git-annex-required man page
git-annex-required — get or set required content expression
git annex required repository [expression]
When run with an expression, configures the content that is required to be held in the archive.
git annex required . "include=*.mp3 or include=*.ogg"
Without an expression, displays the current required content setting of the repository.
While git-annex-wanted(1) is just a preference, this designates content that should really not be removed. For example a file that is wanted can be removed with git annex drop, but if that file is required, it would need to be removed with git annex drop --force.
Also, git-annex fsck will warn about required contents that are not present.
The required command was added in git-annex 5.20150420.
Joey Hess <email@example.com>