.TH MAIL 1
.SH NAME
mail, go.fishing \- mail and mailboxes
.SH SYNOPSIS
.B mail
[
.I arg ...
]
.PP
.B go.fishing
.SH DESCRIPTION
.PP
Mail is a shell script that invokes
.IR nedmail (1),
the mail reader,
when no recipients appear on the command line and
.IR marshal (1),
the mail preparer,
otherwise.
All command line options are passed through.
See the man pages for those two commands for
more details.
.PP
Incoming mail for a user
.I username
is put in the file
.BI /mail/box/ username /mbox
unless either the file
.BI /mail/box/ username /forward
or
.BI /mail/box/ username /pipeto
exists.
The mailbox must have append-only and exclusive-access mode
(see
.IR chmod (1)).
A user must create his or her own mailbox using the
.B -c
option of
.IR nedmail (1).
Mailboxes are created writable (append-only) but not readable by others.
.PP
If the file
.BI /mail/box/ username /forward
exists and is readable by everyone, incoming mail
will be forwarded to the addresses contained in the first line of the file.
The file may contain multiple addresses.
Forwarding loops are caught and resolved by local delivery.
.PP
If the file
.BI /mail/box/ username /pipeto
exists and is readable and executable by everyone,
it will be run for each incoming message for the user.
The message will be piped to it rather
than appended to his/her mail box.
The file is run as user
.BR none .
Its two arguments are the 
with arguments of the destination address
(e.g.,
.BR local!gremlin )
and the user's mail box path
(e.g.,
.BR /mail/box/gremlin/mbox )
.SS Auto-answer
.PP
To use 
.I mail
as an answering machine while you are away,
run
.IR go.fishing ,
which will create
.B /mail/box/$user/gone.fishing
as a flag for
.B pipeto
processing,
and truncate
.BR /mail/box/$user/gone.addrs .
Any existing
.B pipeto
file that uses
.B /mail/lib/pipeto.lib
will invoke the
.I gone.fishing
machinery when it calls
.B spool
or
.BR spool-tagged-spam .
.PP
If
.B /mail/box/$user/gone.msg
exists, it
will be sent (just once) to everyone who
sends you mail that lists your address in a
.L To
or
.L Cc
header;
if not,
.B /mail/lib/gone.msg
will be sent.
Upon your return, remove
.B /mail/box/$user/gone.fishing
to stop automatic responses.
.SH FILES
.TF /mail/box/$user/gone.fishing
.TP
.B /sys/log/mail
mail log file
.TP
.B /mail/box/*
mail directories
.TP
.B /mail/box/*/mbox
mailbox files
.TP
.B /mail/box/*/forward
forwarding address(es)
.TP
.B /mail/box/*/pipeto
mail filter
.TP
.B /mail/box/*/L.reading
mutual exclusion lock for multiple mbox readers
.TP
.B /mail/box/*/L.mbox
mutual exclusion lock for altering mbox
.TP
.B /lib/face/48x48x?
directories of icons for
.I seemail
.TP
.B /mail/lib/pipeto.lib
helper functions for pipeto files
.TP
.B /mail/lib/gone.msg
default vacation message
.TP
.B /mail/lib/gone.fishing
auto-responder as
.I pipeto
script
.TP
.B /mail/box/$user/gone.fishing
flag to active gone processing
.TP
.B /mail/box/$user/gone.addrs
list of senders answered by
.I gone.fishing
.SH SOURCE
.B /rc/bin/mail
.br
.B /rc/bin/go.fishing
.SH "SEE ALSO"
.IR aliasmail (8),
.IR faces (1),
.IR filter (1),
.IR marshal (1),
.IR mlmgr (1),
.IR nedmail (1),
.IR qer (8),
.IR rewrite (6),
.IR send (8),
.IR smtp (8),
.IR upasfs (4)