mu(1) on Linux
The text b8f2042b65d4, as Debian 9 (Stretch) 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