Easy WSL + Oh My Zsh w/ Powerlevel10k walkthrough

Follow along to setup WSL and Z shell, an alternative to bash with awesome plugin and theme support. This setup uses the popular Oh My Zsh Zsh configuration framework to manage plugins and themes (it also comes bundled with a suite of aliases and helpers) and the impressive, Powerlevel10k Zsh theme.

WSL and Ubuntu
1. Enable features for WSL and WSL 2
2. Install Ubuntu
VS Code
Windows Terminal
Zsh and Oh My Zsh
1. Install and setup Zsh
2. Install Oh My Zsh
Powerlevel10k
Install Zsh plugins
Next steps
Revert to bash

WSL and Ubuntu

The following section details how to install WSL installing the latest LTS of Ubuntu.

Enable features for WSL and WSL 2

Open Windows PowerShell as Administrator

Install WSL via:

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart

Updating to WSL 2 is more involved. WSL 2 requires Windows Build 19041. For the time being, the most straight-forward method of updating to this build is to join Windows Insider.

To verify which Windows build you are running, open Settings and select System. Scroll to Windows specifications and note the value for OS build.

If you meet the requirements:

Enable the required feature:

dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart

Restart your machine.
Open Windows PowerShell and run the command: wsl --set-default-version 2

I skipped enabling WSL 2, and it hasn't issues as far as I can tell. I will likely revisit this once the build is distributed via Windows Update.

Install Ubuntu

To install the latest Ubuntu LTS version (i.e. 20.04):

Open Windows Store and search for Ubuntu (quick link). Select Ubuntu (note you can verify the Ubuntu version by selecting More) and then select Install.
Launch Ubuntu to complete installation.
Create a user account by entering a User Name, i.e. your first name (typically lowercase) and a password.

See also: Change or recover your password
Update packages enter: sudo apt update && sudo apt upgrade

Note you may need to right click or ctrl+shift+v to paste.

Press [enter] to select Y at the prompt to install any package updates.

We'll switch to Windows Terminal in a following step, as the default WSL/Ubuntu terminal emulator is not the greatest.

VS Code

If you're a VS Code user some light setup is required for proper WSL use, namely installation of the Remote - WSL extension or the Remote Development extension pack.

Remote - WSL contains just the requirements for using WSL where as Remote Development contains a bundle of remote dev tools.

VS Code will prompt you to install Remote - WSL after it detects that WSL is installed. Alternatively, install either extension via the extensions tab in VS Code or with the Install button on the extensions' page.

Windows Terminal

This section details how to install and configure Windows Terminal.

Install Windows Terminal

To install Windows Terminal, open Windows Store. Search for and install Windows Terminal. I suggest pinning Windows Terminal to your start menu or taskbar.

Update default profile

The default profile shown when you launch Windows Terminal is Windows PowerShell. Selecting the dropdown reveals Ubuntu.

To change the default profile:

Enter ctrl+, to open the settings file for Windows Terminal in you default editor.
Locate the guid for WSL/Ubuntu and then copy and paste this value in the defaultProfile property.

Configure Windows Terminal

See settings.json in this repo for reference.

Include the following settings for profiles.defaults:

"defaults": {
    // Put settings here that you want to apply to all profiles.
    "font": {
        // "face": "MesloLGS NF",
        "size": 9
    },
    "fontSize": 9,
    "snapOnInput": true,
    "historySize": 9001,
    "acrylicOpacity": 0.85,
    "useAcrylic": true,
    "closeOnExit": true
},

Leave fontFace commented until you install the font in a following section.

Hide irrelevant profiles by setting the hidden property to true.

Zsh and Oh My Zsh

The following section details how to install Zsh and Oh My Zsh.

Install and setup Zsh

To install Z shell and set it as your default shell run:

sudo apt install zsh
chsh -s /bin/zsh

Log out and login back again to use your new default shell.

If you have no .zsh[...] files in your home directory you will be prompted. Feel free to run through the configuration wizard however this will get replaced by Oh My Zsh. I recommend selecting 2 at the prompt to create a .zshrc with defaults.

Install Oh My Zsh

To install Oh My Zsh run:

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

If you had a .zshrc file it's now backed up as .zshrc.pre-oh-my-zsh and replaced with a new configuration file which loads Oh My Zsh.

Powerlevel10k

The following section outlines how to install the Powerlevel10k Zsh theme. The recommended font for p10k works well in Windows Terminal.

Install fonts

First, manually install the recommended Meslo Nerd Font (patched for p10k) - found here.

To install, download and double-click each variation and select install.

Note: If using Windows Terminal, enable the font by adding "fontFace": "MesloLGS NF" to profile.defaults or the WSL profile.

Install theme

To install p10k:

Run: git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/themes/powerlevel10k
Set ZSH_THEME="powerlevel10k/powerlevel10k" in ~/.zshrc.

Run configuration wizard

Restart your shell by logging out logging back in. The configuration wizard should start automatically, otherwise run p10k configure.

Follow prompts to configure p10k to your liking. First, it prompt you to verify whether you see given icons. Afterwards, you'll be prompted for ui preferences. These are up to you. The following choices work well but go crazy.

Prompt Style: Rainbow
Character Set: Unicode
Show Current Time: 24-hour format
Prompt Separators: Slanted
Prompt Heads: Sharp
Prompt Tails: Flat
Prompt Height: Two Lines
Prompt Connection: Solid
Prompt Frame: Left
Connection & Frame Color: Dark
Prompt Spacing: Sparse
Icons: Many Icons
Prompt Flow: Concise
Enable Transient Prompts: yes
Instant Prompt Mode: Verbose

If you don't like what you came up with restart or remove your .p10k.zsh file.

See p10k.zsh in this repo for reference.

The configuration I'm using at any given time is found in my deanbot/dotfiles repo.

Enable battery indicator

Edit .p10k.zsh
Uncomment the battery # internal batter line in the list of POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS and save.
Run: source ~/.p10k.zsh to see changes.

Install Zsh Plugins

Most plugins are installed automatically with Oh My Zsh by editting plugins in .zshrc.

The following suggested plugins have minimal installation steps:

To install zsh-autosuggestion and zsh-syntax-highlighting:

Run the following commands one at a time:

git clone https://github.com/zsh-users/zsh-autosuggestions.git $ZSH_CUSTOM/plugins/zsh-autosuggestions
git clone https://github.com/zsh-users/zsh-syntax-highlighting.git $ZSH_CUSTOM/plugins/zsh-syntax-highlighting

Permissions on these two plugins may be too permissive (you'll be warned by zsh the next time you log into your shell). To correct this run:
```
cd $ZSH_CUSTOM/plugins/
sudo chmod 755 ./zsh*
cd ~
```
Edit .zshrc via your preferred editor be it nano, micro, VSCode, etc (i.e. for VSCode code ~/.zshrc).
update the plugins line to: plugins=(git zsh-autosuggestions zsh-syntax-highlighting) and save.

Next steps

Where to go from here? Some suggestions in no particular order:

Review/adjust Windows Terminal keybindings.
Extend dot files with your desired aliases or path modifications.
Familiarize yourself with Zsh and browse tips & tricks from the community.
View the Oh My Zsh cheatsheet.
Explore the Oh My Zsh plugins directory.
Customize p10k.

Revert to Bash

If you'd like to return from Zsh to bash this can be easily done:

Uninstall Oh My Zsh (ref): uninstall_oh_my_zsh
Set default shell to bash: chsh -s $(which bash)

deanbot / easy-wsl-oh-my-zsh-p10k