title: Brew Installation(No Root Edition) author: Pyrox Rabach ...

Intro

Topics

Why would you need this?
What do you need to do this?
How do you do this?

Why would you need this?

Background

Homebrew is a package manager for macOS
It is simple, written in Ruby, and has a large selection of packages
- ~5800 formulae and ~4000 casks at the time of writing.

What are formulae and casks?

Formulae are what you normally install from a package manager(apt, pacman, dpkg, nix, kiss, etc.)
Casks are the magic of homebrew. These are .app packages, which are the apps that you use every day.
- Things like Zulip, Firefox, and more. This also includes closed-source software like DaisyDisk.

What do you need?

Basic tools

Git
A C Compiler
bash
macOS Mojave or higher

How to install these tools

macOS
- For 2 of these tools(Git and a C Compiler), just run this command in your terminal.
- xcode-select --install

Other requirements

You need my script.
You can find the script at Github
Download the brew-easy-install.sh script, and save that in your Downloads folder.

How?

Starting

Open your terminal.
- Press Command and Space at the same time, a window should open in the middle of your screen.
- Type Terminal.app, and press Enter.
- A window with white text and a black background should open. This is the Terminal.

Installing prerequisites

Type the following into your terminal:
- xcode-select --install
- A window should pop up with a progress bar.
- Click on that window and wait. Please don't do anything else.
- if you do something else on the system, it may fail and you may need to restart.
- Once it finishes successfully, let me know and I'll double-check the installation.
- Installation may take a few minutes, so ask me any questions you want to now.

Running my script

Type the next three lines, pressing Enter after each one.
- cd Downloads
- chmod u+rwx ./brew-easy-install.sh
- I will explain every command we have run once we are done.
Next, type this line, and press Enter.
- ./brew-easy-install.sh
Finally, type this line, and press Enter.
- rm -f ./brew-easy-install.sh

Commands explanation

`xcode-select`

The structure of this command is xcode-select [flags]
Xcode is the text editor designed for running and creating macOS apps.
- It requires admin to install, and also 10+ GBs of space, so we aren't installing that.
xcode-select is the CLI(Command Line Interface) to a specific set of Xcode features.
- The feature that we use is the --install flag, which installs the Xcode CLTs(Command Line Tools)
- This allows us to install common developer tools, such as git and clang, which are the tools we need for this.
Any questions?

`cd`

The structure of this command is cd [directory]
cd stands for "Change Directory". It is a command that you can use on any machine that runs Linux or macOS.
The function of the command is to, well, change directories.
- Directory is just a fancy name for folder.
Any questions?

`chmod`

The structure of this command is chmod [permissions] [file]
This command allows you to manipulate the permissions a file has
The permissions are read, write, and execute.
In order to add permissions to the user, you do u+[permissions], and to remove them, you do u-[permissions].
By changing the plus to a hyphen, we remove the permissions from the file.
Any questions?

`rm`

The structure of this command is rm [flags] [files/folders]
rm is used to remove files and folders.
We use the -f flag to force it to remove the file. This is a very dangerous thing to do. Don't do it normally.
Any questions?

Misc things

You may have noticed that we put a ./ before the name of the script.
This is because the shell will not be able to find the script if we don't do this
In the shell, . stands for the CWD(Current Working Directory).
- This means that writing ./ before the name of a script will make it only look for scripts in the current folder.
Any questions?

Done! Any more questions?