Team Services sprint 101 introduces a new build task, Extract Files.  Use it to easily extract archives during your Team Foundation Server (TFS) build process.  The Extract Files task is cross platform and uses native unzip, tar, and 7-Zip on Mac and Linux.  For Windows, we bundled 7-Zip with the task so you can extract anything supported by 7-Zip, which means you can create tarballs on your on Windows build machines.

The build task is open sourced, so feel free to use it to create your own build extensions. If you have any suggestions or issues, reach out to us on GitHub.