Set up macOS Big Sur 11.2 with development tools | Git | Homebrew | rbenv | ruby | Atom | PostgreSQL | mongodb

SETUP.md

Set up macOS Big Sur 11.2

Contents:

• 1 git
• 2 Homebrew
• 3 rbenv
• 4 ruby
• 5 Atom
• 6 Databases

1 git

1.1 Install

Open the terminal and type git. If it not already installed, you will see a dialog box with a button to "Install" it. Click on it and git will be installed in a couple of minutes.

% git --version
git version 2.24.3 (Apple Git-128)

1.2 Configure

Configure the username and email to be used for git.

% git config --global user.name jagdeepsingh
% git config --global user.email jagdeepsingh.125k@gmail.com

1.3 Generate a new SSH key

% ssh-keygen -t ed25519 -C "jagdeepsingh.125k@gmail.com"
Generating public/private ed25519 key pair.
...
Your identification has been saved in /Users/jagdeepsingh/.ssh/id_ed25519.
Your public key has been saved in /Users/jagdeepsingh/.ssh/id_ed25519.pub.
...

1.4 Add your SSH key to the ssh-agent.

# Start the ssh-agent in the background
% eval "$(ssh-agent -s)"
Agent pid 744

# Create the config file, if it doesn't exist
% touch ~/.ssh/config

# Open the file and add following contents to it
Host *
  AddKeysToAgent yes
  IdentityFile ~/.ssh/id_ed25519

NOTE: If you chose to add a passphrase to your key in previous steps, please visit above doc to check the contents for ~/.ssh/config.

# Add your SSH private key to the ssh-agent
% ssh-add ~/.ssh/id_ed25519
Identity added: /Users/jagdeepsingh/.ssh/id_ed25519 (jagdeepsingh.125k@gmail.com)

Again, if you chose to add a passphrase to your key in previous steps, please refer the docs.

1.5 Add your SSH key to GitHub account

Copy the SSH public key to your clipboard.

% pbcopy < ~/.ssh/id_ed25519.pub

Add it to "SSH Keys" under "Settings > SSH and GPG Keys". When copying your key, don't add any newlines.

2 Homebrew

% /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
# Enter your MacBook password when prompted.

% brew -v
Homebrew 3.0.0
Homebrew/homebrew-core (git revision d6c297; last commit 2021-02-11)

3 rbenv

% brew install rbenv

% brew upgrade rbenv ruby-build
Updating Homebrew...
Warning: rbenv 1.1.2 already installed
Warning: ruby-build 20210119 already installed

% rbenv -v
rbenv 1.1.2

Set up rbenv in your shell.

% rbenv init
# Follow the printed instructions generated by this command.

Close your terminal window and open a new one for changes to take effect.

Verify that rbenv is properly set up by running:

% curl -fsSL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-doctor | bash
Checking for `rbenv' in PATH: /usr/local/bin/rbenv
Checking for rbenv shims in PATH: OK
Checking `rbenv install' support: /usr/local/bin/rbenv-install (ruby-build 20210119)
Counting installed Ruby versions: none
  There aren't any Ruby versions installed under `/Users/jagdeepsingh/.rbenv/versions'.
  You can install Ruby versions like so: rbenv install 2.2.4
Checking RubyGems settings: OK
Auditing installed plugins: OK

4 ruby

% rbenv install 2.6.6

Check the installed ruby versions.

% rbenv versions
  system
* 2.6.6

Check the current active version.

% rbenv version
2.6.6

Use a specific version.

% rbenv local 2.6.6

Test the installation success by running irb in terminal.

Optionally, update the rubygems.

% rbenv global 2.6.6
% rbenv rehash

# Close the terminal and open again
% gem update --system

See full rbenv cheetsheet for more commands.

5 Atom

Download and Install "Atom", and then Move it into "Applications" folder.

Open "Atom" and install shell commands (e.g. atom) by clicking on "Atom > Install Shell Commands".

6 Databases

6.1 PostgreSQL

% brew install postgresql

% postgres --version
postgres (PostgreSQL) 13.1

To have launchd start postgresql now and restart at login:

% brew services start postgresql

Create role "postgres" by running:

% /usr/local/opt/postgres/bin/createuser -s postgres

Login to the server. Reference

% psql postgres
psql (13.1)
Type "help" for help.

postgres=#

You can run your PostgreSQL queries here.

6.2 mongodb

% brew tap mongodb/brew

% brew install mongodb-community

To have launchd start mongodb/brew/mongodb-community now and restart at login:

% brew services start mongodb/brew/mongodb-community

Test the installation success by running mongo in terminal.