How to Create Digital Stamps for Free with Adobe Acrobat Reader and Stamp PDFs

Creating a free personal digital stamp with Adobe Acrobat Reader and applying it to a PDF approver field.

Managing Claude Code, Codex, and Gemini CLI with Homebrew and mise

To simplify setup across multiple Macs, I migrated Codex CLI and Gemini CLI to Homebrew and Claude Code to mise's install script.

Batch Output Amazon Receipts with 'Amazon Order History Filter' and Split with pdfseparate Command

Batch-export Amazon receipts with the Amazon Order History Filter extension and split the PDF with pdfseparate.

How to Install asdf [macOS Edition]

Installing asdf on M1 macOS with Homebrew and wiring it into zsh via `.zshrc`.

[Mac] How to Fix brew Command Not Working in Yosemite

How to fix the brew command on Mac OS X Yosemite when it fails with a bad interpreter error.

How to fix 'fatal: cannot create directory at '.github': Permission denied' error with brew update

How to fix brew update's Permission denied error by chown-ing /usr/local and resetting the Homebrew repo.

[Mac] Fixing 'Error: /usr/local must be writable!' with brew update

Notes on recovering from brew update's /usr/local must be writable! error via chown and brew prune.

How to Install dbt CLI [macOS Edition]

Installing dbt CLI on macOS via Homebrew and checking the version.

Dropbox CLI dbxcli Installation and Initial Setup [macOS Edition]

Installing dbxcli on macOS via Homebrew, logging in, and trying uploads from the CLI.

PDF File Difference Checking Tool: diff-pdf

Installing diff-pdf and using --view to visually compare two PDFs on macOS.

How to Manage Environment Variables with direnv

A walkthrough of managing per-directory environment variables with direnv, from install to direnv allow.

How to Install Docker Desktop on an Existing Docker CLI Environment (macOS Homebrew)

Learn how to resolve completion file conflicts when installing Docker Desktop on an environment with only Docker CLI, using the --force option.

Converting mp3 to mp4 using FFmpeg to upload audio files to YouTube [macOS Edition]

Combine an mp3 and a jpg into an mp4 with FFmpeg on macOS for uploading audio to YouTube.

Enable CLI and Terminal auto-completion with Fig

Install Fig via Homebrew on macOS to add IDE-style autocompletion to your Terminal.

fish shell Installation Steps [macOS Edition]

Installing fish shell on macOS via Homebrew and switching the login shell to fish.

fish shell Uninstallation Steps [macOS Edition]

Switching my macOS login shell back to zsh and uninstalling fish shell after hitting nvm compatibility issues.

Installing geth (go-ethereum) and Connecting to Private Network [MacOS Edition]

Install geth on macOS via Homebrew and connect to an Ethereum private network.

How to set animated GIFs to loop playback

Using gifsicle's --loopcount and --batch options to configure loop playback for animated GIFs.

How to Install GIMP [macOS Edition]

Installing GIMP on macOS with Homebrew Cask and launching it for the first time.

[Git] diff-highlight: command not found Error

Symlink Homebrew Git's contrib/diff-highlight into your PATH to fix the command not found error.

[GitHub] Making PullRequests Easier with the hub Command

Use the hub CLI to send GitHub Pull Requests from the command line instead of a browser.

[Mac] Steps to install GMP with Homebrew

Install GMP, the arbitrary precision arithmetic library, on macOS with a single `brew install gmp`.

How to Update Heroku Command (heroku-cli) to the Latest Version

Updating heroku-cli to the latest version with Homebrew on macOS to silence the update available notice.

[Homebrew] brew missing, imagemagick: xz

Resolving a brew doctor warning by installing the missing xz dependency required by ImageMagick.

[Homebrew] brew upgrade Warning: No developer tools installed. -> Run `xcode-select --install`

Resolving a 'No developer tools installed' warning from brew upgrade by running xcode-select --install.

[macOS] Code Management of Homebrew Installations with Brewfile

Managing Homebrew installations as code with a Brewfile to make Mac migration painless.

Became a GitHub Sponsor of Homebrew

I became a GitHub Sponsor of Homebrew. It started when I visited the GitHub repository while organizing my Brewfile and discovered that I could sponsor the project.

How to Update and Upgrade Homebrew

The difference between brew update and brew upgrade, and how to use each command.

HTTrack - Tool for Saving Entire Websites - macOS Edition

How to install HTTrack on macOS via Homebrew and mirror a whole website for offline browsing.

After upgrading to Mac OS X El Capitan, hub command stopped working, but 'brew upgrade hub' fixed it

The hub command broke with ArgumentError after upgrading to El Capitan, and 'brew upgrade hub' fixed it.

[Mac] Steps to install ImageMagick with Homebrew

A quick note on installing ImageMagick on macOS with a single Homebrew command.

How to install Ansible 2 on Mac

A quick note on installing the Ansible 2.x series on macOS with Homebrew.

Steps to quickly install Elasticsearch on Mac with Homebrew

Install Java and Elasticsearch via Homebrew, start the service, and add the elasticsearch-head plugin.

Installing iftop on Mac

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

[Mac] Installing Nginx with Homebrew

brew install nginx on Mac and set it to auto-start via LaunchAgents with launchctl.

[Mac] Installing PHP5.4 with Homebrew

Tap josegonzalez/homebrew-php and install PHP 5.4 on Mac with fpm, intl, and pgsql options.

How to Install Python 3 on macOS High Sierra

Run brew install python3 on macOS High Sierra to get Python 3.7, then verify python3 and pip3.

[Git] Installation Steps for CUI Tool tig

brew install tig to get the Git CUI browser tig set up on Mac quickly.

Lossless compression of JPEG images with Jpegoptim

Losslessly compress JPEGs on macOS with Jpegoptim from Homebrew, plus a one-liner for batching a whole directory.

jpegtran Command to Remove Metadata from jpeg and jpg Image Files

Strip Exif metadata from JPEGs with jpegtran on macOS, plus a find + -exec one-liner to batch a directory.

JsDoc Toolkit Introduction

Intro notes on JsDoc Toolkit — reference sites, Homebrew install, and templates.

[Mac] Development Environment Setup Procedure Memo

A memo on setting up GCC, Homebrew, zsh, SSH, and gitconfig for a Mac development environment.

[Mac] Completely Uninstall Elasticsearch Installed with Homebrew

Fully uninstalling a Homebrew-installed Elasticsearch, including its data and log directories.

[Mac] Essential Homebrew Packages to Install

A 2013 list of essential Homebrew packages to install on Mac.

[Mac] How to Install apple-gcc42 with Homebrew

How to install apple-gcc42 from the homebrew-dupes Formula and use the classic gcc-4.2 command on macOS.

[JavaScript] Installing SpiderMonkey on Mac with Homebrew

Installing SpiderMonkey with Homebrew so you can run JavaScript from the console via the js command.

[Mac] Installing OpenSSL with Homebrew

A memo on installing OpenSSL via Homebrew and using brew link --force to replace the macOS default.

[Mac] After Installing Homebrew, Got Error "Warning: Now install Xcode: http://developer.apple.com/technologies/xcode.html"

The 'Warning: Now install Xcode' Homebrew message was fixed by installing Xcode from the App Store.

[Mac] Installing MySQL with Homebrew

Installing MySQL via Homebrew on macOS, setting up auto-start, and logging in as root.

[Mac] Installing nkf with Homebrew

Installing the nkf character encoding converter on macOS with brew install nkf.

[Mac] How to Install Node.js and npm [Homebrew]

Installing Node.js via Homebrew and npm via the curl-based install.sh on macOS.

[Mac] Installing Redis with Homebrew

Installing Redis via Homebrew, setting up launchctl auto-start, and connecting with redis-cli.

[Mac] Installing tree Command with Homebrew

Installing the tree command on macOS via Homebrew to visualize directory structures.

[Mac] How to Install wget

Installing wget on a Mac quickly via Homebrew.

[Mac] zsh Installation Steps and Configuration Memo

Switching the default Mac shell from bash to zsh via Homebrew, then configuring oh-my-zsh.

[macOS] Installing Homebrew (and Git While We're at It)

Installing Homebrew on macOS, verifying with brew doctor, and then installing Git through the package manager.

[MacOS] How to Uninstall All Versions of PostgreSQL ~ Homebrew Edition

Using brew uninstall --force to remove every Homebrew-installed PostgreSQL version on macOS, plus cleaning up the data directory.

macOS Initial Setup 2026 Edition

With a three-MacBook development setup, I had the chance to start from scratch. Here's my step-by-step workflow from Xcode Command Line Tools to a full Brewfile-based bulk install, documented as a work log.

How to Install Vim on Mac OS X Lion with Homebrew

Reinstalling Vim with +ruby on Mac OS X Lion via Homebrew, working around a libruby link error by switching to Ruby 1.8.7.

[MacOS] Steps to Install PostgreSQL with Homebrew

Installing PostgreSQL on macOS via Homebrew — initdb, launchd auto-start, PGDATA, and a non-superuser account.

Steps to Build Ruby on Rails Development Environment on Mac [Ruby 1.8.7]

Setting up a Rails development environment on macOS with the system Ruby 1.8.7, RubyGems, Rails, and SQLite3.

[Mac] Installing Ruby and Rails with RVM

How to install Ruby and Rails on Mac with RVM, pulling in dependencies through Homebrew.

Issuing SSL Server Certificates for Local Environment with mkcert

Issuing SSL/TLS certificates for localhost with mkcert, from install to multi-domain certs.

[Mac] Installing MongoDB with Homebrew

Installing MongoDB with Homebrew on macOS and setting it up as a launchd auto-start service.

[MongoDB] How to start two instances on different ports (Mac / Homebrew)

Run two Homebrew MongoDB instances side by side on ports 27017 and 27018 with a second config.

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

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

ngrok Installation and Public URL Checking Methods [macOS Edition]

A quick guide to installing ngrok on macOS and checking the public URL in three ways.

[Node.js] Using node-wkhtmltopdf

How to install wkhtmltopdf via Homebrew so you can use node-wkhtmltopdf from Node.js.

Error: Cannot find module '../build/Release/sodium' solution [macOS Edition]

Fixing the Node.js 'Cannot find module sodium' error on macOS with Homebrew's libsodium and a fresh npm install.

[Node.js] How to Install the Version Management Tool nodebrew on Mac

Installing the Node.js version manager nodebrew on Mac, with fixes for build-time issues.

[Node.js] How to Install the Version Management Tool nvm on Mac

A quick memo on installing the Node.js version manager nvm on Mac.

[Ruby] How to Install Nokogiri [Mac Version]

Installing Nokogiri on Mac with Homebrew's libxml2/libxslt and a source-built libiconv.

[Ruby] WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8

Fixing the Nokogiri vs LibXML version mismatch warning by reinstalling libxml2 libraries via Homebrew.

Lossless compression of PNG images with OptiPNG

Using OptiPNG on macOS to losslessly compress PNGs, individually or in a batch.

pdftoppm Command for Batch Converting PDF to Image Files on macOS

Batch converting PDF files to jpeg or png on macOS with pdftoppm, plus installing poppler via Homebrew.

How to Install PlantUML in VSCode (macOS Edition)

Installing the PlantUML extension in VSCode on macOS, with openjdk and graphviz via Homebrew.

Got Library not loaded: libreadline error when running psql, so I ran brew upgrade postgresql

How I fixed a psql libreadline error with brew upgrade postgresql and pg_upgrade.

[macOS] Random String Generation Command for Passwords: pwgen

Installing and using pwgen on macOS to generate random password strings, including symbol characters.

Remove Password from PDF Files with qpdf Command

Remove passwords and print restrictions from PDFs from the CLI using the open-source qpdf command.

QR Code Generation Command: qrencode

Install the qrencode command and generate QR codes safely from the CLI on CentOS, macOS, or Ubuntu.

Solution for rbenv/x.x.x/libexec/rbenv: No such file or directory

Fixing the rbenv/x.x.x/libexec/rbenv: No such file or directory error by running rbenv rehash.

[macOS] Rectangle App for Window Management with Keyboard Shortcuts

Rectangle lets you split and resize macOS windows with keyboard shortcuts — install via Homebrew in one command.

Solution for bundle/gem install rmagick error: Can't find MagickWand.h

Fixed the rmagick MagickWand.h build error by switching to Homebrew's imagemagick@6.

[Ruby] Solution for ERROR: cannot discover where libxml2 is located on your system. please make sure `pkg-config` is installed.

Fixing nokogiri's libxml2/pkg-config install error on macOS by installing the libraries with Homebrew and using system-libraries.

[RVM][Mac] Error running 'make ', please read ruby-1.9.2-p290/make.log

Working around a Ruby 1.9.2 make error on Mac OS X Lion by installing apple-gcc42 and using CC=gcc-4.2.

[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.

Japanese Text Recognition from Images Using Tesseract OCR [macOS Edition]

Install Tesseract OCR on macOS, add the Japanese trained model, and recognize Japanese text from images.

Resolved tfenv install Error with brew install grep

Fixing a `tfenv install` error caused by missing GNU Grep with `brew install grep` on macOS.

Introduction to Terraform Version Management Tool tfenv [macOS Edition]

Getting started with tfenv on macOS to manage multiple Terraform versions across projects.

Installed VLC Due to QuickTime Freezing Bug on macOS 14 Sonoma

Working around QuickTime freezes on macOS 14 Sonoma by installing VLC via Homebrew Cask.

Fixing whois Command Character Corruption with nkf [macOS]

Pipe whois through nkf to fix garbled Japanese output on macOS.

[macOS] dyld: Library not loaded: /usr/local/lib/QtWebKit.framework/Versions/4/QtWebKit

Fixing the wkhtmltopdf QtWebKit dyld error on macOS High Sierra with a Homebrew Cask reinstall.