mailcheck(1) on Linux
The text 4d136bd24cae, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
Check multiple mailboxes and/or Maildirs for new mail
Flags it lists
-
-b -
-c -
-f -
-h -
-l -
-s