denji

#!/bin/bash
# =========================================================================
# Source: https://gist.github.com/lucaspar/27f5e108b80524b315be10b2a9049817
# =========================================================================
# This script will compile and install a static FFmpeg build with
#   support for NVENC in Ubuntu. Developed in Ubuntu 23.10,
#   with NVIDIA Drivers v535.129.03 and CUDA v12.2 with a GPU
#   with CUDA capability 8.6 (RTX 3080) (see ccap below).
# It assumes NVIDA drivers are installed and that you have a
#   CUDA-compatible GPU. You can check installed drivers with:

denji

#!/bin/bash

# Cores reserved for the host machine
# Must include QEMU IO/Emulation cores if configured
# Ex: 1st Core -> reserved=0
# Ex: 1st & 2nt Cores -> reserved=0,1
# Ex: 1st Physical Core (16 Virtual Cores) -> reserved=0,8
reserved=0,8

# Host core range numbered from 0 to core count - 1

denji

// gcc aml-upgrade-package-extract.c -o aml-upgrade-package-extract
// ./aml-upgrade-package-extract update-usb-burning-mode.img

// /dev/sdX - fat32 sdcard

// Make bootable Android update:

// dd if=aml_sdc_burn.UBOOT bs=1 count=442 of=/dev/sdX
// dd if=aml_sdc_burn.UBOOT seek=1 skip=1 bs=512 of=/dev/sdX
// sync

denji

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

• a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
• H: preserves hard-links
• A: preserves ACLs

denji

Git cheatsheet

Find all instances of text in all commits

git grep "text to look for" $(git rev-list --all)

List commit messages since given commit

denji

-- Query the database to calculate a recommended innodb_buffer_pool_size
-- and get the currently configured value
-- The rollup as the bottom row gives the total for all DBs on the server, where each other row is recommendations per DB.

SELECT 
    TABLE_SCHEMA,
	CONCAT(CEILING(RIBPS/POWER(1024,pw)),SUBSTR(' KMGT',pw+1,1))
	Recommended_InnoDB_Buffer_Pool_Size,
	(
	SELECT 	CONCAT(CEILING(variable_value/POWER(1024,FLOOR(LOG(variable_value)/LOG(1024)))),SUBSTR(' KMGT',FLOOR(LOG(variable_value)/LOG(1024))+1,1))

denji

                _   _            _      ____             _    _ 
               | | | | __ _  ___| | __ | __ )  __ _  ___| | _| |
               | |_| |/ _` |/ __| |/ / |  _ \ / _` |/ __| |/ / |
               |  _  | (_| | (__|   <  | |_) | (_| | (__|   <|_|
               |_| |_|\__,_|\___|_|\_\ |____/ \__,_|\___|_|\_(_)
                                                 
     A DIY Guide for those without the patience to wait for whistleblowers


--[ 1 ]-- Introduction

denji

#!/usr/bin/env ruby
require 'resolv'
require 'set'
require 'thread'
require 'yaml'

KnownSelfDomains = [
  'groupon.com',
  'airbnb.com',
  'citi.com',

denji

HKEY_USERS\.DEFAULT\Control Panel\Keyboard and edit the string value InitialKeyboardIndicators to one of the following values:

InitialKeyboardIndicators bitmask list:

• 0 — turns off Scroll Lock, Num Lock, Caps Lock (default)
• 1 — turn on Caps Lock
• 2 — turn on Num Lock
• 3 — turn on both Num Lock and Caps Lock
• 4 — turn on Scroll Lock
• 5 — turn on both Scroll Lock and Caps Lock
• 6 — turn on both Scroll Lock and Num Lock

denji

What we do now:
We use a static record size of 4K. This gives a good balance of latency and
throughput.

Optimize latency:
By initialy sending small (1 TCP segment) sized records, we are able to avoid
HoL blocking of the first byte. This means TTFB is sometime lower by a whole
RTT.

Optimizing throughput: