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RedHat 9 (Linux i386) - man page for mgetty (redhat section 8)

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 initialization, 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 facilities.

       This manpage doesn't try to detail mgetty setup in detail, it just lists the  most  impor-
       tant options. For detailed instructions, see the info file mgetty.info (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 logging, 9 is really
	      noisy. The log file is usually /tmp/log_mg.<device>

       -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. Various tokens are
	      allowed in this string. These tokens are: @ for the system name,	\n,  \g,  \f  for
	      newline, bell, and form feed, respectively. \v and \r will expand to the OS version
	      and release.  \P, \l and \L will expand to the tty name ("ttyS0"). \I will give the
	      "CONNECT	foobar"  string returned by the modem, and \S and \b will output the port
	      speed. \N and \U give the number of users currently logged in. \C will  be  changed
	      into  the  result  of  ctime(),  and \D or \d and \T or \t will output the date and
	      time, respectively.  Finally, \<digit> will use digit as	octal/decimal/hexadecimal
	      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 1.

       -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-

       -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 sys-
	      tems (/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
	      insist on changing its DTE speed to match the line speed. I recommend 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 program  for  user  login
	      instead of /bin/login. How this is done is explained in this file.

	      controls	acceptance/denial of incoming calls based on the caller's number.  Avail-
	      able 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/nologin.ttyxx via the cron program at the appropriate time.

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

	      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.log.ttyxx" (for the mgetty process handling
       "ttyxx").  If it doesn't contain enough details, enhance  the  log  level  with	the  '-x'
       option to mgetty, e.g. "-x 5".

       Many  of the common problems and solutions are discussed in the mgetty manual and the FAQ.
       Please see the WWW page at http://alpha.greenie.net/mgetty/ 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 configured by changing the source and recom-

       Users never read manuals...

       g32pbm(1), sendfax(8), getty(8), mgettydefs(4), mgetty.info

       mgetty is Copyright (C) 1993 by Gert Doering, <gert@greenie.muc.de>.

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

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