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mail(1)				 User Commands			       mail(1)

NAME
       mail, rmail - read mail or send mail to users

SYNOPSIS
   Sending mail
       mail [-tw] [-m message_type] recipient...

       rmail [-tw] [-m message_type] recipient...

   Reading mail
       mail [-ehpPqr] [-f file]

   Debugging
       mail [-x	debug_level] [other_mail_options] recipient...

DESCRIPTION
       A  recipient  is	 usually  a domain style address ("user@machine") or a
       user name recognized by login(1). When recipients are named,  mail  as-
       sumes  a	 message is being sent.	It reads from the standard input up to
       an end-of-file (Control-d) or, if reading from a	terminal device, until
       it reads	a line consisting of just a period. When either	of those indi-
       cators is received, mail	adds the letter	to the mailfile	for  each  re-
       cipient.

       A letter	is composed of some header lines followed by a blank line fol-
       lowed by	the message content. The header	lines section  of  the	letter
       consists	of one or more UNIX postmarks:

	      From sender date_and_time	[remote	from remote_system_name]

       followed	by one or more standardized message header lines of the	form:

	       keyword-name: [printable	text]

       where  keyword-name is comprised	of any printable, non-whitespace char-
       acters other than colon (`:'). A	Content-Length:	header line,  indicat-
       ing  the	 number	of bytes in the	message	content	will always be present
       unless the letter consists of only header lines with  no	 message  con-
       tent.  A	 Content-Type: header line that	describes the type of the mes-
       sage content (such as text, binary, multipart, and so on) will also  be
       present unless the letter consists of only header lines with no message
       content.	Header lines may be continued on the following	line  if  that
       line starts with	white space.

OPTIONS
   Sending mail
       The following command-line arguments affect sending mail:

       -m message_type
	     A	Message-Type:  line  is	 added	to the message header with the
	     value of message_type.

       -t    A To: line	is added to the	message	header for  each  of  the  in-
	     tended recipients.

       -w    A	letter	is  sent to a remote recipient without waiting for the
	     completion	of the remote transfer program.

       If a letter is found to be undeliverable, it is returned	to the	sender
       with  diagnostics that indicate the location and	nature of the failure.
       If mail is interrupted during input, the	message	is saved in  the  file
       dead.letter  to	allow editing and resending. dead.letter is always ap-
       pended to, thus preserving any previous contents.  The initial  attempt
       to  append to (or create) dead.letter will be in	the current directory.
       If this fails, dead.letter will be appended  to	(or  created  in)  the
       user's  login directory.	If the second attempt also fails, no dead.let-
       ter processing will be done.

       rmail only permits the sending of mail; uucp(1C)	uses rmail as a	 secu-
       rity  precaution.  Any application programs that	generate mail messages
       should be sure to invoke	rmail rather than mail for  message  transport
       and/or delivery.

       If  the local system has	the Basic Networking Utilities installed, mail
       may be sent to a	recipient on a remote system. There are	numerous  ways
       to address mail to recipients on	remote systems depending on the	trans-
       port mechanisms available to the	local system. The two  most  prevalent
       addressing schemes are Domain-style and UUCP-style.

       Domain-style addressing
	     Remote  recipients	 are  specified	by appending an	`@' and	domain
	     (and possibly sub-domain) information to the recipient name (such
	     as	 user@sf.att.com).  (The  local	system administrator should be
	     consulted for details on which addressing conventions are	avail-
	     able on the local system.)

       UUCP-style addressing
	     Remote  recipients	 are specified by prefixing the	recipient name
	     with the remote system name and an	 exclamation  point,  such  as
	     sysa!user.	 If  csh(1) is the default shell, sysa\!user should be
	     used. A series of system names separated  by  exclamation	points
	     can  be used to direct a letter through an	extended network (such
	     as	sysa!sysb!sysc!user or sysa\!sysb\!sysc\!user).

   Reading Mail
       The following command-line arguments affect reading mail:

       -e    Mail is not printed. An exit status of 0 is returned if the  user
	     has mail; otherwise, an exit status of 1 is returned.

       -h    A	window of headers are initially	displayed rather than the lat-
	     est message. The display is followed by the ? prompt.

       -p    All messages are printed without prompting	for disposition.

       -P    All messages are printed with all header lines displayed,	rather
	     than the default selective	header line display.

       -q    mail  terminates  after  interrupts. Normally an interrupt	causes
	     only the termination of the message being printed.

       -r    Messages are printed in first-in, first-out order.

       -f file
	     mail uses file (such as mbox) instead of the default mailfile.

       mail, unless otherwise influenced by command-line arguments,  prints  a
       user's  mail messages in	last-in, first-out order. The default mode for
       printing	messages is to display only those header  lines	 of  immediate
       interest.  These	 include,  but	are  not limited to, the UNIX From and
       >From postmarks,	From:, Date:,  Subject:,  and  Content-Length:	header
       lines,  and  any	 recipient header lines	such as	To:, Cc:, Bcc:,	and so
       forth. After the	header lines have been displayed,  mail	 will  display
       the  contents  (body) of	the message only if it contains	no unprintable
       characters. Otherwise, mail will	issue a	warning	 statement  about  the
       message having binary content and not display the content. (This	may be
       overridden via the p command. See below.)

       For each	message, the user is prompted with a ? and a line is read from
       the  standard  input. The following commands are	available to determine
       the disposition of the message:

       #     Print the number of the current message.

       -     Print previous message.

       <new-line>,+, or	n
	     Print the next message.

       !command
	     Escape to the shell to do command.

       a     Print message that	arrived	during the mail	session.

       d, or dp
	     Delete the	current	message	and print the next message.

       d n   Delete message number n. Do not go	on to next message.

       dq    Delete message and	quit mail.

       h     Display a window of headers around	current	message.

       h n   Display a window of headers around	message	number n.

       h a   Display headers of	all messages in	the user's mailfile.

       h d   Display headers of	messages scheduled for deletion.

       m [ persons ]
	     Mail (and delete) the current message to the named	persons.

       n     Print message number n.

       p     Print current message again, overriding any indications of	binary
	     (that is, unprintable) content.

       P     Override default brief mode and print current message again, dis-
	     playing all header	lines.

       q, or CTRL-D
	     Put undeleted mail	back in	the mailfile and quit mail.

       r [ users ]
	     Reply to the sender, and other users, then	delete the message.

       s [ files ]
	     Save message in the named files (mbox is default) and delete  the
	     message.

       u [ n ]
	     Undelete message number n (default	is last	read).

       w [ files ]
	     Save  message  contents,  without	any header lines, in the named
	     files (mbox is default) and delete	the message.

       x     Put all mail back in the mailfile unchanged and exit mail.

       y [ files ]
	     Same as -w	option.

       ?     Print a command summary.

       When a user logs	in, the	presence of mail, if  any,  is	usually	 indi-
       cated. Also, notification is made if new	mail arrives while using mail.

       The  permissions	 of  mailfile may be manipulated using chmod(1)	in two
       ways to alter the function of mail. The other permissions of  the  file
       may  be	read-write (0666), read-only (0664), or	neither	read nor write
       (0660) to allow different levels	of privacy. If changed to  other  than
       the  default (mode 0660), the file will be preserved even when empty to
       perpetuate the desired permissions.  (The  administrator	 may  override
       this  file  preservation	 using the DEL_EMPTY_MAILFILE option of	mailc-
       nfg.)

       The group ID of the mailfile must be mail to allow new messages	to  be
       delivered, and the mailfile must	be writable by group mail.

   Debugging
       The  following  command-line  arguments cause mail to provide debugging
       information:

       -x debug_level
	     mail creates a trace file containing debugging information.

       The -x option causes mail to create a file  named  /tmp/MLDBGprocess_id
       that  contains debugging	information relating to	how mail processed the
       current message.	The absolute value of debug_level  controls  the  ver-
       boseness	 of  the  debug	 information.  0  implies no debugging.	If de-
       bug_level is greater than 0, the	debug file will	be  retained  only  if
       mail  encountered  some	problem	 while	processing the message.	If de-
       bug_level is less than 0, the debug file	will always be	retained.  The
       debug_level  specified  via  -x overrides any specification of DEBUG in
       /etc/mail/mailcnfg. The information provided by the -x option  is  eso-
       teric and is probably only useful to system administrators.

   Delivery Notification
       Several	forms  of notification are available for mail by including one
       of the following	lines in the message header.

       Transport-Options: [ /options ]

       Default-Options:	[ /options ]

       >To: recipient [	/options ]

       Where the "/options" may	be one or more of the following:

       /delivery
	     Inform the	sender that the	message	was successfully delivered  to
	     the recipient's mailbox.

       /nodelivery
	     Do	not inform the sender of successful deliveries.

       /ignore
	     Do	not inform the sender of failed	deliveries.

       /return
	     Inform  the sender	if mail	delivery fails.	Return the failed mes-
	     sage to the sender.

       /report
	     Same as /return except that the original message is not returned.

       The default is /nodelivery/return. If contradictory options  are	 used,
       the  first will be recognized and later,	conflicting, terms will	be ig-
       nored.

OPERANDS
       The following operand is	supported for sending mail:

       recipient
	     A domain style address ("user@machine") or	user login name	recog-
	     nized by login(1).

USAGE
       See  largefile(5) for the description of	the behavior of	mail and rmail
       when encountering files greater than or equal  to  2  Gbyte  (  2 **31
       bytes).

ENVIRONMENT VARIABLES
       See  environ(5) for descriptions	of the following environment variables
       that affect the execution of mail: LC_CTYPE, LC_MESSAGES, and NLSPATH.

       TZ    Determine the timezone used with date and time strings.

EXIT STATUS
       The following exit values are returned:

       0     Successful	completion when	the user had mail.

       1     The user had no mail or an	initialization error occurred.

       >1    An	error occurred after initialization.

FILES
       dead.letter
	     unmailable	text

       /etc/passwd
	     to	identify sender	and locate recipients

       $HOME/mbox
	     saved mail

       $MAIL variable containing path name of mailfile

       /tmp/ma*
	     temporary file

       /tmp/MLDBG*
	     debug trace file

       /var/mail/*.lock
	     lock for mail directory

       /var/mail/:saved
	     directory for holding temp	files to prevent loss of data  in  the
	     event of a	system crash

       /var/mail/user
	     incoming mail for user; that is, the mailfile

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       chmod(1),  csh(1),  login(1),  mailx(1),	 uucp(1C), uuencode(1C), vaca-
       tion(1),	write(1), attributes(5), environ(5), largefile(5)

       Solaris Advanced	User's Guide

NOTES
       The interpretation and resulting	action taken  because  of  the	header
       lines  described	 in the	Delivery Notifications section above will only
       occur if	this version of	mail is	installed on the system	where the  de-
       livery  (or  failure) happens. Earlier versions of mail may not support
       any types of delivery notification.

       Conditions sometimes result in a	failure	to remove a lock file.

       After an	interrupt, the next message may	not be printed;	 printing  may
       be forced by typing a p.

SunOS 5.9			  10 Mar 2000			       mail(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | USAGE | ENVIRONMENT VARIABLES | EXIT STATUS | FILES | ATTRIBUTES | SEE ALSO | NOTES

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