rkd-me

1. Open Firefox and press Alt to show the top menu, then click on Help → Troubleshooting Information
2. Click the Open Folder button beside the Profile Folder entry
3. Create a folder named chrome in opened directory (must be lowercase)
4. In the chrome folder, create a CSS file with the name userContent.css
5. Copy the following code to userContent.csswith changes according to your needs

   @-moz-document domain(website.com) {
       div.premium-button { display: none !important; }
   }

sanjeevtripurari

#!/bin/bash

# Give numeric value, which is in bytes
# will show all possible conversions 

call_bc() {
 n1=$1
 n2=$2
 echo "scale=4; $n1/($n2)" |bc
}

jarun

#!/usr/bin/env python3

'''
Description: split a music track into specified sub-tracks using ffmpeg
             target files are saved as variable bit-rate mp3 (lossless)

Usage: split <original_track> <track_list>
'''

import shlex

abelcheung

Customizing Firefox view-source style

TL;DR

1. Open (or create) chrome/userContent.css under your Firefox profile folder
2. Append attached CSS content and save file
3. Toggle toolkit.legacyUserProfileCustomizations.stylesheets in Firefox about:config
4. Restart Firefox

koladilip

const phantom = require('phantom');

async function wait(timeInMills) {
    return new Promise((resolve) => {
        setTimeout(() => {
            resolve();
        }, timeInMills);
    });
}

artjomb

import selenium
import time
from selenium import webdriver

browser = webdriver.PhantomJS("phantomjs")
browser.get("https://twitter.com/StackStatus")
print browser.title

pause = 3

00001101-xt

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

Zren

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
@namespace html url("http://www.w3.org/1999/xhtml");

/*
** In order for userChrome.css to work, you need to open `about:config` and change
** `toolkit.legacyUserProfileCustomizations.stylesheets` to `true`.
*/

wkarney

from time import sleep
from selenium import webdriver
from bs4 import BeautifulSoup

# Headless/incognito Chrome driver  
chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument("--incognito")
chrome_options.add_argument('headless')
driver = webdriver.Chrome(executable_path='CHROMEDRIVER_PATH',chrome_options=chrome_options)

wookietreiber

Table of Contents

1. Table of Contents
2. General Usage
3. File Spacing
4. Numbering and Calculations
5. Conversion and Substitution
6. Selective Printing
7. Selective Deletion