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mgetty(8)		     mgetty+sendfax manual		     mgetty(8)

       mgetty -	smart modem getty

       mgetty [options]	ttydevice [gettydefs]

       Mgetty is a ``smart'' getty replacement,	designed to be used with hayes
       compatible data and data/fax modems.  Mgetty knows about	modem initial-
       ization,	 manual	 modem	answering (so your modem doesn't answer	if the
       machine isn't ready), UUCP locking (so you can use the same device  for
       dial-in	and dial-out).	Mgetty provides	very extensive logging facili-

       This manpage doesn't try	to detail mgetty  setup	 in  detail,  it  just
       lists  the  most	 important options. For	detailed instructions, see the
       info file (mgetty.texi).

       -k <space>
	      Tells mgetty to leave <space> kbytes free	on disk	when receiving
	      a	fax.

       -x <debug level>
	      Use  the	given level of verbosity for logging - 0 means no log-
	      ging,  9	is   really   noisy.   The   log   file	  is   usually

       -s <speed>
	      Set the port speed to use, e.g. "-s 19200".

       -r     Tells  mgetty  that it is	running	on a direct line. UUCP locking
	      is done, but no modem initialization whatsoever.

       -p <login prompt>
	      Use the given string to prompt users for their login names. Var-
	      ious  tokens are allowed in this string. These tokens are: @ for
	      the system name, \n, \r, \g, \b, \v, \f, \t  for	newline,  car-
	      riage return, bell, backspace, vertical tab, form	feed, and tab,
	      respectively.  \P	and \L will expand to the tty name  ("ttyS0").
	      \Y  will	give the Caller	ID, \I the "CONNECT foobar" string re-
	      turned by	the modem, and \S will output the port speed.  \s, \m,
	      \V, \R represent the operating system, the hardware name,	the OS
	      version, the OS release.	\N and \U give	the  number  of	 users
	      currently	 logged	 in.   \C  will	 be changed into the result of
	      ctime(), and \D and \T will output the date  and	time,  respec-
	      tively.  Finally,	\<digit> will use digit	as octal/decimal/hexa-
	      decimal representation of	the character to follow.

	      The default prompt is specified at compile time.

       -n #   Tells mgetty to pick up the phone	after the #th RING. Default is

       -R <t> Tells mgetty to go into "ringback" (aka "ring-twice") mode. That
	      means: the first call is never answered, instead the caller  has
	      to hang up after the phone RINGs,	wait 30	seconds, and then call
	      again in the next	<t> seconds for	mgetty to pick up. If no  call
	      comes, mgetty will exit.

	      I	 do not	really recommend using this, better get	a second phone
	      line for the modem.

       -i <issue file>
	      Output <issue file> instead of /etc/issue	before	prompting  for
	      the user name. The same token substitutions as for the the login
	      prompt are done in this file.

       -D     Tells mgetty that	the modem is to	be treated as a	DATA modem, no
	      fax initalization	is attempted.

       -F     Tells  mgetty  that  DATA	 calls	are  not allowed and the modem
	      should be	set to Fax-Only.

       -C <class>
	      Tells mgetty how to treat	the modem. Possible values for <class>
	      are  "auto" (default, try	to find	out whether the	modem supports
	      fax), "cls2" (use	the class 2 fax	command	set, even if the modem
	      supports class 2.0), "c2.0" (use the class 2.0 fax command set),
	      "data" (data only, exactly as the	-D switch).

       -S <g3 file>
	      If a call	comes in and requests fax polling,  mgetty  will  send
	      the named	file. Note: not	all fax	modems support poll sending.

       -I <fax id>
	      Use  the	given  fax station ID for fax identification. Not used
	      for data modems.

       -b     Open the port in blocking	mode. Best used	 in  combination  with
	      "-r". This is the	default	if mgetty is called as getty.  You may
	      want to use this if you want to make use	of  the	 two-device  /
	      kernel-locking  scheme  of the Linux and SunOS operating systems
	      (/dev/ttyS.. and /dev/cua..). I do not recommend it,  it's  just
	      include  for  completeness,  and	to  be able to use mgetty as a
	      full-featured getty replacement.

       -a     Use autobauding. That is,	after a	 connection  is	 made,	mgetty
	      parses the "CONNECT foo" response	code of	the modem and sets the
	      port speed to  the  first	 integer  found	 after	the  "CONNECT"
	      string,  "foo"  in this example. You need	this if	your modem in-
	      sist on changing its DTE speed to	match the line speed. I	recom-
	      mend  against  using it, better leave the	port speed locked at a
	      fixed value. The feature is included  because  there  exist  old
	      modems that cannot use a fixed (locked) port speed.

       -m 'expect send ...'
	      Set  the	"chat  sequence" that is used to initialize the	modem.
	      For an empty expect part,	use empty double  quotes  ("").	 Since
	      the  sequence  contains spaces, you have to enclose all of it in
	      single quotes(''). Example:

	      mgetty -m	'"" ATH0 OK'

	      Main configuration file.

	      controls whether (and when) mgetty should	call some  other  pro-
	      gram  for	user login instead of /usr/bin/login. How this is done
	      is explained in this file.

	      controls	acceptance/denial  of  incoming	 calls	based  on  the
	      caller's	number.	  Available  only  if you have "caller ID" and
	      your modem supports it.

	      controls whether mgetty should pick up the phone	upon  incoming
	      calls. If	the file exists, calls are completely ignored. You can
	      use this,	for example, to	stop mgetty during day time,  and  let
	      it  pick	up  at night only, by creating and removing /etc/nolo-
	      gin.ttyxx	via the	cron program at	the appropriate	time.

	      will be printed after a connection is  established,  and	before
	      the with the '-i'	option.

	      Debug log	file, see below.

       If mgetty doesn't work the way it should, the main source of diagnostic
       data is the log file.  It can be	found in "/var/log/mgetty.ttyxx"  (for
       the mgetty process handling "ttyxx").  If it doesn't contain enough de-
       tails, enhance the log level with the '-x' option to mgetty,  e.g.  "-x

       Many  of	 the common problems and solutions are discussed in the	mgetty
       manual and the FAQ.  Please see	the  WWW  page	at  http://alpha.gree- for both.

       Not  all	 of  mgetty  configuration can be done at run-time yet.	Things
       like flow control and file paths	(log file / lock file) have to be con-
       figured by changing the source and recompiling.

       Users never read	manuals...

       g32pbm(1), sendfax(8), getty(8),	mgettydefs(4),

       mgetty is Copyright (C) 1993 by Gert Doering, <>.

greenie			     27	Oct 93 - 21 Jul	98		     mgetty(8)


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