Numonic

A spectacular shell prompt and associated tooling for macOS and *nix distributions

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Features

Numonic is a prompt for sh (any posix shell), bash, and zsh on *nix distributions that includes a ton of useful functionality, including:

installation and configuration of the amazing starship prompt
- auto-installation of the fabulous Fira Code Nerd Font - a prerequisite for starship
a dark-mode theme for several terminal programs across various platforms
automatic registration of tab completion for the shell, even for many tools not installed via numonic itself
- kubectl
- helm
- terraform
- docker
- podman
- nerdctl
- npm
- aws
- gcloud
- az
user-level environment variable management with dynamic directory support
- environment variables are loaded automatically when cd-ing into a directory containing a .userenv file
a ton of git extensions to make working with forks and complex workflows easier
- these are essentially the kit of git aliases that most (if not all) git experts have in their arsenal
integration with nvm with support for .nvmrc files that will switch the version of node as required based on the current path
user-level installers for cloud sdks and developer tools, including aws, azure, and google cloud
- configuration that "just works" on any developer machine, including Windows Subsystem for Linux (WSL)
- configure rootless podman or containerd with nerdctl
- most do not require any privileged access (sudo)
pre-defined functions for printing successes, warnings, and failures in colour
- great for use in your own scripts without re-inventing the wheel
... and much more!

Prerequisites

The following prerequisites are required for most numonic commands to function:

curl >= 6
git >= 2.0
gpg / gnupg >= 2.0
homebrew (mac-only)
jq - >= 1.4
a nerd font for your terminal program of choice OR use our theme

The latest available versions of these will be installed for your distribution by default. If you wish to skip automatic installation, such as on systems where sudo permissions are not available, you can pass the --no-dependencies flag to the bootstrap / installer. Note that doing this will require suitable versions of these prerequisites exist. The existence of the dependencies is verified but not versions. This is done to ensure the greatest compatibility possible within a wide range of secure environments, such as virtual deskops without internet access.

The install (install-aws, install-gcloud, install-azure, etc) scripts may have their own dependencies and will require internet access. Please consult the install documentation for more information.

Operating Systems

While numonic should run on macOS High Sierra or greater and all Linux distributions with either apt, dnf, or yum, we only validate against a few of the more recent versions of popular ones.

NOTE: We only test and support distributions that support both amd64 and arm64 (aarch64) as we have many customers operating on both.

Name	Version
macOS	10.15 (Catalina) and 11.0 (Big Sur)
windows	10 and 11 (WSL 2)
ubuntu	20.04 (Focal) and 20.10 (Impish)
fedora	34 and 35
debian	10 (Buster) and 11 (Bullseye)
centos	8
amazon	Amazon Linux 2

NOTE: Not all capabilities are tested. If you discover any bugs or wish to add your favourite distro to the validated list, please create an issue.

Installation

Install numonic in one step (choose one of the following options):

# install and use zsh (the default)
curl --fail --silent --show-error --location https://numonic.sh/bootstrap.sh | sh -s

# install and use bash
curl --fail --silent --show-error --location https://numonic.sh/bootstrap.sh | sh -s -- bash

NOTE: We believe in transparency and clarity of commands, hence the expanded form for the options above. The -s flag for the shell command means "read commands from standard input". For more information, see the POSIX Specification.

What Happens

Numonic will install the prerequisites above (unless the --no-dependencies flag was set). It will then extract shell scripts and supporting files (such as themes) to $HOME/.local/numonic. Finally, it will create or replace the following files in the $HOME directory:

.pam_environment
.profile
.bash_profile
.bashrc
.zprofile
.zshrc

If you have existing customizations within these startup environment files, they will need to be re-added to the user bashrc and/or zshrc that numonic loads after it is initialized. This may seem invasive (and it is), but experience has taught us that the vast majority of bugs we experience is correlated to changes that developers (or other installers) make to these files with no regard for order. In numonic, any user customizations will always be loaded AFTER numonic is fully initialized. This ensures that these customizations always take precendence. It also will survive upgrades to numonic.

Use the edit-bashrc and edit-zshrc commands to add these customizations.

We do create a backup of these files every time that numonic is installed or upgraded. One can also uninstall numonic and restore their environment back to the way it was before numonic was even introduced via an uninstall-numonic command.

Specific Versions

Although it is NOT recommended (for security reasons), you can install specific versions using any git ref (branch, tag, sha, etc):

# install and use bash with a specific version
curl --fail --silent --show-error --location https://numonic.sh/bootstrap.sh | sh -s -- v1 bash

Updating Numonic

To check for a new version of numonic, run the following command:

# install an update if available
update-numonic

# install an update if available; otherwise, reinstall the current version
update-numonic --force

Numonic can periodically check for updates (once per week) by comparing the commit sha of the currently installed version against the latest available version. It will alert the user each time a new shell is launched if a new version is detected. This can be enabled by setting the NUMONIC_AUTO_UPDATE environment variable:

userenv set NUMONIC_AUTO_UPDATE=1

Backups

We know that prompts can be very personal. As such, we create a backup of any file that we modify each and every time that numonic is installed or updated. These backups are stored in $HOME/.local/backup. You can restore a specific backup via the restore-backup command. You can restore your prompt back to the way it was before numonic was introduced to the system via the uninstall-numonic command. This will restore the earliest (initial) backup and remove numonic from the system. Any tools installed using numonic, such as cloud platform sdks, will remain, however.

sjk07/numonic