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 mailx(1)							    mailx(1)




 NAME
      mailx - interactive message processing system

 SYNOPSIS
    Send mode:
      mailx [-FUm] [-s subject] [-r address] [-h number] address ...

    Receive mode:
      mailx -e

      mailx [-UHLiNn] [-u user]

      mailx -f [-UHLiNn] [filename]

    Obsolescent:
      mailx [-f filename] [-UHLiNn]

 DESCRIPTION
      mailx provides a comfortable, flexible environment for sending and
      receiving messages electronically.  When reading mail, mailx provides
      commands to facilitate saving, deleting, and responding to messages.
      When sending mail, mailx allows editing, reviewing and other
      modification of the message as it is created.

      Incoming mail for each user is stored in a standard file called the
      system mailbox for that user.  When using mailx to read messages, the
      system mailbox is used unless an alternate mailbox file is specified
      by using the -f option with or without a specific filename.  As
      incoming messages are read from the system mailbox, they are marked to
      be moved to a secondary file for storage (unless specific action is
      taken) so that the messages need not be seen again.  This secondary
      file is called the mbox and is usually located in the user's HOME
      directory (see MBOX description under ENVIRONMENT VARIABLES below for
      a description of this file and other environment variables used by
      mailx).  Messages remain in this file until specifically removed.

      Command-line options start with a hyphen (-), and any other arguments
      are assumed to be destinations (recipients).  If no recipients are
      specified, mailx attempts to read messages from the system mailbox.

      Recipient addresses specified on the command line must total less than
      1024 characters in length.  You may declare an alias or group (see
      COMMANDS below) to specify a recipient address or list of addresses of
      up to 8191 characters, and use that alias or group name (though each
      address in the list must still be less than 1024 characters).  If you
      wish to specify a list of recipient addresses of greater length than
      this, have your system administrator declare an alias or group in the
      system alias file /etc/mail/aliases and use that alias name instead.

    Options
      mailx recognizes the following command-line options:



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 mailx(1)							    mailx(1)




	   -e		  Test for presence of mail.  mailx prints nothing
			  and exits with a successful return code if there
			  is mail to read.  Sometimes used in login scripts
			  such as $HOME/.profile to check for mail during
			  login.

	   -f		  Read messages from filename instead of the user's
			  system mailbox.  If filename is not specified, the
			  secondary mbox is used.

	   -F		  Record the message in a file named after the first
			  recipient.  Overrides the record environment
			  variable, if set.

	   -h number	  The number of network "hops" made so far.  This is
			  provided for network software to prevent infinite
			  delivery loops.

	   -H		  Print header summary only.

	   -L		  Print complete header information only.

	   -i		  Ignore interrupts.  Also see the description of
			  the ignore environment below.

	   -n		  Do not initialize from the system default mailx.rc
			  file.

	   -m		  Do not add MIME header lines Mime Version, Content
			  Type & Content Encoding to the header information
			  while sending mails.

	   -N		  Do not print initial header summary.

	   -r address	  Pass address to network delivery software.  All
			  tilde commands are disabled.

	   -s subject	  Set the Subject header field to subject.

	   -u user	  Read user's mailbox.	Can be used only if read
			  access to user's mailbox is not read protected.

	   -U		  Convert UUCP-style addresses to Internet
			  standards.  Overrides the conv environment
			  variable.

	   -d		  Turn on debugging output.  Neither particularly
			  interesting nor recommended.

      When reading mail, mailx operates in command mode.  A header summary
      of the first several messages is displayed, followed by a prompt



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 mailx(1)							    mailx(1)




      indicating that mailx can accept regular commands (see COMMANDS
      below).  When sending mail, mailx operates in input mode.	 If no
      subject is specified on the command line, a prompt for the subject is
      printed.	As the message is typed, mailx reads the message and stores
      it in a temporary file.  Commands can be entered by beginning a line
      with the tilde (~) escape character followed by a single command
      letter and optional arguments.  See TILDE ESCAPES for a summary of
      these commands.

      The behavior of mailx at any given time is governed by a set of
      environment variables; flags and valued parameters that are set and
      cleared by using the set and unset commands.  See ENVIRONMENT
      VARIABLES below for a summary of these parameters.

      Recipients listed on the command line can be of three types: login
      names, shell commands, or alias groups.  Login names can be any
      network address, including mixed network addressing.  If the recipient
      name begins with a pipe symbol (|), the rest of the name is assumed to
      be a shell command to pipe the message through.  This provides an
      automatic interface with any program that reads the standard input,
      such as lp (see lp(1)) for recording outgoing mail on paper.  Alias
      groups are set by the alias command (see COMMANDS below) and are lists
      of recipients of any type.

      Regular commands are of the form

	   [command] [msglist ] [ arguments ]

      If no command is specified in command mode, print is assumed.  In
      input mode, commands are recognized by the escape character (tilde
      unless redefined by the escape environment variable), and lines not
      treated as commands are treated as input for the message.

      Each message is assigned a sequential number, and there is always the
      notion of a current message, marked by a >&gt&gt> in the header summary.
      Many commands take an optional list of messages (msglist) to operate
      on, which defaults to the current message.  A msglist is a list of
      message specifications separated by spaces.  The message list can
      include:

	   n	     Message number n.

	   .	     The current message.

	   ^	     The first undeleted message.

	   $	     The last message.

	   *	     All messages.





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 mailx(1)							    mailx(1)




	   n-m	     An inclusive range of message numbers, n through m,
		     where n is less than m.

	   user	     All messages from user.

	   /string   All messages with string in the subject line
		     (uppercase-lowercase differences are ignored).

	   :c	     All messages of type c, where c is one of:

			  d    deleted messages

			  n    new messages

			  o    old messages

			  r    read messages

			  u    unread messages

		     Note that the context of the command determines whether
		     this type of message specification makes sense.

      Other arguments are usually arbitrary strings whose usage depends on
      the command involved.  File names, where expected, are expanded using
      normal shell conventions (see sh(1)).  Special characters are
      recognized by certain commands, and are documented with the commands
      below.

      At start-up time, mailx reads commands from a system-wide file
      (/usr/share/lib/mailx.rc) to initialize certain parameters, then from
      a private start-up file ($HOME/.mailrc) for personalized variables.
      Most regular commands are legal inside start-up files, the most common
      use being to set up initial display options and alias lists.  The
      following commands are not legal in the start-up file: !, Copy, edit,
      followup, Followup, hold, mail, preserve, reply, Reply, shell, and
      visual.  Any errors in the start-up file cause the remaining lines in
      the file to be ignored.

 COMMANDS
      The following is a complete list of mailx commands:

      ! command		  Escape to the shell.	See the description of the
			  SHELL environment variable below.

      # comment		  Null command (comment).  Useful in .mailrc files.

      =			  Print the current message number.

      ?			  Print a summary of commands.




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 mailx(1)							    mailx(1)




      <new-line>	  Advance to next message and print.  If this is the
			  first command entered, the first unread message is
			  printed.  (To read the current message, use
			  print.)

      alias alias name...
      group alias name... Declare an alias for the given names.	 The names
			  are substituted when alias is used as a recipient.
			  Useful in the .mailrc file.

      alternates name...  Declares a list of alternate names for your login.
			  When responding to a message, these names are
			  removed from the list of recipients for the
			  response.  With no arguments, alternates prints
			  the current list of alternate names.	See also
			  allnet under ENVIRONMENT VARIABLES.

      cd [directory]
      chdir [directory]	  Change directory.  If directory is not specified,
			  $HOME is used.

      copy [filename]
      copy [msglist] filename
			  Copy messages to the file without marking the
			  messages as saved.  Otherwise equivalent to the
			  save command.

      Copy [msglist]	  Save the specified messages in a file whose name
			  is derived from the author of the message to be
			  saved, without marking the messages as saved.
			  Otherwise equivalent to the Save command.

      delete [msglist]	  Delete messages from the mailbox.  If autoprint is
			  set, the next message after the last one deleted
			  is printed (see ENVIRONMENT VARIABLES).  See also
			  dp.

      discard [header-field ...]
      ignore [header-field ...]
			  Suppresses printing of the specified header fields
			  when displaying messages on the screen.  Examples
			  of header fields to ignore are "status" and "cc."
			  The fields are included when the message is saved.
			  The Print and Type commands override this command.

      dp[msglist]
      dt[msglist]	  Delete the specified messages from the mailbox and
			  print the next message after the last one deleted.
			  Roughly equivalent to a delete command followed by
			  a print command.




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 mailx(1)							    mailx(1)




      echo string ...	  Echo the given string or strings (similar to echo
			  - see echo(1)).

      edit [msglist]	  Edit the given messages.  The messages are placed
			  in a temporary file and the EDITOR variable is
			  used to get the name of the editor (see
			  ENVIRONMENT VARIABLES).  Default editor is ed (see
			  ed(1)).

      exit

      xit		  Exit from mailx, without changing the mailbox.  No
			  messages are saved in the mbox (see also quit).

      file [filename]
      folder [filename]	  Quit from the current file of messages and read in
			  the specified file.  Several special characters
			  are recognized when used as file names, and
			  substitutions are made as follows:

			  %	    the current mailbox.
			  %user	    the mailbox for user.
			  #	    the previous file.
			  &&amp&amp&amp;	    the current mbox.

			  Default file is the current mailbox.

      folders		  Print the names of the files in the directory set
			  by the folder variable (see ENVIRONMENT VARIABLES
			  ).

      followup [message]  Respond to a message and record the response in a
			  file whose name is derived from the author of the
			  message.  Overrides the record variable, if set.
			  See also the Followup, Save, and Copy commands and
			  outfolder (see ENVIRONMENT VARIABLES).

      Followup [msglist]  Respond to the first message in the msglist,
			  sending the message to the author of each message
			  in the msglist.  The subject line is extracted
			  from the first message and the response is
			  recorded in a file whose name is derived from the
			  author of the first message.	See also the
			  followup, Save, and Copy commands and outfolder
			  (see ENVIRONMENT VARIABLES).

      from [msglist]	  Print the header summary for the specified
			  messages.

      group alias name...




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 mailx(1)							    mailx(1)




      alias alias name... Declare an alias for the given names.	 The names
			  are substituted when alias is used as a recipient.
			  Useful in the .mailrc file.

      headers [message]	  Prints the page of headers which includes the
			  message specified.  The screen variable sets the
			  number of headers per page (see ENVIRONMENT
			  VARIABLES).  See also the z command.

      help		  Prints a summary of commands.

      hold [msglist]
      preserve [msglist]  Holds the specified messages in the mailbox.

      if s|r
	mail-commands
      else
	mail-commands
      endif		  Conditional execution, where s executes the
			  accompanying mail-commands, up to an else or endif
			  if the program is in send mode, and r causes the
			  accompanying mail-commands to be executed only in
			  receive mode.	 Intended for use in .mailrc files.
      ignore header-field ...
      discard header-field ...
			  Suppresses printing of the specified header fields
			  when displaying messages on the screen.  Examples
			  of header fields to ignore are status and cc.	 All
			  fields are included when the message is saved.
			  The Print and Type commands override this command.

      list		  Prints all commands available.  No explanation is
			  given.

      mail name ...	  Mail a message to the specified users.

      mbox [msglist]	  Arrange for the given messages to end up in the
			  standard mbox save file when mailx terminates
			  normally.  See MBOX description under ENVIRONMENT
			  VARIABLES for a description of this file.  See
			  also the exit and quit commands.

      next [message]	  Go to next message matching message.	A msglist
			  can be specified, but in this case the first valid
			  message in the list is the only one used.  This is
			  useful for jumping to the next message from a
			  specific user since the name would be interpreted
			  as a command in the absence of a real command.
			  See the discussion of msglists above for a
			  description of possible message specifications.




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 mailx(1)							    mailx(1)




      pipe [msglist] [command]
      | [msglist] [command]
			  Pipe messages in msglist through the specified
			  command.  Each message is treated as if it were
			  read.	 If msglist is not specified, the current
			  message is used.  If command is not specified, the
			  command specified by the current value of the cmd
			  variable is used.  If msglist is specified,
			  command must also be specified.  If the page
			  variable is set, a form feed character is inserted
			  after each message (see ENVIRONMENT VARIABLES).

      preserve [msglist]
      hold [msglist]	  Preserve the specified messages in the mailbox.

      Print [msglist]
      Type [msglist]	  Print the specified messages on the screen,
			  including all header fields.	Overrides
			  suppression of fields by the ignore command.
      print [msglist]
      type [msglist]	  Print the specified messages.	 If crt is set,
			  messages longer than the number of lines specified
			  by the crt variable are paged through the command
			  specified by the PAGER variable.  The default
			  command is pg (see pg(1)), but many users prefer
			  more (see more(1) - see ENVIRONMENT VARIABLES).

      quit		  Exit from mailx, storing messages that were read
			  in mbox and unread messages in the user's system
			  mailbox.  Messages that have been explicitly saved
			  in a file are deleted.

      Reply [msglist]
      Respond [msglist]	  Send a response to the author of each message in
			  the msglist.	The subject line is taken from the
			  first message.  If record is set to a file name,
			  the response is saved at the end of that file (see
			  ENVIRONMENT VARIABLES).

      reply [message]
      respond [message]	  Reply to the specified message, including all
			  other recipients of the message.  If record is set
			  to a file name, the response is saved at the end
			  of that file (see ENVIRONMENT VARIABLES).

      Save [msglist]	  Save the specified messages in a file whose name
			  is derived from the author of the first message.
			  The name of the file is based on the author's name
			  with all network addressing stripped off.  See
			  also the Copy, followup, and Followup commands and
			  outfolder (see ENVIRONMENT VARIABLES).



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 mailx(1)							    mailx(1)




      save [filename]
      save [msglist] filename
			  Save the specified messages in the given file.
			  The file is created if it does not exist.  The
			  message is deleted from the mailbox when mailx
			  terminates unless keepsave is set (see ENVIRONMENT
			  VARIABLES and the exit and quit commands).

      set
      set name
      set name=string
      set name=number	  Define a variable called name.  The variable can
			  be given a null, string, or numeric value.  Set by
			  itself prints all defined variables and their
			  values (see ENVIRONMENT VARIABLES for detailed
			  descriptions of the mailx variables).

      shell		  Invoke an interactive shell (see SHELL under
			  ENVIRONMENT VARIABLES).

      size [msglist]	  Print the size in characters of the specified
			  messages.

      source filename	  Read commands from the given file and return to
			  command mode.

      top [msglist]	  Print the top few lines of the specified messages.
			  If the toplines variable is set, it is interpreted
			  as the number of lines to print (see ENVIRONMENT
			  VARIABLES).  The default is 5.

      touch [msglist]	  Touch the specified messages.	 If any message in
			  msglist is not specifically saved in a file, it is
			  placed in the mbox upon normal termination.  See
			  exit and quit.

      Type [msglist]
      Print [msglist]	  Print the specified messages on the screen,
			  including all header fields.	Overrides
			  suppression of fields by the ignore command.

      type [msglist]
      print [msglist]	  Print the specified messages.	 If crt is set,
			  messages longer than the number of lines specified
			  by the crt variable are paged through the command
			  specified by the PAGER variable.  The default
			  command is pg(1) but many users prefer more(1)
			  (see ENVIRONMENT VARIABLES).

      unalias alias	  Discard the specified alias names.




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 mailx(1)							    mailx(1)




      undelete [msglist]  Restore the specified deleted messages.  Restores
			  only messages that were deleted in the current
			  mail session.	 If autoprint is set, the last
			  message of those restored is printed (see
			  ENVIRONMENT VARIABLES).

      unset name...	  Cause the specified variables to be erased.  If
			  the variable was a shell variable imported from
			  the execution environment, it cannot be erased.

      version		  Prints the current version and release date.

      visual [msglist]	  Edit the given messages with a screen editor.	 The
			  messages are placed in a temporary file and the
			  VISUAL variable is used to get the name of the
			  editor (see ENVIRONMENT VARIABLES).

      write [msglist] filename
			  Write the given messages on the specified file,
			  except for the header (the "From ..." line) and
			  trailing blank line.	Otherwise equivalent to the
			  save command.

      xit
      exit		  Exit from mailx, without changing the mailbox.  No
			  messages are saved in the mbox (see also quit).

      z[+|-]		  Scroll the header display forward or backward one
			  screen-full.	The number of headers displayed is
			  set by the screen variable (see ENVIRONMENT
			  VARIABLES).

 TILDE ESCAPES
      The following commands can be used only when in input mode, by
      beginning a line with the tilde escape character (~).  See escape
      (ENVIRONMENT VARIABLES) for changing this special character.

      ~!command		  Escape to the shell.

      ~.		  Simulate end of file (terminate message input).

      ~:mail-command
      ~_ mail-command	  Perform the command-level request.  Valid only
			  when sending a message while reading mail.

      ~?		  Print a summary of tilde escapes.

      ~A		  Insert the autograph string Sign into the message
			  (see ENVIRONMENT VARIABLES).





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      ~a		  Insert the autograph string sign into the message
			  (see ENVIRONMENT VARIABLES).

      ~b name ...	  Add name to the blind carbon copy (Bcc) list.

      ~c name ...	  Add name to the carbon copy (Cc) list.

      ~d		  Read in the dead.letter file.	 See DEAD (under
			  ENVIRONMENT VARIABLES) for a description of this
			  file.

      ~e		  Invoke the editor on the partial message.  Also
			  see the EDITOR environment variable description
			  below.

      ~f [msglist]	  Forward the specified messages.  The messages are
			  inserted into the message without alteration.

      ~h		  Prompt for Subject line and To, Cc, and Bcc lists.
			  If the field is displayed with an initial value,
			  it can be edited as if you had just typed it.

      ~i string		  Insert the value of the named variable into the
			  text of the message.	For example, ~A is
			  equivalent to ~i Sign.

      ~m [msglist]	  Insert the specified messages into the letter,
			  shifting the new text to the right one tab stop.
			  Valid only when sending a message while reading
			  mail.

      ~p		  Print the message being entered.

      ~q		  Quit (terminate) input mode by simulating an
			  interrupt.  If the body of the message is not
			  null, the partial message is saved in dead.letter.
			  See the description of the DEAD environment
			  variable below for a description of this file.

      ~R name ...	  Add name to the Reply-To list.

      ~r filename
      ~<&lt&lt&lt; filename
      ~<&lt&lt&lt;!command	  Read in the specified file.  If the argument
			  begins with an exclamation point (!), the rest of
			  the string is assumed to be an arbitrary shell
			  command and is executed, with the standard output
			  inserted into the message.

      ~s string ...	  Set the subject line to string.




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 mailx(1)							    mailx(1)




      ~t name ...	  Add the given names to the To list.

      ~v		  Invoke a preferred screen editor on the partial
			  message.  Also see the VISUAL environment variable
			  description below.

      ~w filename	  Write the partial message onto the given file,
			  without the header.

      ~x		  Exit as with ~q except the message is not saved in
			  dead.letter.

      ~| command	  Pipe the body of the message through the given
			  command.  If command returns a successful exit
			  status, the output of the command replaces the
			  message.

 ENVIRONMENT VARIABLES
      The following variables are internal mailx program variables.  They
      can be imported from the execution environment or set by the set
      command at any time.  The unset command can be used to erase
      variables.

      allnet		  All network names whose login names match are
			  treated as identical.	 This causes the msglist
			  message specifications to behave similarly.
			  Default is noallnet.	See also the alternates
			  command and the metoo variable.

      append		  Upon termination, append messages to the end of
			  the mbox file instead of inserting them at the
			  beginning of the file.  Default is noappend.

      askbcc		  Prompt for the Bcc list after the message is
			  entered.  Default is noaskbcc.

      askcc		  Prompt for the Cc list after the message is
			  entered.  Default is noaskcc.

      asksub		  Prompt for a subject if it is not specified on the
			  command line with the -s option.  Enabled by
			  default.

      autoprint		  Enable automatic printing of messages after delete
			  and undelete commands.  Default is noautoprint.

      bang		  Enable special-case treatment of exclamation
			  points (!) in shell escape command lines as in
			  vi(1).  Default is nobang.





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      charset=charset	  Set the default character-set.  If none is
			  specified, mailx will attempt to use the value of
			  LANG to look up the system default for the user's
			  locale.  If that is unsuccessful, the default
			  value of us-ascii will be used.

      cmd=command	  Set the default command for the pipe command.	 No
			  default value.

      conv=conversion	  Convert UUCP addresses to the specified address
			  style.  The only valid conversion currently
			  supported is internet, which requires a mail
			  delivery program conforming to the RFC822 standard
			  for electronic mail addressing.  Conversion is
			  disabled by default.	See also sendmail and the -U
			  command-line option.

      crt=number	  Pipe messages having more than number lines
			  through the command specified by the value of the
			  PAGER variable pg by default (see pg(1)).
			  Disabled by default.

      DEAD=filename	  The name of the file in which to save partial
			  letters in case of untimely interrupt or delivery
			  errors.  Default is $HOME/dead.letter.

      debug		  Enable verbose diagnostics for debugging.
			  Messages are not delivered.  Default is nodebug.

      dot		  When processing input from a terminal, interpret
			  an ASCII period character on a line by itself as
			  end-of-file.	Default is nodot.

      EDITOR=command	  The command to run when the edit or ~e command is
			  used.	 Default is ed (see ed(1)).

      encoding=encoding	  Set the default encoding to be used when 8-bit
			  characters are present.  Allowable values are
			  quoted-printable, base64 and 8bit.  The short-hand
			  q-p is also acceptable for quoted-printable.	The
			  default value will be determined based upon the
			  value of charset.  A value of 8bit means not to
			  encode.

      escape=c		  Substitute c for the ~ escape character.

      folder=directory	  The directory for saving standard mail files.
			  User specified file names beginning with a plus
			  (+) are expanded by preceding the file name with
			  this directory name to obtain the real file name.
			  If directory does not start with a slash (/),



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 mailx(1)							    mailx(1)




			  $HOME is used as a prefix.  There is no default
			  for the folder variable.  See also outfolder
			  below.

      header		  Enable printing of the header summary when
			  entering mailx.  Enabled by default.

      hold		  Preserve all messages that are read in the system
			  mailbox instead of putting them in the standard
			  mbox save file.  Default is nohold.

      ignore		  Ignore interrupts while entering messages.  Useful
			  when communicating over noisy dial-up lines.
			  Default is noignore.

      ignoreeof		  Ignore end-of-file during message input.  Input
			  must be terminated by a period (.) on a line by
			  itself or by the ~. command.	Default is
			  noignoreeof.	See also dot above.

      keep		  When the mailbox is empty, truncate it to zero
			  length instead of removing it.  Disabled by
			  default.

      keepsave		  Keep messages that have been saved in other files
			  in the system mailbox instead of deleting them.
			  Default is nokeepsave.

      MBOX=filename	  The name of the file to save messages which have
			  been read.  The xit command overrides this
			  function, as does saving the message explicitly in
			  another file.	 Default is $HOME/mbox.

      metoo		  Usually, when a group (alias) containing the
			  sender is expanded, the sender is removed from the
			  expansion.  Setting this option causes the sender
			  to be included in the group.	Default is nometoo.

      mimeheader=value	  To add or disable MIME header when sending mail.
			  "value" can be 'yes' or 'no'.

      LISTER=command	  The command (and options) to use when listing
			  contents of the folder directory.  The default is
			  ls(1).

      NOMETAMAIL=value	  To disable the usage of metamail to read MIME
			  messages, set the value to TRUE. By default the
			  NOMETAMAIL variable is not set.

      onehop		  When responding to a message that was originally
			  sent to several recipients, the other recipient



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			  addresses are normally forced to be relative to
			  the originating author's machine for the response.
			  This flag disables alteration of the recipients'
			  addresses, improving efficiency in a network where
			  all machines can send directly to all other
			  machines (i.e., one hop away).

      outfolder		  Cause the files used to record outgoing messages
			  to be located in the directory specified by the
			  folder variable.  Default is nooutfolder.  See
			  folder above and the Save, Copy, followup, and
			  Followup commands.

      page		  Used with the pipe command to insert a form feed
			  after each message sent through the pipe.  Default
			  is nopage.

      PAGER= command	  The command to use as a filter for paginating
			  output.  This can also be used to specify the
			  pager command-line options (for example, set
			  PAGER="more -c").  Default is pg (see pg(1)), but
			  many users prefer more (see more(1)).

      prompt= string	  Set the command mode prompt to string.  Default is
			  ?.

      quiet		  Refrain from printing the opening message and
			  version when entering mailx.	Default is noquiet.

      record=filename	  Record all outgoing mail in filename.	 Disabled by
			  default.  See also outfolder above.

      save		  Enable saving of messages in dead.letter on
			  interrupt or delivery error.	See DEAD for a
			  description of this file.  Enabled by default.

      screen=number	  Set the number of lines in a screen-full of
			  headers for the headers command.

      sendmail=command	  Alternate command for delivering messages.
			  Default is mail (see mail(1)).

      sendwait		  Wait for background mailer to finish before
			  returning.  Default is nosendwait.

      SHELL=command	  The name of a preferred command interpreter.
			  Default is the user's login program (see
			  passwd(4), shells(4), and chsh(1)).  Note: in the
			  unusual case that a user's login program is a
			  script file from which mailx is executed, rather
			  than a shell, then mailx requires that the user



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			  explicitly set SHELL=/usr/bin/sh in his or her
			  $HOME/.mailrc file.

      showto		  When displaying the header summary and the message
			  is from you, print the recipient's name instead of
			  the author's name.

      sign=string	  The variable that is inserted into the text of a
			  message when the ~a (autograph) command is given.
			  No default (see also ~i under ILDE ESCAPES).

      Sign=string	  The variable inserted into the text of a message
			  when the ~A command is given.	 No default (see
			  also ~i (TILDE ESCAPES)).

      SMARTMAILER	  When SMARTMAILER is set, various commands use the
			  From: line instead of the default From line.

      toplines=number	  The number of lines of header to print with the
			  top command.	Default is 5.

      VISUAL=command	  The name of a preferred screen editor.  Default is
			  vi (see vi(1)).

 EXTERNAL INFLUENCES
    Environment Variables
      The following are environment variables taken from the execution
      environment and are not alterable within mailx.

	   HOME		  The user's home directory.  This is usually the
			  current directory immediately after login.

	   MAILRC	  The name of the mailer start-up file.	 Default is
			  $HOME/.mailrc.

	   LC_COLLATE
	   LC_CTYPE	  LC_COLLATE and LC_CTYPE influence mailx when the
			  command interpreter (see SHELL below) is invoked.
			  To determine the behavior of LC_COLLATE and
			  LC_CTYPE, see the corresponding shell manual entry
			  for the applicable command interpreter

	   LC_TIME	  LC_TIME determines the format and contents of the
			  date and time strings displayed.  If LC_TIME is
			  not specified in the environment, or is set to the
			  empty string, the value of LANG is used as a
			  default.  If LANG is not specified or is set to
			  the empty string, a default of "C" (see lang(5))
			  is used instead of LANG.  If any
			  internationalization variable contains an invalid
			  setting, mailx behaves as if all



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			  internationalization variables are set to "C".
			  See environ(5).

	   TMPDIR	  When set, the TMPDIR environment variable
			  specifies a directory to be used for temporary
			  files, overriding the default directory /tmp.

    International Code Set Support
      Single- and multi-byte character code sets are supported within mail
      text.  Headers are restricted to characters from the 7-bit USASCII
      character code set (see ascii(5)).

 WARNINGS
      Where command is shown as valid, arguments are not always allowed.
      Experimentation is recommended.

      Internal variables imported from the execution environment cannot be
      unset.

      The full internet addressing is not fully supported by mailx.  The new
      internationalization standards need some time to settle down.

      mail(1), the standard mail delivery program, treats a line consisting
      solely of a dot (.) as the end of the message.

      Using two separate mail programs to access the same mail file
      simultaneously (usually inadvertently from two separate windows) can
      cause unpredictable results.

 FILES
      /var/mail/			 Post office directory (mode 775,
					 group ID mail)

      /var/mail/user			 System mailbox for user (mode 660,
					 owned by user,group ID mail)

      $HOME/.mailrc			 Personal start-up file

      /usr/share/lib/mailx.rc		 Global start-up file

      $HOME/mbox			 Secondary storage file

      /tmp/R[emqsx]*			 Temporary files

 SEE ALSO
      mail(1), pg(1), ls(1).

 STANDARDS CONFORMANCE
      mailx: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2





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