# Common Engineering System The `eng/common` directory contains engineering files that are common across the various azure-sdk language repos. It should remain relatively small and only contain textual based files like scripts, configs, or templates. It should not contain binary files as they don't play well with git. # Updating Any updates to files in the `eng/common` directory should be made in the [azure-sdk-tools](https://github.com/azure/azure-sdk-tools) repo. All changes made will cause a PR to created in all subscribed azure-sdk language repos which will blindly replace all contents of the `eng/common` directory in that repo. For that reason do **NOT** make changes to files in this directory in the individual azure-sdk languages repos as they will be overwritten the next time an update is taken from the common azure-sdk-tools repo.