Cheatsheetirqbalance distributes hardware interrupts across CPU cores to prevent a single core from becoming a bottleneck — essential for network and storage throughput, and often deliberately disabled for latency-critical pinned workloads.bpftune - Automatic Kernel Tuning with eBPF Cheatsheetbpftune is Oracle's eBPF-based daemon that continuously and automatically tunes Linux kernel parameters — it observes system behavior, adjusts sysctls like TCP buffers and connection limits, and backs off when it detects manual settings.Perfetto - System-Wide Tracing & Analysis CheatsheetPerfetto is Google's production-grade tracing stack for Linux and Android — capture system-wide traces of scheduling, syscalls, and app events, then explore them in a powerful web UI or query them with SQL.Quickwit - Cloud-Native Search Engine for Logs CheatsheetQuickwit is a Rust search engine built for logs and traces on object storage — sub-second full-text search over petabytes in S3 with no local disk, decoupled compute and storage, and Elasticsearch-compatible and Jaeger-native APIs.Vector - High-Performance Observability Data Pipeline CheatsheetVector is a fast, vendor-agnostic pipeline for logs, metrics, and traces written in Rust — collect from any source, transform with VRL, and route to any sink, replacing Logstash and Fluentd with far lower resource usage.OpenObserve - Petabyte-Scale Observability Platform CheatsheetOpenObserve is a Rust-based observability platform for logs, metrics, and traces that stores data in object storage — claiming ~140x lower storage costs than Elasticsearch, with a built-in UI, SQL queries, and OpenTelemetry ingestion.ty - Fast Python Type Checker Cheatsheetty is an extremely fast Python type checker and language server written in Rust by Astral — the makers of Ruff and uv — offering near-instant feedback on large codebases as a modern alternative to mypy.
Latest Blog Posts
AI Security Tooling in 2026: Agentic Pentesting and the Exposed AI Attack SurfaceAI changed security tooling twice over — agents that hunt vulnerabilities and validate them with real exploits, and a whole new attack surface of exposed inference servers. A guide to Strix, AIMap, and what the shift means for defenders.Observability on Object Storage in 2026: Why Logging Got 100x CheaperLog storage costs used to force teams to throw data away. A new generation of tools built on S3 rather than local disk changed the economics. A guide to the object-storage observability stack — Quickwit, OpenObserve, and Vector — and how to adopt it.Reproducible Dev Environments in 2026: Devbox, devenv, DevPod, and Dev Containers"Works on my machine" is a solvable problem. This guide covers the 2026 landscape of reproducible development environments — Nix-based tools like Devbox and devenv, container-based Dev Containers and DevPod — and how to pick the right approach for your team.Reverse Engineering WebAssembly in 2026: Reading the Web's New BinaryWebAssembly now runs everywhere — browsers, edge, plugins, and malware — and analysts increasingly need to read it. This guide covers wasm reverse engineering in 2026: the format, the toolchain (WABT, diswasm, Binaryen, wasm-tools), and a practical analysis workflow.Code-First AI Agents in 2026: Why Agents Are Learning to Write CodeJSON tool calls are giving way to agents that act by writing Python. This guide explains the code-first agent paradigm — why it reduces LLM calls and improves performance — through smolagents and Pydantic AI, plus the sandboxing that makes it safe.Open-Source Web App Scanning in 2026: ZAP, Nuclei, Wapiti, and the DAST StackNo single scanner finds every web vulnerability. This guide explains dynamic application security testing in 2026 and how the open-source tools — ZAP, Nuclei, Wapiti, Nikto — fit together into a layered DAST pipeline that plugs into CI/CD.AI Agent Memory in 2026: Knowledge Graphs, Temporal Facts, and OS-Style PagingContext windows are not memory. This guide surveys the 2026 agent-memory landscape — Mem0, Cognee, Graphiti/Zep, and Letta/MemGPT — explaining vector, graph, and temporal approaches, and how to choose a memory layer that actually persists what matters.The State of LLM Inference Engines in 2026: vLLM, llama.cpp, Aphrodite, LMDeployThere is no single best way to run an LLM anymore — there is a small set of mature engines, each with a personality. A practical guide to the 2026 inference landscape: throughput serving, local/edge inference, quantization breadth, and how to choose.