mh-gen.8

<B>Digital的Unix操作系统VAX 4.2源码</B>

BSD42
.br
Use on Berkeley UNIX systems on or after 4.2BSD.

.ti -.5i
BSD43
.br
Use on 4.3 Berkeley UNIX systems.
Also, be sure to use \*(lqoptions BSD42\*(rq.
If \fIopenlog\fR\0(3) (see \*(lqman 3 syslog\*(rq)
takes three arguments instead of two,
and your \fIwrite\fR\0(1) command is set\-group\-id
to group \*(lqtty\*(rq, use this option.
If only one of these conditions is true, you lose.

.ti -.5i
COMPAT
.br
If you previously ran a version of \fIMH\fR earlier than mh.4 use this option.
After a short grace period,
remove it and re-{configure,generate,install} everything.

.ti -.5i
DBM
.br
Use this option if your \fIgetpwent\fR\0(3) routines read a 
dbm database (such as with Yellow Pages) instead of doing
a sequential read of \fB/etc/passwd\fR.
Without DBM the entire passwd file is read into
memory one entry at a time for alias expansion.
This is a performance improvement when reading
a standard \fB/etc/passwd\fR file,
but is \fIvery\fR slow on systems with a dbm database.
At one site that runs
YP on a large passwd file, it showed a 6:1 performance improvement.

.ti -.5i
DPOP
.br
Enables the POP database, useful only if POP service is enabled.

.ti -.5i
DUMB
.br
Directs \fIMH\fR not to try and rewrite addresses to their 
\*(lqofficial\*(rq form.

.ti -.5i
FOLDPROT
.br
Defines the octal value for default folder-protection.
For example, FOLDPROT='\*(lq0700\*(rq'.
The default is \*(lq0711\*(rq.

.ti -.5i
ISI
.br
When using \*(lqrepl\ \-ccme\*(rq,
only \*(lqcc:\*(rq the first address found which belongs to the user;
any other \fIAlternate-Mailboxes\fR do not receive \*(lqcc:\*(rqs.

.ti -.5i
LINK
.br
Defines the filename for alternate file name for \fIdist\fR and \fIrepl\fR.
For example, LINK='\*(lq\\\\043\*(rq' to use the pound\-sign character.
The default is \*(lq@\*(rq.

.ti -.5i
locname
.br
Hard\-wires the local name for the host \fIMH\fR is running on.
For example, locname='\*(lqPICKLE\*(rq'.
It's probably better to either let UNIX tell \fIMH\fR this information,
or to put the information in the host specific \fBmtstailor\fR file.

.ti -.5i
MHE
.br
Enables crude support for Brien Reid's MHE interface.
Recommended for use with the GNU Emacs mh-e package.

.ti -.5i
MHRC
.br
Enables \fIMH\fR to recognize the \fICShell\fR's `~'\-construct.
This is useful for sites that run with a ~/.mhrc for their users.

.ti -.5i
MORE
.br
Defines  the location of the \fImore\fR\0(1) program.
For example, on ALTOS and DUAL systems,
MORE='\*(lq/usr/bin/more\*(rq'.
The default is \*(lq/usr/ucb/more\*(rq.

.ti -.5i
MSGPROT
.br
Defines the octal value for default folder-protection
For example, MSGPROT='\*(lq0600\*(rq'.
The default is \*(lq0644\*(rq.

.ti -.5i
NDIR
.br
For non-Berkeley UNIX systems,
this \fIMH\fR will try to find the new directory access mechanism by looking
in \fB<ndir.h>\fR if this option is given.
Otherwise, \fIMH\fR will try \fB<ndir.h>\fR.
If you still can't get this to work on your system,
edit \fBh/local.h\fR as appropriate.

.ti -.5i
NFS
.br
Tells \fIMH\fR to hack around a problem in the NFS C library.
If you get an undefined symbol \*(lqruserpass\*(rq when compiling
\fIMH\fP, you need this option.

.ti -.5i
NOIOCTLH
.br
Tells \fIMH\fR not to include the file \fB<sys/ioctl.h>\fR.
To be used on systems where this file is not present.

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NOMHSEQ
.br
Directs \fIMH\fR to make private sequences the default.

.ti -.5i
NTOHLSWAP
.br
Tells \fIMH\fR to use the \fBntohl()\fR macro when processing
\fImsh\fR binary map files.  \fIMH\fR can use this macro on
systems with the include file \fBnetinet/in.h\fR,
to byte-swap the binary information in these map files.
If you're using the same map files on machines of different
architectures, enable this option.

.ti -.5i
OVERHEAD
.br
Enable \fIMH\fR commands to read profile/context from open fd:s
without doing an open(); see mh-profile(5) for the details.

.ti -.5i
POP2
.br
Have the POP daemon understand the older
POP2 protocol as well as the \fIMH\fP POP3 protocol \- a major win.
The POP daemon auto-magically
determines which POP protocol your client is using.
If you're enabling POP service,
there's no reason not to enable this option as well.
See also \fIPOPSERVICE\fR.

.ti -.5i
POPSERVICE
.br
The port name the \fIMH\fP POP will use.  For historical reasons,
this defaults to \*(lqpop\*(rq.
In 1987, the \fIMH\fP POP protocol
(POP version 3) was published as RFC1081 and
was assigned its own port number (110),
which differs from the original POP (version 1 and 2) port number (109).
To have \fIMH\fP POP use the new assigned port number, 
set POPSERVICE='\*(lqpop3\*(rq', and be sure that this service
name is listed in your \fB/etc/services\fP file on both POP client
and server hosts as \*(lq110/tcp\*(rq.
If you enable \fIPOP2\fP, you can safely leave this undefined unless
you are using POP3 clients besides \fIMH\fP.

.ti -.5i
RPATHS
.br
Directs \fIinc\fR to note UNIX \*(lqFrom\ \*(rq lines as Return-Path: info.

.ti -.5i
RPOP
.br
Enables the RPOP variant of POP, useful only if POP service is enabled.

.ti -.5i
SBACKUP
.br
Defines the prefix string for backup file names.
For example, SBACKUP='\*(lq\\\\043\*(rq'.
The default is \*(lq,\*(rq.

.ti -.5i
SENDMAILBUG
.br
Causes SMTP reply code 451 (failure)
to be considered the same as code 250 (OK).
Enable this if you know that your SendMail will
return this code even when it doesn't mean to indicate a failure.

.ti -.5i
SHADOW
.br
Indicates that the encrypted passwords can be found in the
\fB/etc/shadow\fR file (and not in the \fB/etc/passwd\fR file).
This option should only be used for some (newer) SYSTEM 5 systems.

.ti -.5i
SOCKETS
.br
Indicates the availability of a socket interface
for TCP/IP networking that is compatible with 4.{2,3}BSD UNIX.
It is not necessary to define this when BSD42 is already defined,
but it might be useful for SYSTEM 5 or HPUX systems with TCP/IP sockets.

.ti -.5i
SUN40
.br
Use on Sun OS 4.0 (and later?) systems.  You probably also want
\*(lqoptions BSD42\*(rq, \*(lqoptions BSD43\*(rq, and
\*(lqoptions TYPESIG=void\*(rq.

.ti -.5i
SYS5
.br
Use on AT&T SYSTEM 5 R3 (and newer?) UNIX systems.  See also \fImailgroup\fR.

.ti -.5i
SYS5DIR
.br
Define this if your system uses \*(lqstruct dirent\*(rq
instead of \*(lqstruct direct\*(rq.
This is true of System V Release 3.0 and later.
Uses include file \fB<dirent.h>\fR
and the routines \fImkdir\fR, \fIrmdir\fR and \fIgetcwd\fR.

.ti -.5i
TTYD
.br
Support for TTYD.  This is no longer in wide use, and is not recommended.

.ti -.5i
TYPESIG
.br
Defines the base type (int or void) of the functions
being parameter/return value of \fIsignal\fR\0(2).
The default is \fBint\fR.
Set TYPESIG='void' on systems which use this type
(e.g., SYSTEM 5 V3.0 and later or Sun OS 4.0).

.ti -.5i
TZNAME
.br
Use time zone names from the \fItzname\fR variable, set via \fItzset\fR.
Only applicable on SYSTEM 5 systems and only effective when you have
asked for alpha\-timezones (see the ATZ option).  See also ZONEINFO.

.ti -.5i
UCI
.br
First, \*(lq_\*(rq and \*(lq#\*(rq are recognized as the prefixes for
scratch files.
Second, support for the UCI group\-leadership mechanism is enabled in
\fIconflict\fR.
Third, the file \fB$HOME/.signature\fR is considered to contain 
a single line of text which is used as the \fIFull Name\fR part
of your \*(lqFrom:\*(rq header.
This may conflict with the interpretation of this file by \fINews\fR.
If you're not at UCI, you probably don't want this option.

.ti -.5i
UK
.br
Directs the \fIscan\fR program to generate UK-style dates.

.ti -.5i
V7
.br
Use on V7 UNIX systems.
Also, be sure to use \*(lqoptions void=int\*(rq.

.ti -.5i
WP
.br
Enables the White Pages service.
Contact [e-mail] for more information.

.ti -.5i
WHATNOW
.br
Enable certain \fIMH\fR commands to act differently when $mhdraft set.

.ti -.5i
ZONEINFO
.br
Specify this if you have a BSD43 based system that keeps time zone
information /etc/zoneinfo or /usr/lib/zoneinfo (SunOS).
With this fix the GMT offset specified in outgoing mail
will be corrected when the TZ enviornment variable is set
to a different time zone.  See also TZNAME.
.in -.5i

.ti -.5i
cc:
.br
The name of your C compiler, if not \*(lqcc\*(rq.

.ti -.5i
ccoptions: \-O
.br
Options given directly to \fIcc\fR\0(1).
The most common is \*(lq\-M\*(rq if you're running \fIMH\fR on an ALTOS.
This defaults to \*(lq\-O\*(rq.  If you define this and want to 
keep \*(lq\-O\*(rq, be sure to include it explicitly.

.ti -.5i
curses: \-lcurses\0\-ltermlib
.br
This should be the loader option required to load the \fItermcap\fR\0(3)
and \fIcurses\fR\0(3) libraries on your system.
On SYS5 systems, it probably should be just \*(lq\-lcurses\*(rq.
Some sites have reported that both \*(lq\-lcurses\*(rq and
\*(lq\-ltermlib\*(rq are necessary.

.ti -.5i
ldoptions:
.br
Options given directly to \fIld\fR\0(1) (via \fIcc\fR\0) at the beginning
of the command line.
Useful for machines which require arguments to tell \fIld\fR to increase the
stack space (e.g. the Gould, which uses \*(lq\-m\08\*(rq).
Usually, \*(lq\-s\*(rq is a good choice in any event.

.ti -.5i
ldoptlibs:
.br
Options given directly to \fIld\fR\0(1) (via \fIcc\fR\0) at the end of the
command line.
The two most common are:
\*(lq\-ldbm\*(rq if you're running MMDF with the \fIdbm\fR package;
and, \*(lq\-lndir\*(rq if you are generating \fIMH\fR on a system
which does not load the new directory access mechanism by default
(e.g., 4.1BSD, SYS5).
If you don't have \fIlibndir\fR on your system,
the sources are in \fBmiscellany/libndir/\fR.

.ti -.5i
lex: lex -nt
.br
Alternative version of \fIlex\fR.  Used in \fBzotnet/tws/\fR.

.ti -.5i
sprintf: int
.br
The return value of the \fIsprintf\fR library routine.
This defaults to \*(lqchar\ *\*(rq.  Set this to \*(lqint\*(rq if
you have an older version of SYSTEM 5 which has this routine return an