Set up your shell

A nicer terminal with Zsh and Oh My Zsh on Mac and Linux, or PowerShell 7 with a profile on Windows.

Install Oh My Zsh
Terminal
```
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
```
Zsh is already your Mac's shell. This adds themes, plugins and a better prompt.
Open your settings file to pick a theme or plugins
Terminal
```
open -e ~/.zshrc
```
Change the ZSH_THEME line, save, then open a new terminal window.

Check it worked

Check Oh My Zsh is loaded
Terminal
```
echo $ZSH
```
You should see a path ending in .oh-my-zsh.

Undo it

Remove Oh My Zsh
Terminal
```
uninstall_oh_my_zsh
```

Install ZshNeeds sudo
Terminal · Ubuntu / Debian
```
sudo apt install -y zsh
```
Make Zsh your default shell
Terminal · Ubuntu / Debian
```
chsh -s $(which zsh)
```
Log out and back in for this to take effect.

Install Oh My Zsh

Terminal · Ubuntu / Debian

sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

Check it worked

Check your shell
Terminal · Ubuntu / Debian
```
echo $SHELL
```
You should see /usr/bin/zsh.

Undo it

Go back to Bash
Terminal · Ubuntu / Debian
```
uninstall_oh_my_zsh
chsh -s $(which bash)
```

Install PowerShell 7
PowerShell
```
winget install Microsoft.PowerShell
```
Windows comes with the older PowerShell 5. Open "PowerShell 7" from the Start menu afterwards.

Create your profile (your settings file)

PowerShell

if (!(Test-Path $PROFILE)) { New-Item -Path $PROFILE -ItemType File -Force }

Add a nicer prompt with Oh My Posh

PowerShell

winget install JanDeDobbeleer.OhMyPosh
Add-Content $PROFILE 'oh-my-posh init pwsh | Invoke-Expression'

Open a new PowerShell 7 window to see it.

Check it worked

Check your PowerShell version
PowerShell
```
$PSVersionTable.PSVersion
```
The Major number should be 7.

Undo it

Remove Oh My Posh
PowerShell
```
winget uninstall JanDeDobbeleer.OhMyPosh
```
Then delete the oh-my-posh line from your profile with `notepad $PROFILE`.