The Azure Functions Core Tools provide a local development experience for creating, developing, testing, running, and debugging Azure Functions.
func [--version] [--help] <command> [<args>] [--verbose]
v1 (v1.x branch): Requires .NET 4.7.1 Windows Only
v4: (main branch): Self-contained cross-platform package (recommended)
Version Platform Download Link Notes v4 Windows 64-bit Download VS Code debugging requires 64-bit v4 Windows 32-bit Download v3 Windows 64-bit Download VS Code debugging requires 64-bit v3 Windows 32-bit Download Version Installation Command v4npm i -g azure-functions-core-tools@4
v3 npm i -g azure-functions-core-tools@3 --unsafe-perm true
v2 npm i -g azure-functions-core-tools@2 --unsafe-perm true
Version Installation Command v4 choco install azure-functions-core-tools
v3 choco install azure-functions-core-tools-3
v2 choco install azure-functions-core-tools-2
Note
To debug Azure Functions in VSCode, the 64-bit version is required. This is now the default installation. However, if needed, you can explicitly specify it using the following parameter: --params "'/x64'"
winget install Microsoft.Azure.FunctionsCoreTools
v3 winget install Microsoft.Azure.FunctionsCoreTools -v 3.0.3904
Version Installation Commands v4 brew tap azure/functions
brew install azure-functions-core-tools@4
v3 brew tap azure/functions
brew install azure-functions-core-tools@3
v2 brew tap azure/functions
brew install azure-functions-core-tools@2
Note
Homebrew allows side-by-side installation of v2 and v3. You can switch versions with:
brew link --overwrite azure-functions-core-tools@3
Installation for Linux requires two steps:
wget -q https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
Ubuntu 20.04 wget -q https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
Ubuntu 19.04 wget -q https://packages.microsoft.com/config/ubuntu/19.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
Ubuntu 18.10 wget -q https://packages.microsoft.com/config/ubuntu/18.10/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
Ubuntu 18.04 wget -q https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
Ubuntu 16.04 / Mint 18 wget -q https://packages.microsoft.com/config/ubuntu/16.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
export DEBIAN_VERSION=12 apt-get update && apt-get install gpg wget -y wget -qO- https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | tee /usr/share/keyrings/microsoft-prod.gpg wget -q https://packages.microsoft.com/config/debian/$DEBIAN_VERSION/prod.list mv prod.list /etc/apt/sources.list.d/microsoft-prod.list chown root:root /usr/share/keyrings/microsoft-prod.gpg chown root:root /etc/apt/sources.list.d/microsoft-prod.list apt-get update && apt-get install azure-functions-core-tools-4 -y apt-get update && apt-get install libicu-dev -yVersion Installation Commands v4
sudo apt-get update
sudo apt-get install azure-functions-core-tools-4
v3 sudo apt-get update
sudo apt-get install azure-functions-core-tools-3
v2 sudo apt-get update
sudo apt-get install azure-functions-core-tools-2
npm can be used on all platforms. On unix platforms, you may need to specify --unsafe-perm
if you are running npm with sudo. That's due to npm behavior of post install script.
Alternatively, you can install the CLI manually by downloading the latest release from the GitHub repo:
Download the latest release for your platform from here.
Unzip the CLI package
azure-functions-cli
directory using the unzip
tool, run this command from the directory containing the downloaded release zip:unzip -d azure-functions-cli Azure.Functions.Cli.linux-x64.*.zip
Make the func
command executable
func
binary, as well as gozip
(used by func during packaging) executables. Assuming you used the instructions above to unzip:cd azure-functions-cli chmod +x func chmod +x gozip ./func --version # Test the executable
Optionally add func
to your $PATH
func
command without specifying the full path to the binary, add its directory to your $PATH
environment variable. Assuming you're still following along from above:export PATH=`pwd`:$PATH func
CurrentDirectory
: is the default directory the functions runtime looks for functions in.%TMP%\LogFiles\Application\Functions
: is the default directory for logs. It mirrors the logs directory on Azure as well.The Azure Functions Core tools collect usage data in order to help us improve your experience. The data is anonymous and doesn't include any user specific or personal information. The data is collected by Microsoft.
You can opt-out of telemetry by setting the FUNCTIONS_CORE_TOOLS_TELEMETRY_OPTOUT
environment variable to '1' or 'true' using your favorite shell.
This project is under the benevolent umbrella of the .NET Foundation and is licensed under the MIT License
This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.
For questions on Azure Functions or the tools, you can ask questions here:
File bugs at Azure Functions Core Tools repo on GitHub.
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