urish

// Copyright (C) 2017, Uri Shaked
// Loosely based on code samples provided by waveshare
// License: MIT

const DIN_PIN = 11;
const CLK_PIN = 12;
const CS_PIN = 13;
const DC_PIN = 14;
const RST_PIN = 15;
const BUSY_PIN = 16;

quephird

Finding long running queries in Postgres

There have been a few times in the last several months at $DAY_JOB during which the following query, or some slight variation of it, has been used to identify long-running and potentially problematic queries:

select  pid,
        now() - query_start as duration,
        query,

nickkraakman

FFmpeg Cheat Sheet for 360º video

Brought to you by Headjack

 
FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.

 
Let's start with some basics:

• ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file

marcotc

nobodypb

#!/bin/bash
SOURCE=/volume1
DEST=/volume2

APPDIR=\@appstore

ASK=true

while getopts ":y" opt; do
  case $opt in

corbanb

function base64url(source) {
	// Encode in classical base64
	encodedSource = CryptoJS.enc.Base64.stringify(source);

	// Remove padding equal characters
	encodedSource = encodedSource.replace(/=+$/, '');

	// Replace characters according to base64url specifications
	encodedSource = encodedSource.replace(/\+/g, '-');
	encodedSource = encodedSource.replace(/\//g, '_');

geekman

#!/bin/bash -e

modprobe libcomposite

cd /sys/kernel/config/usb_gadget/
mkdir g && cd g

echo 0x1d6b > idVendor  # Linux Foundation
echo 0x0104 > idProduct # Multifunction Composite Gadget
echo 0x0100 > bcdDevice # v1.0.0

keijiro

:: Trim from 2″ for 3 seconds, and encode into a "Twitter friendly" format.
ffmpeg -i source.mp4 -pix_fmt yuv420p -an -ss 2 -t 3 temp.mp4

:: Make a palette for GIF.
ffmpeg -i temp.mp4 -vf palettegen=max_colors=24 palette.png

:: Make a GIF with the palette.
ffmpeg -i temp.mp4 -i palette.png -filter_complex "scale=400:-1:flags=lanczos[x];[x][1:v]paletteuse" -r 30 out.gif

eguven

# this original one uses values returned from 'brew info'
brew list --formula | xargs -n1 -P8 -I {} \
    sh -c "brew info {} | egrep '[0-9]* files, ' | sed 's/^.*[0-9]* files, \(.*\)).*$/{} \1/'" | \
    sort -h -r -k2 - | column -t

# faster alternative using 'du'
du -sch $(brew --cellar)/*/* | sed "s|$(brew --cellar)/\([^/]*\)/.*|\1|" | sort -k1h

parzivail

TILCD::TILCD(uint8_t ce, uint8_t di, uint8_t wr, uint8_t rst, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
{
	_ce = ce;
	_di = di;
	_wr = wr;
	_rst = rst;

	_d0 = d0;
	_d1 = d1;
	_d2 = d2;