How to Install Pyenv on Ubuntu 22.04

January 11, 2024

Due to the slowness of repositories or even lack thereof being updated with specific versions of Python, I’ve decided to move some of my environments over to Pyenv to allow me to dynamically install and configure Python specifically for my environment. As it turns out this will also allow VS Code to allow me to choose the version of Python that I’d like to use when testing. So, here’s a quick guide to installing Pyenv on Ubuntu 22.04

Steps to install Pyenv on Ubuntu 22.04

1. Update and Install Dependencies

We need to ensure our package cache is updated, and then install the dependencies to download, and build Python from Pyenv.

sudo apt-get update && sudo apt-get install make build-essential libssl-dev \

zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm \

libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev

2. Install Pyenv using pyenv-installer

1	curl https://pyenv.run \| bash

3. Configure user profile to use pyenv

Ensure the following is in your ~/.bash_profile (if exists), ~/.profile (for login shells), ~/.bashrc (for interactive shells), or ~/.zshrc

# Load pyenv automatically by appending

# the following to

# ~/.bash_profile if it exists, otherwise ~/.profile (for login shells)

# and ~/.bashrc (for interactive shells) :

export PYENV_ROOT="$HOME/.pyenv"

[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"

eval "$(pyenv init -)"

Optionally enable pyenv-virtualenv

1	eval "$(pyenv virtualenv-init -)"

4. Reload your profile

1	source ~/.bashrc

5. Install python using pyenv

1	pyenv install <version>

6. Set your python version

pyenv shell <version> — select just for current shell session
pyenv local <version> — automatically select whenever you are in the current directory (or its subdirectories)
pyenv global <version> — select globally for your user account

7. Validate your installation of python

1	python3 --version

1	python --version

install, multiple, pip, profile, pvenv, py, python, python3, shell, ubuntu, version, versions, virtualenv

DevOps, Python, System Administration, Ubuntu

Installing ZSH on WSL: Ubuntu

January 7, 2024

Eric Anderson

Having moved away from development of Ansible/Python/Terraform, and others on Windows a few years ago. I’ve heard that WSL has become much better, especially with its support of VS Code now that they have a WSL connector. So, I decided to give it a try.

However, I did run into one surprising inconvenience, BASH! I have become so accustomed to ZSH over the years on Apple and using oh-my-zsh that all my shortcuts and quick ways to doing things just weren’t there.

I did attempt to use oh-my-bash but there just aren’t the number of plugins already to support the plethora of plugins I need and use on a regular basis. So, next logical step is to install ZSH on my WSL: Ubuntu system.

Requirements

WSL with Ubuntu installed

Steps to install ZSH

Install ZSH.

1	sudo apt install zsh

eanderson@MATRIX-WINDOWS:~$ sudo apt install zsh

[sudo] password for eanderson:

Reading package lists... Done

Building dependency tree... Done

Reading state information... Done

The following additional packages will be installed:

zsh-common

Suggested packages:

zsh-doc

The following NEW packages will be installed:

zsh zsh-common

0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.

Need to get 4794 kB of archives.

After this operation, 18.2 MB of additional disk space will be used.

Do you want to continue? [Y/n]

Verify that ZSH has been installed on the system.

1

zsh --version

1
2

eanderson@MATRIX-WINDOWS:~$ zsh --version
zsh 5.8.1 (x86_64-ubuntu-linux-gnu)
Set ZSH as your default shell.
NOTE: This used to require modifications to the shortcut to access WSL but in newer versions of WSL you can use the following.

1

chsh -s /bin/zsh

For older versions you will need to modify the shortcut to WSL and use the command:

1

%systemroot%\system32\bash.exe ~ -c /bin/zsh
Once you close and reopen your WSL Ubuntu shell you should now be in ZSH shell.

Install of Oh-my-zsh

Ensure that your terminal session is open and use the following command as per https://ohmyz.sh/#install

1

sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
You should now be able to configure your oh-my-zsh installation by modifying your .zshrc file and enable any plugins you need.
The final result! 🙂