Publish and then download a Universal Package

Universal Packages store one or more files together in a single unit that has a name and version. You can publish Universal Packages from the command line by using the Azure CLI.

This quickstart shows you how to publish your first Universal Package by using the CLI, and how to download it by using the CLI. To see your package, you can go to your feed in Azure Artifacts.

Prerequisites

  1. Download and install the latest build of the Azure CLI.
  2. If you're using Linux, ensure you've installed the .NET Core Linux prerequisites.
  3. Install the Azure DevOps extension for the Azure CLI using the command az extension add --name azure-devops

Prepare files for publishing

Create a new directory, and copy the files you want to publish as a package into that directory.

Create a feed

A feed is a container for packages. You consume and publish packages through a particular feed.

If you don't already have an Azure Artifacts feed, create one now and note its name. If you already have a feed, just note the name and Skip to the next step.

  1. Go to Azure Artifacts:

    Go to Azure Artifacts

  2. Select + New feed:

    New feed button

  3. In the dialog box:

    • Give the feed a name.
    • Choose who can read and contribute (or update) packages in your feed.
    • Choose the upstream sources for your feed.
    • When you're done, select Create.

    Most of the default settings work great for most feed users. Making your feed organization visible means you can share a single source of packages across your entire team. Enabling upstream sources to public sources makes it easy to use your favorite OSS packages. Enabling upstream sources can also give you more protection against outages and corrupted or compromised packages.

    New feed dialog box

You can change these settings later by editing the feed. With your feed selected, select Edit feed (the gear icon).

Edit feed button

Log in to Azure DevOps

The following sections vary based on whether you've opted in to the new Azure DevOps Services URLs.

After you've installed the CLI, open your shell of choice (for example, PowerShell or cmd) and browse to the directory that you just created. Then, log in to Azure DevOps by using the following command. Replace the items in square brackets ([]) with appropriate values.

az login

Next, set the organization that you just logged in to as the CLI's default. Again, replace the item in square brackets.

az devops configure --defaults organization=https://dev.azure.com/[your-organization] project=ContosoWebApp

Publish a Universal Package

Publish a package with az artifacts universal publish. The following example publishes a package named my-first-package with version 1.0.0 to the FabrikamFiber feed in the fabrikam organization with a placeholder description.

Update these values as desired, and use the feed name that you noted earlier. Package names must be lowercase and can use only letters, numbers, and dashes (-). Package versions must be lowercase Semantic Versioning (SemVer) 2.0.0 without build metadata (+ suffix).

az artifacts universal publish --organization https://dev.azure.com/fabrikam --feed FabrikamFiber --name my-first-package --version 1.0.0 --description "Your description" --path .

View the package in your feed

To see the package that you just published, go to the organization that you specified in the publish command, select any project, and then select the Artifacts icon on the left side naviation.

Universal Package listing in a sample feed

Download a Universal Package

Now that you've published a package, you can download it to a different directory on your machine. To do that, make a new directory and switch to it. Then, download your package.

The following example downloads a package with the same metadata as the publish example. Update these values to match the values that you selected when you published your package.

az artifacts universal download --organization https://dev.azure.com/fabrikam --feed FabrikamFiber --name my-first-package --version 1.0.0 --path .

Filtered Universal Package downloads

For large Universal Packages, you might want to download a few files instead of the entire package. You can use the --file-filter feature to download a subset of the Universal Package files. The --file-filter command follows the .gitignore syntax. Make sure you have the latest Azure DevOps CLI extension: az extension update -n azure-devops

The following example uses a minimatch pattern to download all .exe's and dll's in your Universal Package. Don't forget to update these values to match the values that you selected when you published your package.

az artifacts universal download --organization https://dev.azure.com/fabrikam --feed FabrikamFiber --name my-first-package --version 1.0.0 --path .  --file-filter **/*.exe;**/*.dll

Downloading the latest version

When downloading a Universal Package, you can use a wildcard expression in the version parameter to download the highest version of a package according to Semantic Versioning precedence rules.

Examples

*: Highest version
1.*: Highest version with major version 1
1.2.*: Highest patch release with major version 1 and minor version 2

Wildcard expressions do not currently support pre-release versions. It is not possible to get the latest pre-release version of a package.

Note that while Semantic Versioning specifies that versions must increase over time, Azure Artifacts does not enforce this rule. As such, the highest matching version that will be downloaded is not necessarily the most recently published version.

Next steps

In this quickstart, you published your first Universal Package and then downloaded back to your machine. To learn more about the Universal Package CLI, append -h to any CLI command. To use Universal Packages in a build, see the Azure Pipelines doc for Universal Packages.