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           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
                  returned 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/hex-
                  adecimal 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
           -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
                  insist on changing its DTE speed to match the line speed. I rec-
                  ommend 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.
                  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/mg_ttyxx.log"   (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.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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