mu(1) on Linux
The text 090b3d156ff2, as Debian 10 (Buster) shipped it.
a set of tools to deal with Maildirs and message files, in particular to index and search e-mail messages.
Flags it lists
-
--debug -
--help -
--log-stderr -
--muhome -
--quiet -
--version -
-d -
-h -
-q -
-v