scripts: new maintainer script validate-minimum-dependency-versions Automate what we can. This script could be added later to an encompassing script 'prepare-for-release' (which would also do other release-related steps). The trick '2> >(tee "$log" >&2)' sends the error output to the console while at the same time writing to a file. It uses bash-specific syntax (process substitution: >(...) ) See https://stackoverflow.com/a/692407/2941347 . Includes contributions by Mads Kiilerich.