ruanbekker

$ curl http://localhost:5000/metrics
# HELP python_gc_objects_collected_total Objects collected during gc
# TYPE python_gc_objects_collected_total counter
python_gc_objects_collected_total{generation="0"} 317.0
python_gc_objects_collected_total{generation="1"} 71.0
python_gc_objects_collected_total{generation="2"} 0.0
# HELP python_gc_objects_uncollectable_total Uncollectable object found during GC
# TYPE python_gc_objects_uncollectable_total counter
python_gc_objects_uncollectable_total{generation="0"} 0.0

justinschuldt

hardware/software

Webcam parts:

• Raspberry Pi Zero W Rev 1.1
• Raspberry Pi Camera v2 (8-megapixel)
• Raspberry Pi High Quality Camera (12.3-megapixel)
• Raspbian Buster Lite 2020-02-13

Webcam works with:

• Windows 10
• Windows 10 "Camera" app

pjobson

OpenWRT on x86_64

This is a very brief tutorial on getting OpenWRT installed on a regular computer, it assumes you know your way around Linux. If you find this and need additional details, please like, subscribe, and comm... oh wait this isn't youtube, just comment.

This is how I got OpenWRT going on a Mini ITX Intel DH67CF with an Intel G870 CPU with 4GB of RAM.

What You'll Need

• 2 USB Sticks
• Linux Live ISO

khazeamo

Content

• Basics
  • File Hierarchy Standard (FHS)
  • Commands
  • Globs (Wildcards)
  • Regex
  • Stream redirection
• Disk and File System Management
  • General Disk Manipulation (non-LVM)
• LVM

luk3thomas

source "https://rubygems.org"

gem "rack"
gem "rack-proxy"

steven2358

FFmpeg cheat sheet

A list of useful commands for the ffmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

jon-a-nygaard

A Highcharts example in use with Webpack and Babel.

Install

1. Download source files
2. Run npm install to install all dependencies.
3. Run npm run build to bundle app.js into bundle.js

Open application

1. Open index.html in a browser.

DominicBreuker

iptables cheat sheet

Concepts

iptables defines tables, which group features:

• filter: use it to filter traffic
• nat: use it to implement NAT
• raw: use it to define which connections iptables should track (stateful firewall)
• mangle: use it to change some fields in packets (e.g., TTL)
• security: use it to define access control

galexrt

#!/bin/bash

version="${VERSION:-1.0.1}"
arch="${ARCH:-linux-amd64}"
bin_dir="${BIN_DIR:-/usr/local/bin}"

wget "https://github.com/prometheus/node_exporter/releases/download/v$version/node_exporter-$version.$arch.tar.gz" \
    -O /tmp/node_exporter.tar.gz

mkdir -p /tmp/node_exporter

trastle

global:
  scrape_interval: 60s

  external_labels:
    monitor: 'example'

rule_files:
  - /etc/prometheus/config/*.rules

scrape_configs: