mu-index(1) on Linux
The text 2f2d29e20017, as Debian 10 (Buster), Debian 9 (Stretch) shipped it.
index e-mail messages stored in Maildirs
Flags it lists
-
--autoupgrade -
--lazy-check -
--maildir -
--my-address -
--nocleanup -
--rebuild -
-m