ref: 5bc9b0c3cac34864d479c099283793ec4ae5565e
dir: /sys/man/6/mdir/
.TH MDIR 6 .SH NAME mdir \- mail directory format .SH SYNOPSIS The .I mdir format is used by Upas as a replacement for tradition mailbox format. An .I mdir mailbox is a directory containing any number of messages stored one message per file. Individual messages are stored in the same format they would be in a traditional mailbox; each message is a valid mailbox with a single message. The message files are named with the UNIX seconds corresponding to the date on the .LR From line, a “.” separator and a two digit sequence starting with .LR 00 . .PP One .I mdir may contain other .I mdirs but (currently) this relationship is in name only. The mail box .B /mail/box/\f2a\f5 does not contain any messages from .BR /mail/box/\f2a\f5/\f2b\f5 , according to .IR upasfs (4). .SH "SEE ALSO" .IR splitmbox (8), .IR upasfs (4)