beginners.tex

早期freebsd实现

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%$Id: beginners.tex,v 1.2 1992/02/13 18:34:49 jromine Exp $

\def\oneline#1{\par\bigskip\leftline{\tt\hskip.75in#1}}
\def\command#1{\par\bigskip\leftline{\tt\hskip.75in\% #1}}
\def\comarg#1#2{\par\bigskip\leftline{\tt\hskip.75in\% #1 {\it#2}}}
\def\MH/{{\sf MH}}
\def\MM/{{\sc mm}}
\def\unix/{{\sc Unix}}
\newfont{\itt}{cmti10}
\begin{document}

\title{MH for Beginners}
\author{Mary Hegardt \and Tim Morgan}
\maketitle

This document is intended to be an introduction for new users to the
\MH/ mail system. For more detailed information, users will want to
read the document called {\sl The Rand MH Message Handling System:
User's Manual\/} by Marshall~T. Rose and John~L. Romine. It is available
for Xeroxing in suite CS408.
\footnote{This document is specific to the environment
at the ICS department of U.~C.~Irvine.  For a more general document,
see {\sl The Rand MH Message Handling System: Tutorial\/}.}

\section{Using Electronic Mail}

Electronic mail (e-mail) is a quick, convenient way to send a message
to another person (or persons).  The message recipient can read and
reply to the message at his convenience. E-mail is much faster than
a paper memo and avoids inconveniences associated with the telephone
such as unwanted interruptions and ``phone tag.''

At UCI, one can send e-mail to people within the ICS department, people
in other units on campus, and to people at some other institutions
off campus (usually other universities).

An electronic mail message consists of two parts: the headers and the
body.  The body comes after the headers and consists of the ``message'':
whatever the sender types in. The headers are the lines at the top
of the message including the subject and addresses of the people
to whom the message is addressed.  It is similar to the top lines
of a memo: {\tt To:}, {\tt From:}, {\tt Subject:}, and so on.  The headers
are separated from the body by a blank line. As in memos, the people
listed in the {\tt Cc:}\ field are not intended to be the primary recipients 
of the message. The message is for their information only, and they
are not expected to reply.


E-mail is also useful for discussions among groups of people.  This
``bboards'' (electronic bulletin boards) facility will be discussed later.

An electronic mail address looks like ``{\it name\/}{\tt@}{\it site\/}''.
The {\it name\/} is
a person's ``mail handle'' --- usually his first initial followed by his
last name.   For example, Mary Hegardt's mail handle is ``mhegardt''.
The {\it site\/} is the system where the addressee receives mail.  Within
the ICS Department, you need only know the person's mail handle;
the mail system will automatically fill in the ``{\tt @}{\it site\/}'' part.

\section{Why MH ?}

The \MH/ system is very different from most mail user agents.  Instead of 
running one large program which handles all mail functions and keeps
messages in one large file, \MH/ is a collection of smaller 
single-purpose programs used to manipulate mail messages
which are kept in individual files.  \MH/ may seem to be more complicated
or harder to use than other mail systems (MM, for example), but  
\MH/ has been designed to allow
you to take full advantage of existing {\sc Unix}\footnote{{\sc Unix} is 
a trademark of AT\&T Bell Laboratories} commands and programs
in connection with mail messages.
For example, you can use your usual text editor, spelling program, and
printer commands on individual messages.  


\section{The Basics}

The first time you use an \MH/ command (probably {\it inc\/}), 
\MH/ will create a directory called ``Mail'' in your home (login) directory. All
your mail will be stored in directories beneath this one.  It will also
create a file in your home directory called \verb|.mh_profile|.  It is
a file that allows you to tailor your \MH/ environment.  We'll discuss
this more later.  


\subsection{Reading Mail}

When someone sends a mail message to you, it is delivered to a file
called your ``mail drop'' file.  When you are ready to read your mail,
you have to incorporate (or ``inc'') your mail messages from the mail
drop area into your account.

Everytime you log in to your {\sc Unix} account, you will be told if you
have new mail messages.  When you are ready to read them, type \verb|inc|.
The {\it inc\/} program will copy your mail into your ``inbox'' and generate
a ``scan'' listing of the new messages. For example,

\begin{scriptsize}
\begin{verbatim}
4.2 BSD UNIX #116: Mon Jul 15 14:03:21 PDT 1985
You have new ZOTnet mail, type "inc" (or mail)

TERM = (dm1520)

% inc

Incorporating new mail into inbox ...
 
   1+ 10/29 1732-PST Tim Morgan        new bboard!  <<Please add us to the uni
   2  11/12 0016-PST ROODE@uci-20b     CP6 from the 20s  <<What is (will be) t
   4  11/15 1909-EDT tts@tts           Hello, got a few questions
   5  11/15 2134-PST Marshall Rose     MH.6 on 750a  <<Mary, I've left the dis
   6  11/16 0808-PST Mail Delivery Su  Returned mail: Host unknown
   7  11/16 1021-PST Tim Morgan        Unix-wizards/info-unix move
   8  11/18 0952-PST [e-mail]  Re:New system wide aliases for ICS facu
   9  11/18 1346-EDT tts@tts           Have we got a problem?
\end{verbatim}
\end{scriptsize}

This is what a typical ``inc'' session for the Postmaster looks like.  
{\it Inc\/} copies my mail into my ``inbox'' folder, assigns a unique number to
each message, and scans them for me.  The numbers allow you to refer
to each message individually.  After the message number, you see the
date and time the message was sent, the name of the sender, and the
subject of the message. The ``current'' message is indicated by a 
``{\tt +}'' sign. To read it, type ``{\tt show}'':

\begin{scriptsize}
\begin{verbatim}
% show

   (Message inbox:1)
   Received: from localhost by UCI.EDU id a005369; 29 Oct 85 17:32 PST
   To: [e-mail]
   Subject: new bboard!
   Date: 29 Oct 85 17:32:24 PST (Tue)
   From: Tim Morgan <[e-mail]>
   
   Please add us to the unix-sw list.  Also, if RAJ hasn't mentioned it,
   and if it still exists, we should get on the Astronomy bboard.

   Tim
\end{verbatim}
\end{scriptsize}

If the message is
longer than one screenful, you will see the word ``more'' at the bottom
of the screen.  When you are ready to see ``more'' of the message,
press the \fbox{space bar} to see another screenful, or press the 
\fbox{return} key to see just one more line.

To see the next message, you could type a couple of different commands:


\oneline{\% next}
or
\oneline{\% show next}
or
\oneline{\% show 2}

All of these commands would have the same effect: to type out the next message
in the list.  The most efficient thing to do is to type ``{\tt next}''.  When
You do that, message number 2 will be shown and become the ``current message''.

\begin{footnotesize}
\begin{verbatim}
% next

(Message inbox:2)
Received: from UCI-20B by UCI-ICSA id aa01222; 12 Nov 85 0:23 PST
Date: 12 Nov 1985 0016-PST
From: ROODE@uci-20b
Subject: CP6 from the 20s
To: zotnet@uci-20b
cc: [e-mail]

What is (will be) the prescribed method of addressing for sending
CP6 mail from the 20s?  They dont seem to know about @CF, @UCICP6,
but "Name_Name%UCICP6"@ICSA seems to fly.

	dana
\end{verbatim}
\end{footnotesize}

\subsection{Selecting Messages}

As you have seen, messages can be referred to by their message numbers.
Some \MH/ commands, such as {\it show,} can act upon more than one
message at a time. A range of messages can be specified using the
form ``{\it name1-name2\/}'' where {\it name\/} is a message number or
one of the reserved message names described below:

\bigskip

\def\titem[#1]{\par\noindent\hbox to .5in{\hfil\it #1\/}\qquad}

\titem[cur] The current message (the last one that was handled)
\titem[next] The next message (same as ${\it cur\/} + 1$)
\titem[prev] The previous message (${\it cur\/} - 1$)
\titem[first] The first message in the current folder
\titem[last] The last message in the folder
\titem[all] All messages ($\it first-last$)

\bigskip

If you do not name a specific message, the command will act upon
the ``current message''.

\subsection{Sending Messages}

A mail message consists of two parts: the headers and the body.  The
headers are the lines at the top of the message that say ``{\tt To:}''
and so on.  The body is the actual text of the message (what you
want to say).  To send someone a message, you start with the
{\it comp\/} command.  This will start up an editor called {\it prompter\/}
that will prompt you to fill in the headers. You should type the
requested information for that header or a \fbox{return} to omit it.  
You should end the message by typing control-D (press down the key
marked \fbox{ctrl} and strike the D key) at the beginning of a new
line.  Here's an example:

\begin{verbatim}
	% comp
	To: morgan, raj
	Cc: 
	Subject: Lunch
	---------
	Where are we going for lunch today ?  

	Mary
	<control-D>
	--------
	What now ?  send
\end{verbatim}

At the ``\verb|What now ?|'' prompt you can type a {\tt?} to see 
what commands you can type next.
One of the most useful options at this point is to edit the draft
of the message to correct any mistakes.  To do this you type:

\oneline{What now ?  edit vi}

This will put you in the {\it vi\/} editor to edit the message.  If you use
{\it emacs\/} or any other editor, just type ``edit emacs'' or whatever.
When you have finished editing, just exit the editor as you would 
normally.  You will then get another ``\verb|What now ?|'' prompt. Here are some
of the ``What now'' options:

\bigskip

\begingroup
\def\titem[#1]{\par\hangafter=1\hangindent=1.4in\noindent
	\hbox to\hangindent{\hfil#1\qquad}\ignorespaces}

\titem[\tt edit \it editor\/] Edit the message using the specified
				editor.  When you exit, you will be
				back at \verb|What now|.

\titem[\tt list] Shows the message you just typed

\titem[\tt whom -check] Verifies that the addresses you have
				used are valid as far as our system
				can tell

\titem[\tt send] Sends the message to the recipients

\titem[\tt push] Sends the message in the background

\titem[\tt quit] Quits without sending the message.
				Saves the text of the message as
				a ``draft''. Type \verb|comp -use| to
				get back to that draft later.

\titem[\tt quit -delete] Quit, throwing away the draft
\endgroup

\bigskip

Make sure you are happy with your message before typing \verb|send|.  There
is no way to recall a message once it has been sent.

\subsection{Replying to Messages}

To reply to the current message type {\it repl.}  When you do this, 
the reply headers will be printed out and you will be put in the prompter
editor to type in your reply text. When you are replying  to a message,
the name of the sender of the original message will appear in the
``To:'' field.  Any people on the ``To:'' or ``Cc:'' lists will also
be copied on your reply message. As with {\it comp,} when you have
finished, type control-D and \verb|send| (or whatever) at \verb|What now ?|.

\subsection{Forwarding Messages}

If you receive a particularly interesting message and can't resist
sharing it with others, you can forward it using the {\it forw\/}
command.  You will be prompted to fill in the headers (the address
to which the message is to be forwarded, etc.). When you have done this,
you will see the text of the message which you are forwarding and will be
given the opportunity to add some enlightening text to the message.
Exit with control-D and do whatever feels good at the \verb|What now ?|
prompt.

\subsection{The Advanced Features}

You will probably want to master the beginning \MH/ concepts before you