rch850

Degrade HD movie

$ ffmpeg -i source.mp4 -vf fps=fps=15,scale=480:-1 -b:v 450k -b:a 50k out.mp4

Convert mp4 into gif and scale it with maintaining aspect ratio.

• -vf scale: https://ffmpeg.org/ffmpeg-filters.html#scale

rch850

偶数行だけ1列目に「ふる」をつける

cat file.txt | awk 'BEGIN {OFS="\t"} NR%2==0 {print $1"ふる",$2,$3} NR%2==1 {print $0}'

• https://stackoverflow.com/questions/7841607/how-can-i-combine-odd-and-even-numbered-lines

3列目が true で7列目が false の行だけ出力する

rch850

tig -S'hoge'

git log -p -S hoge 相当。捗る。

tig --first-parent

現在いるブランチへのマージコミットだけを列挙する。

# 指定したファイルに関するマージコミットだけを列挙する。

rch850

Password Reset

Facebook

• To Send Email: https://www.facebook.com/recover/initiate
• URL in Email: https://www.facebook.com/recover/password?u=[User ID]&n=[6 digit code]

Twitter

rch850

// 参考:
// * https://blog1.mammb.com/entry/2020/12/08/224315

@file:DependsOn("io.ktor:ktor-server-netty:1.4.3")
@file:DependsOn("ch.qos.logback:logback-classic:1.2.3")

import io.ktor.application.*
import io.ktor.http.*
import io.ktor.response.*
import io.ktor.routing.*

rch850

Export environment variable

# bash
export AWS_PROFILE=myproj

# fish
set -x AWS_PROFILE myproj

rch850

log_format postdata '$time_local $request $request_body';

location = /path {
  access_log /var/log/nginx/postdata.log postdata;
  proxy_pass http://localhost:8080; # <= set your port
}

rch850

# Simulate Monty Hall Problem
# https://analytics-notty.tech/very-good-explain-montyhall-problem/

import random

def game(change):
    doors = [1, 2, 3]
    bingo = random.choice(doors)
    hand = random.choice(doors)

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// Compiled using ts2gas 1.6.2 (TypeScript 3.4.4)
var exports = exports || {};
var module = module || { exports: exports };
//import { ConnpassEventsResponse } from "./connpass";
// Connpass API: https://connpass.com/about/api/
//
// 2400 is a series id of ふくもく会.
// Your series id can be revrieved by calling
// https://connpass.com/api/v1/event/?event_id=YOUR_EVENT_ID
var CONNPASS_SERIES_ID = 2400;

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const process = require('process')
const https = require('https')

const slackToken = process.env.SLACK_TOKEN
if (!process.env.SLACK_TOKEN) {
  console.error('Environment variable SLACK_TOKEN is empty!')
  process.exit(1)
}
if (!process.argv[2]) {
  console.error('usage: node slack-reactions.js MESSAGE_URL')