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oam/knowledge base/asdf.md

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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

  1. TL;DR
  2. Installation
  3. Plugins management
    1. Plugins gotchas
  4. Versions management
    1. The .tool-versions file
  5. Further readings

TL;DR

# 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

# 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

# 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

# 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.

# 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