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@epcim
epcim / update-ca-certificates.md
Last active March 14, 2025 17:32
trusted certificates system update-ca-certificates

Adding trusted root certificates to the server

Mac OS X

sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain ~/new-root-certificate.crt
sudo security delete-certificate -c "<name of existing certificate>"

Windows

certutil -addstore -f "ROOT" new-root-certificate.crt

@george-hawkins
george-hawkins / arm64.md
Last active May 27, 2025 15:47
Running virtualized x86_64 and emulated arm64 Ubuntu cloud images using QEMU

QEMU arm64 cloud server emulation

This is basically a rehash of an original post on CNXSoft - all credit (particularly for the Virtio device arguments used below) belongs to the author of that piece.

Download the latest uefi1.img image. E.g. ubuntu-16.04-server-cloudimg-arm64-uefi1.img from https://cloud-images.ubuntu.com/releases/16.04/release/

Download the UEFI firmware image QEMU_EFI.fd from https://releases.linaro.org/components/kernel/uefi-linaro/latest/release/qemu64/

Determine your current username and get your current ssh public key:

@AlwaysBCoding
AlwaysBCoding / notes.txt
Last active January 30, 2025 06:37
Ethereum Ðapp Development - Video 3 | The Halting Problem And Why We Need Gas
// To learn more about the halting problem check out Gary Bernhardt's series on computation
https://www.destroyallsoftware.com/screencasts
// Ethereum Yellow Paper
http://gavwood.com/paper.pdf
// Ethereum OpCodes List
http://ethereum.stackexchange.com/questions/119/what-opcodes-are-available-for-the-ethereum-evm
// Ethereum OpCodes Gas Costs
@kevin-smets
kevin-smets / 1_kubernetes_on_macOS.md
Last active June 23, 2025 01:06
Local Kubernetes setup on macOS with minikube on VirtualBox and local Docker registry

Requirements

Minikube requires that VT-x/AMD-v virtualization is enabled in BIOS. To check that this is enabled on OSX / macOS run:

sysctl -a | grep machdep.cpu.features | grep VMX

If there's output, you're good!

Prerequisites

@twiceyuan
twiceyuan / LC_CTYPE.md
Last active August 2, 2019 18:29 — forked from jampajeen/LC_CTYPE.txt
[Linux 编码配置] Centos warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory #Linux

file

vi /etc/environment

add these lines...

LANG=en_US.utf-8

LC_ALL=en_US.utf-8

@esrever10
esrever10 / gs.sh
Last active March 13, 2025 06:30
gstreamer send and receive h264 rtp stream
# linux send h264 rtp stream:
gst-launch-1.0 -v ximagesrc ! video/x-raw,framerate=20/1 ! videoscale ! videoconvert ! x264enc tune=zerolatency bitrate=500 speed-preset=superfast ! rtph264pay ! udpsink host=127.0.0.1 port=5000
# Macos send h264 rtp stream:
gst-launch-1.0 -v avfvideosrc capture-screen=true ! video/x-raw,framerate=20/1 ! videoscale ! videoconvert ! x264enc tune=zerolatency bitrate=500 speed-preset=superfast ! rtph264pay ! udpsink host=127.0.0.1 port=5000
# receive h264 rtp stream:
gst-launch-1.0 -v udpsrc port=5000 caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! rtph264depay ! decodebin ! videoconvert ! autovideosink
@btroncone
btroncone / rxjs_operators_by_example.md
Last active September 14, 2025 16:48
RxJS 5 Operators By Example
@rposbo
rposbo / vanilla-lazy-load.html
Last active January 3, 2023 09:01
<html>
<head>
<style>
.item {width:300px; display: inline-block; }
.item .itemtitle {font-weight:bold; font-size:2em;}
.hidden {display:none;}
</style>
</head>
<body>
<h1>Amalgam Comics Characters</h1>
@mondain
mondain / public-stun-list.txt
Last active December 25, 2025 13:46
Public STUN server list
23.21.150.121:3478
iphone-stun.strato-iphone.de:3478
numb.viagenie.ca:3478
s1.taraba.net:3478
s2.taraba.net:3478
stun.12connect.com:3478
stun.12voip.com:3478
stun.1und1.de:3478
stun.2talk.co.nz:3478
stun.2talk.com:3478
@johanndt
johanndt / upgrade-postgres-9.3-to-9.5.md
Last active July 27, 2024 16:49 — forked from dideler/upgrade-postgres-9.3-to-9.4.md
Upgrading PostgreSQL from 9.3 to 9.5 on Ubuntu

TL;DR

Install Postgres 9.5, and then:

sudo pg_dropcluster 9.5 main --stop
sudo pg_upgradecluster 9.3 main
sudo pg_dropcluster 9.3 main