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oam/knowledge base/asdf.md
2023-05-25 23:55:23 +02:00

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# ASDF
CLI tool to manage multiple language runtime versions on a per-project basis. It works like `gvm`, `nvm`, `rbenv` and `pyenv` (and more) all in one.
## Table of contents <!-- omit in toc -->
1. [TL;DR](#tldr)
1. [Installation](#installation)
1. [Plugins management](#plugins-management)
1. [Plugins gotchas](#plugins-gotchas)
1. [Versions management](#versions-management)
1. [The `.tool-versions` file](#the-tool-versions-file)
1. [Further readings](#further-readings)
## TL;DR
```sh
# list installed plugins
asdf plugin list
# list available plugins
asdf plugin list all
# install plugins
asdf plugin add helm
# update plugins
asdf plugin update kubectl
asdf plugin update --all
# remove plugins
asdf plugin remove terraform
# list installed versions
asdf list elixir
# list available versions
asdf list all elixir
# install a specific version
asdf install erlang latest
asdf install terraform 1.1.1
# install all versions specified in the '.tool-versions' file
asdf install
# set a specific installed version to use
asdf global helm 3.3 3.2
asdf shell erlang latest
asdf local elixir system
# uninstall a version
asdf uninstall helm 3.3
# show the current status
asdf current
asdf current helm
```
## Installation
```sh
# install the program
brew install asdf
# load its shell file and completion
# or just load oh-my-zsh's plugin
. $(brew --prefix asdf)/asdf.sh
```
## Plugins management
```sh
# list installed plugins
asdf plugin list
asdf plugin list --urls
# list all plugins (available too)
asdf plugin list all
# asdf plugin add $PLUGIN_NAME [$PLUGIN_URL]
asdf plugin add helm
asdf plugin update --all
asdf plugin update $PLUGIN_NAME
asdf plugin remove $PLUGIN_NAME
```
### Plugins gotchas
`asdf plugin list all` or `asdf plugin add $PLUGIN_NAME` also trigger a sync to the plugins repository.
## Versions management
```sh
# list installed versions for a plugin
# asdf list $PLUGIN_NAME
asdf list elixir
# list all available versions for a plugin
# asdf list all $PLUGIN_NAME
asdf list all elixir
# install a plugin version
# asdf install $PLUGIN_NAME $PLUGIN_VERSION
asdf install erlang latest
# check current plugin version
# asdf current [$PLUGIN_NAME]
asdf current
asdf current helm
# set plugin version
# asdf global|shell|local $PLUGIN_NAME $PLUGIN_VERSION [$PLUGIN_VERSION,...]
asdf global helm 3.3 3.2
asdf shell erlang latest
asdf local elixir latest
# fallback to system version
# asdf local $PLUGIN_NAME system
asdf local python system
# uninstall a version
# asdf uninstall $PLUGIN_NAME $PLUGIN_VERSION
asdf uninstall helm 3.3
```
### The `.tool-versions` file
Stores the global (`~/.tool-versions`) or local (`./.tool-versions`) settings for ASDF.
```txt
# Multiple versions can be set by separating them with a space.
# plugin_name default_version first_fallback_version ... nth_fallback_version
python system 3.11.0 3.10.9 3.9.7
```
The versions listed in such file can be:
- an actual version, like `3.10.9`; plugins that support downloading binaries, will download that versions' binaries
- a git reference, like `ref:v1.0.2-a` or `ref:39cb398vb39`; plugins will download the given tag/commit/branch from github and compile the executable file
- a path, like `path:~/src/elixir`; plugins will reference this path to a (custom, compiled) version of the executable
- the `system` keyword; this causes asdf to passthrough to the version of the tool present on the host system and avoid those which are managed by asdf
## Further readings
- the project's [homepage]
- the project's [github] page
- [plugins list]
- [`.tool-versions` example][.tool-versions example]
<!-- project's references -->
[github]: https://github.com/asdf-vm/asdf
[homepage]: https://asdf-vm.com/
[plugins list]: https://github.com/asdf-vm/asdf-plugins
<!-- in-article references -->
<!-- internal references -->
[.tool-versions example]: ../examples/.tool-versions
<!-- external references -->