Doing a search on MetaCPAN turns up Term::Readline::Zoid::ViCommand. It's "Description" section states:

This mode provides a "vi command mode" as specified by the posix spec for the sh(1) utility. It intends to include at least all key-bindings mentioned by the posix spec for the vi mode in sh(1). It also contains some extensions borrowed from vim(1) and some private extensions.

I'm more familiar with Windows than Linux, so I'm not sure if that matches what you're looking for.