USPS Tracking Numbers are Recycled and Not Unique Values

Why treating USPS tracking numbers as unique values is dangerous — they get recycled after delivery.

Compared reset.css and normalize.css and Decided to Recommend normalize.css

Comparing reset.css and normalize.css and choosing normalize.css for its keep-what-works philosophy.

Q) 'If You Were to Introduce a CSS Preprocessor?' A) 'I'd Go with PostCSS' ~ Rough Comparison of PostCSS, Stylus, Sass, Less

Comparing PostCSS, Stylus, Sass, and Less to decide which CSS preprocessor fits your team.

WordPress 'Currently under maintenance, temporarily unavailable.' - How to fix

Recovering a WordPress site stuck on the maintenance message by deleting the .maintenance file.

git add -p is Short for git add --patch

git add -p is short for --patch, not --partial — a small discovery from the git add help output.

Using Regular Expressions to Append Specific Strings After Image URL Extensions .jpeg .jpg .png

A JavaScript regex snippet that appends .webp after .jpeg / .jpg / .png in image URLs, query parameters included.

[Bash] Shell Script to List URLs That Return HTTP Status Code 200

A Bash snippet using curl and a for loop to list only URLs that return HTTP 200.

[JavaScript] 46 Ways to Convert Strings to Boolean

Several approaches for turning strings into Booleans in JavaScript — the !! idiom, strict comparison, and a toBoolean helper.

[PayPal] TOKEN Valid Time is 3 Hours by Default, Maximum 72 Hours

The PayPal SetExpressCheckout TOKEN is valid for 3 hours by default and up to 72 hours on request.

[Mongoose] Saving Error Objects to Schema.Types.Mixed Fields

Convert Error objects with toString() or lodash.toPlainObject() before saving them to a Mongoose Schema.Types.Mixed field.

[atom-ternjs] Solution for 'Failed to find plugin node-express'

Fixing atom-ternjs's 'Failed to find plugin node-express' error by installing the tern-node-express plugin.

Steps to Install Latest Stable Nginx on Ubuntu LTS 16.04

Add the official Nginx apt repository to Ubuntu 16.04 and install the latest stable 1.12.0.

Collection of Japanese and English Articles to Understand the Difference Between git merge --ff and --no-ff

Reference articles on `git merge --ff` vs `--no-ff`, plus how I use `--no-ff` by default.

ConoHa VPS is Recommended for Server Cost Discounts Through Shareholder Benefits

How GMO Internet's shareholder benefit knocks 5,000 yen off ConoHa VPS server costs, plus pros and cons.

How to use moment.js and moment-timezone in MongoDB shell

Load moment.js and moment-timezone into the MongoDB shell — with a mongorc.js snippet for automatic loading.

Mastodon Default Image Locations, Sizes and Other Information for Administrators

Where Mastodon v1.3.1 keeps its default images (app/assets/images), with a size-annotated file listing.

How to fork from GitHub to Bitbucket as Private repository while developing

How to run a public GitHub repository as a fork inside a free Bitbucket private repository.

[Docker] How to resolve Error response from daemon: Container xxx is restarting, wait until the container is running

How I recovered from Docker's 'container is restarting' error using docker rm and docker-compose up -d.

Mastodon email sending configuration - Gmail Edition

How to configure a self-hosted Mastodon instance to send email through Gmail via .env.production SMTP settings.

[Linode] How to find Coupon Code and Referral Code

Finding Linode coupon codes and using a referral code at signup.

Mastodon usage guide, server setup, and useful tools summary

Curated references on Mastodon usage, server setup on Sakura Cloud / VPS / AWS, and useful tools.

Web scraping with Google Apps Script ~ Checking if a page contains specific text

A Google Apps Script sample for checking whether a page contains a specific string via UrlFetchApp.

[Mac] terminal-notifier is convenient for notifying when Terminal commands complete!

How to install and use terminal-notifier to get Mac notifications when long Terminal commands finish.

Useful articles for getting started with Apache Cordova

A curated list of articles and docs that helped me get started with Apache Cordova alongside the Ionic framework.

How to check Ionic Framework version

How to check the Ionic Framework main and CLI versions with npm info, ionic --version, and package.json.

Which CSS framework should engineers who aren't good at frontend adopt? → Bootstrap is still recommended

In-house engineers weigh in on Bootstrap, Semantic UI, Foundation, and Materialize — Bootstrap wins.

Google Sheets Data Validation that only allows null string or 1 ~ 100

A Google Sheets custom validation combining OR / AND / ISNUMBER / GTE / LTE to allow only 1-100 or a null string.

[Ubuntu] How to handle messages saying packages can be updated or updates are security updates

How to handle the 'packages can be updated' message on Ubuntu with apt-get update and upgrade.

Points to check when configuration file specified in Serposcope's Dserposcope.conf is not loaded

Serposcope ignored `-Dserposcope.conf` because I had the `java` command options in the wrong order.

[MySQL] How to configure my.cnf (Mac + Homebrew Edition)

How to configure my.cnf for MySQL installed with Homebrew on Mac.

Change MySQL character encoding to UTF8

Steps to switch MySQL 5.7's character encoding to UTF8 via my.cnf.

Free VPN Service Tunnello Recommended

How to install and use Tunnello, a Chrome extension VPN service with 1GB free per month.

[Mocha] Execution order of before, beforeEach, after, afterEach

The execution order of Mocha's before, beforeEach, afterEach, and after hooks with sample code.

Vue.js Tokyo v-meetup="#3" Participation Report #vuejs_meetup3

A personal summary of the sessions I attended at Vue.js Tokyo v-meetup #3.

CAPTCHA Frequency with Search Ranking Checker Tool Serposcope

A case study of tuning Serposcope to keep CAPTCHA occurrences under 10 across about 6000 keywords.

[MongoDB] Query to Get Documents with nth Decimal Places and Update with mth Decimal Place Values

Use $where and `toFixed(2)` to round prices with 3+ decimal places down to two.

How to use Windows on Mac for free (IE, Edge only)

Set up IE and Edge testing on a Mac for free using VirtualBox and ievms.

Inside Frontend #1 Participation Report #insideFE

Notes and impressions from the sessions I attended at the Inside Frontend #1 conference.

[Mongoose] Using Only createdAt with timestamp options

How to keep only createdAt in Mongoose by implementing it yourself in pre save/update hooks.

How to Build a Proxy Server with Squid3

Steps for building an HTTP proxy server on Ubuntu using Squid 3.x.

Price Comparison of CAPTCHA Breaking Services Compatible with Search Ranking Checker Tool Serposcope

A price comparison of four CAPTCHA breaking services that work with Serposcope, with a monthly cost estimate.

Practicing the Pomodoro Technique with the Toggl App

Turning on Pomodoro timer settings in the Toggl app to run the technique in a familiar tool.

I Tried Using Free Proxies with Search Ranking Checker Tool Serposcope but It Didn't Work

I hooked Serposcope up to free proxies, but CAPTCHAs made it completely unusable.

Steps to Install Search Ranking Checker Tool Serposcope on Ubuntu

Install the Serposcope 2.6.0 deb package on Ubuntu and start the service to expose the rank checker.

How to Install Java 8 on Ubuntu 16

Add the webupd8team PPA and install Oracle Java 8 on Ubuntu 16.04 for a serposcope host.

Free WordPress Cache Plugin Comparison

Comparing free WordPress cache plugins from an Nginx + PHP-FPM operator's perspective.

Installing iftop on Mac

After brew install iftop, the binary wasn't on PATH, so I symlinked it into /usr/local/bin/.

Options I Use with ssh-keygen When Creating SSH Public and Private Keys

The ssh-keygen options (-t, -b, -f, -C, -l) I regularly use to create SSH key pairs.

[JavaScript] How to Get the Number of Decimal Places

A getDecimalPlace helper that uses toString().split('.') to count decimal places in JavaScript.

[JavaScript] Remove All Elements with Specified ID or Class Name

Pure JavaScript functions to remove DOM elements by id or class name, no jQuery required.