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Ollama Cheatsheet (Advanced) - Ubuntu / Linux

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Installation & Service Management

# Install Ollama
curl -fsSL https://ollama.com/install.sh | sh

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Mechanistic Interpretability: Research Vault (Updated March 2026)

1. Core Frameworks & Theory (Surveys & Foundational Concepts)

• A Practical Review of Mechanistic Interpretability (2025)

  • ArXiv Abstract (2407.02646) — Comprehensive taxonomy and guide for the entire field.
  • Direct PDF
  • Full HTML Version

• Open Problems in Mechanistic Interpretability (2025)

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python -c "                                                                                                                                                                                           
  import asyncio                                                                                                                                                                                          from playwright.async_api import async_playwright                                                                                                                                                     
  async def test():                                                                                                                                                                                     
      pw = await async_playwright().start()
      browser = await pw.chromium.launch(headless=True)
      page = await browser.new_page()
      await page.goto('https://example.com')
      print('Title:', await page.title()

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Performance Co-Pilot (PCP) + pmlogger Cheatsheet

(Updated 2025–2026 – most frequently used commands, configs & patterns)

1. Service Management (systemd)

systemctl status pmcd pmlogger pmproxy # core trio systemctl restart pmcd pmlogger pmproxy systemctl enable --now pmcd pmlogger pmproxy

journalctl -u pmcd -u pmlogger -u pmproxy -xe # quick error check

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console.clear();

const t0 = performance.now();
for (let i = 0; i < 1e6; i++); // small workload
const t1 = performance.now();

console.log("Time:", (t1 - t0).toFixed(2), "ms");
console.log("Now:", new Date().toLocaleTimeString());
console.log("Memory:", performance.memory ? performance.memory.usedJSHeapSize : "N/A");
console.log("CPU cores:", navigator.hardwareConcurrency);

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// performance-test-snippets.js
// Paste these one by one (or selected groups) into your custom JS console/TUI to stress-test performance monitoring

// 1. Basic CPU burn (4 seconds of heavy math)
let start = performance.now();
while (performance.now() - start < 4000) {
  Math.sqrt(Math.random() * Math.random() * 999999);
}
console.log("4-second CPU burn finished");

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#!/bin/bash
# =============================================================
# sysprofile — Deep system profile dump
#
# Generates a comprehensive plain-text snapshot of a Linux box.
# Designed to be pasted into AI conversations for full context.
#
# Covers: hardware, kernel, storage, network, GPU, thermal,
# users, services, packages, dev tools, containers, firewalls,
# conda/python/node environments, cron, logs, and more.

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venv() {
  local d="${1:-.venv}"
  if [[ -d "$d" ]]; then
    source "$d/bin/activate"
    echo "activated $d ($(python --version), $(pip list 2>/dev/null | tail -n +3 | wc -l) packages)"
  else
    python3 -m venv "$d" && source "$d/bin/activate"
    echo "created & activated $d ($(python --version))"
  fi
}

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Building Busybox from Source

busybox.net has been unreliable. Source mirrors:

git clone https://git.busybox.net/busybox
# or
git clone https://github.com/mirror/busybox

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┌──(booger㉿killengn)-[~/bcc-bpf]
└─$ sudo python3 ~/bcc-bpf/examples/file_watcher.py python3
Watching file I/O for: python3  (excluding self pid=8531)
──────────────────────────────────────────────────────────────────────────────
  OP      PID          COMM                        BYTES  FILENAME
──────────────────────────────────────────────────────────────────────────────
  OPEN   pid=8534    comm=python3                        /etc/ld.so.cache
  OPEN   pid=8534    comm=python3                        /lib/aarch64-linux-gnu/libm.so.6
  READ   pid=8534    comm=python3             832 bytes
  OPEN   pid=8534    comm=python3                        /lib/aarch64-linux-gnu/libz.so.1