gunjanpatel

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

r15ch13

@echo off
setlocal enableextensions
chcp 65001
set input=%1
set device=%2
set loglevel=quiet
for %%i in ("%~f1") do set dirname=%%~dpi
for %%i in ("%~f1") do set extension=%%~xi

set tempfile=%dirname%%RANDOM%-temp.m4a

germanviscuso

#!/bin/bash
# Clone all org repos (via ssh)
curl -s https://api.github.com/orgs/<organization>/repos?per_page=200 | python -c $'import json, sys, os\nfor repo in json.load(sys.stdin): os.system("git clone " + repo["ssh_url"])'

# Later pull from each repo
back=`pwd`; for d in `find . -type d -name .git` ; do cd "$d/.."; git pull origin; cd $back ; done

tayvano

Originall From: Posted 2015-05-29 http://ubwg.net/b/full-list-of-ffmpeg-flags-and-options

This is the complete list that’s outputted by ffmpeg when running ffmpeg -h full.

usage: ffmpeg [options] [[infile options] -i infile]… {[outfile options] outfile}…

Getting help:
    -h — print basic options
    -h long — print more options
    -h full — print all options (including all format and codec specific options, very long)

eyecatchup

Get/set ID3 meta tags using ffmpeg

A quick guide on how to read/write/modify ID3 metadata tags for audio / media files using ffmpeg.

FFmpeg has a free-form command line option that allows the user to specify key-value-pairs for encoding metadata. Let's take a look.

1. Read ID3 metadata

To list all global metadata tags for a media file, just set an input but no output file.

konfou

#!/usr/bin/env bash
#
# Extract all tracks/attachments/chapters from an mkv file.

# depends
type -p mkvmerge &>/dev/null || exit 3
type -p mkvextract &>/dev/null || exit 3

# trap SIGINT
trap 'trap - INT; kill -s INT "$$"' INT

djotto

#! /usr/bin/env bash

####################################################
# Required Libraries
#
# library name | commands used   | verified version
# ------------------------------------------------
# ffmpeg       | ffmpeg/ffprobe  | 3.1.4 3.2
# gpac         | mp4box          | 0.6.1
# mp4v2        | mp4chaps        | 2.0.0

tobyjsullivan

// Iterated from: https://stackoverflow.com/questions/10599933/convert-long-number-into-abbreviated-string-in-javascript-with-a-special-shortn
function abbreviateNumber(value) {
  let newValue = value;
  const suffixes = ["", "K", "M", "B","T"];
  let suffixNum = 0;
  while (newValue >= 1000) {
    newValue /= 1000;
    suffixNum++;
  }

msand

/*
  Open console.
  (Import https://raw.githubusercontent.com/MikeMcl/decimal.js/master/decimal.js first if you want/need number formatting)
  Then copy & paste this + enter, to run this.
  Copy console output to a NewFile.js or NewFile.jsx file.
  prettier --write NewFile.js
*/
/* eslint no-console: ["error", { allow: ["log"] }] */
/* global document, Decimal*/
(() => {

zfael

var fs = require('fs');
var crypto = require('crypto');

fs.readFile('file.pdf', function(err, data) {
  var checksum = generateChecksum(data);
  console.log(checksum);
});

function generateChecksum(str, algorithm, encoding) {
    return crypto