khalid32

### extract videos as mp3 files
youtube-dl -x --audio-format mp3 <video link>

### get highest resolution audio & video
To download a video, you type the URL after the command like so:

youtube-dl <video link>

To select the video quality, first use the -F option to list the available formats, here’s an example,

JoeyBurzynski

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

tst2005

#!/bin/sh

deadlink() {
        local NO_ABS=false
        local NO_REL=false
        while [ $# -gt 0 ]; do
                case "$1" in
                ('-h'|'--help')
                        echo "Usage: $0 [--na|--no-absolute]|[--nr|--no-relative] [--] <directory>";
                        exit 0;

meskarune

#!/usr/bin/lua
-- load the http socket module
http = require("socket.http")
-- load the json module
json = require("json")

api_url = "http://api.openweathermap.org/data/2.5/weather?"

-- http://openweathermap.org/help/city_list.txt , http://openweathermap.org/find
cityid = "5128581"

sergeyklay

Sed Cheat Sheet

Sed command line options

sed [options] sed-command [input-file]

Option	Description	Example

afresh1

#!/bin/sh

# "include: /var/unbound/etc/ad-blacklist.conf" in /var/unbound/etc/unbound.conf
# run script as daily cron

TMPFILE=$( mktemp get_dns_blacklists-XXXXXXXXX )
trap 'rm -f $TMPFILE; exit 1' EXIT KILL INT QUIT TERM

(
 ftp -VM -o- https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts | grep ^0.0.0.0 | awk '{ print $2 }'

pieplu

/*
 * An URI datatype.  Based upon examples in RFC3986.
 *
 * TODO %-escaping
 * TODO split apart authority
 * TODO split apart query_string (on demand, anyway)
 *
 * @(#) $Id$
 */

Eloi

#!/bin/sh

if [ -n "$1" ]; then

    if [ "$1" = "grab_id" ]; then

		xdotool selectwindow >/tmp/autoreload_window_id

    elif [ "$1" = "reload" ]; then
		    WINDOWID=`cat /tmp/autoreload_window_id`

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

wilfm

#!/bin/bash
#get hex codes in form #fff and #ffffff

#checks to see if not - especially needed on #fff matches
#FIXME: - currently prints trailing character
if [[ ! -a $1 ]]; then
	echo File not found
	exit 1
fi
sed ':a;N;$!ba;s/\n/ /g' "$1" | grep -o '\#[0-9a-fA-F]\{3\}[^0-9a-fA-F]' | sed 's/[^0-9a-fA-F#]//g' | sort -u