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

NAME

       mgetty - smart modem getty

SYNOPSIS

       mgetty [options] ttydevice [gettydefs]

DESCRIPTION

       Mgetty is a ``smart'' getty replacement, designed to be used with hayes compatible data and data/fax modems.  Mgetty knows about modem ini-
       tialization, 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 important options. For detailed instructions, see the
       info file mgetty.info (mgetty.texi).

OPTIONS

       -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, 
, g, f for newline, bell, and form feed, respectively. v and 
 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    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 	 will output the date and time, respectively.  Finally, <digit> will use digit as octal/decimal/hexadecimal  rep-
	      resentation 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-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 recommend against using it, better leave the port speed locked at a fixed value. The fea-
	      ture 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'

FILES

       /etc/mgetty+sendfax/mgetty.config
	      Main configuration file.

       /etc/mgetty+sendfax/login.config
	      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.

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

       /etc/nologin.ttyxx
	      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.

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

       /var/log/mgetty.log.ttyxx
	      Debug log file, see below.

DIAGNOSTICS

       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.gree-
       nie.net/mgetty/ for both.

BUGS

       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...

SEE ALSO

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

AUTHOR

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

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