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mathiasbynens/dotfiles

Analysis updated 2026-06-20

★ 31,331ShellAudience · developerComplexity · 2/5Setup · moderate

TLDR

A curated set of macOS shell configuration files and bootstrap scripts that automate setting up a developer-ready Mac, including shell aliases, hundreds of hidden system preferences, and a Homebrew package list, all applied in one run.

Mindmap

mindmap
  root((dotfiles))
    What it does
      Configures a new Mac
      Automates shell setup
      Applies hidden prefs
    Key scripts
      .macos system prefs
      brew.sh packages
      .aliases shortcuts
      .bash_profile shell
    Who its for
      Developers on Mac
      Terminal-comfortable users
    How to use
      Fork and customize
      Review before running
      Run bootstrap once
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Code map

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What do people build with it?

USE CASE 1

Bootstrap a brand-new Mac to a fully configured developer environment in one script run instead of hours of manual setup

USE CASE 2

Apply macOS system preferences that aren't exposed in the GUI, like faster keyboard repeat rates, showing all file extensions in Finder, or disabling autocorrect

USE CASE 3

Use as a starting point to build your own version-controlled dotfiles repository tailored to your workflow

USE CASE 4

Install a curated set of developer command-line tools via Homebrew in a single automated script

What is it built with?

ShellBashHomebrew

How does it compare?

mathiasbynens/dotfilesvscodium/vscodiumdokku/dokku
Stars31,33131,26531,858
LanguageShellShellShell
Setup difficultymoderateeasymoderate
Complexity2/52/53/5
Audiencedeveloperdeveloperops devops

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

macOS only, read and customize scripts before running, some system preference changes are hard to reverse without knowing what they changed.

In plain English

Dotfiles are hidden configuration files on Unix-based systems (their names start with a dot, hence "dotfiles") that control how your shell, editor, and other tools behave. This repository is Mathias Bynens's personal collection of dotfiles for macOS, sharing his carefully curated shell configuration so other developers can learn from it or use it as a starting point for their own setup. The problem it solves is that setting up a new Mac from scratch is time-consuming, you need to configure your terminal prompt, set up useful command aliases (shorthand commands), configure Git, and apply hundreds of hidden macOS system preferences to make the machine behave the way an experienced developer expects. This repo bundles all of that into a set of scripts you can run once to get a polished, productive environment quickly. The key piece is the .macos script, which uses macOS's built-in defaults command to change system and app settings that are normally buried deep in preference panels or not exposed in the GUI at all, things like faster keyboard repeat rates, showing all file extensions in Finder, or disabling autocorrect. There is also a brew.sh script that installs a curated list of tools via Homebrew (macOS's package manager), and shell configuration files that define a custom prompt, aliases, and helper functions. You would use this repo when setting up a new Mac or refreshing your development environment. The intended audience is developers and "hackers" comfortable with the terminal. The repo is entirely Shell scripts and targets macOS, with Bash as the primary shell. The advice from the README is sound: fork it, review the code, and adapt it to your own preferences rather than applying it blindly.

Copy-paste prompts

Prompt 1
Fork mathiasbynens/dotfiles and help me customize the .macos script to keep the settings I want and comment out the ones that change behaviors I prefer to leave as default
Prompt 2
Using the brew.sh script from mathiasbynens/dotfiles as a template, create a new version that installs my specific list of tools instead of Mathias's list
Prompt 3
Explain what each section of the .bash_profile and .aliases files from mathiasbynens/dotfiles does so I can decide which parts to copy into my own setup
Prompt 4
Help me add a new shell function to the mathiasbynens/dotfiles .functions file that creates a new project folder, initializes a git repo, and opens VS Code in one command

Frequently asked questions

What is dotfiles?

A curated set of macOS shell configuration files and bootstrap scripts that automate setting up a developer-ready Mac, including shell aliases, hundreds of hidden system preferences, and a Homebrew package list, all applied in one run.

What language is dotfiles written in?

Mainly Shell. The stack also includes Shell, Bash, Homebrew.

How hard is dotfiles to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is dotfiles for?

Mainly developer.

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