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Top Forums UNIX for Dummies Questions & Answers How to Send AT Commands to mgetty? Post 302917773 by mrm5102 on Thursday 18th of September 2014 12:55:53 PM
Old 09-18-2014
Hey Perderabo, thanks for the reply, very much appreciated!

I apologize for not responding to your post, but I had gotten pulled off this thing with mgetty that I was working on
and am just coming back around to it now... Again sorry for not getting back to you sooner.

Humm... Oh ok, when I had read the man page I guess I didn't put it together that the -m option for the initialization
string
was where you would enter those commands. Doohh!!

And I guess I didn't see the AT Command example they use right below that -m option's section, which showed:
Code:
       -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'

Basically, I will be connecting to this USB Modem over the phone network from my PC to a computer in a remote
location (*which will contain the USB Modem). In my successful tests, I used Minicom on my PC (*the client) and
dialed the Modems Telephone number (*using ATD55555...), then on the server side (*the computer with the USB
Modem)
would be running mgetty and would answer the incoming call from my PC and I would then be
prompted with a login prompt from the server-side's computer. And after logging in I get that server's Console/CLI.

Modem: Zoom 56k USB Modem (*Model 3095) - which works great BTW...
Computer w/ USB Modem:CuBox-i, running OpenSuSE 13.1 *for ARMv7

The ONLY thing I'm really having trouble with now is trying to get mgetty to start-up at boot time. OpenSuSE 13.1 uses
systemd instead of inittab which is where I am used to starting things during boot. When I test mgetty from the CLI
and I watch it's log file (*/var/log/mgetty.ttyACM0) even though it's working when I run it from the CLI, I can see in
the log that it says:
Quote:
09/18 12:20:14 CM0 WARNING: parent process not init(pid=1), but pid=3353 (-bash)
..................
.......
......other stuff.....
.......
..................
09/18 12:22:51 CM0 cannot set controlling tty (ioctl): Operation not permitted
09/18 12:22:51 CM0 >>> this might be caused because you have run mgetty/vgetty
09/18 12:22:51 CM0 >>> from the command line. Don't do that, use /etc/inittab!
So now I'm trying to figure out how to use systemd since this is my 1st time attempting to use it. So far as I can tell
I need to have some kind of mgetty.service file located in /etc/systemd/system/*.... But it's starting to get a little
confusing with the .conf, .target and .service files...

Do you have any experience creating your own custom systemd files to start a program during boot?

Again, thanks alot for your reply it is much appreciated, and I apologize for taking so long to get back to you...

Thanks Again,
Matt
 

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gnome-terminal(1)						   User Commands						 gnome-terminal(1)

NAME
gnome-terminal - terminal emulator for GNOME SYNOPSIS
gnome-terminal [--window-with-profile=profilename] [--tab-with-profile=profilename] [--command command] [--execute command] [--role=role] [--show-menubar | --hide-menubar] [--use-factory | --disable-factory] [--title=title] [--working-directory=dirname] [gnome-std-options] DESCRIPTION
gnome-terminal is the GNOME terminal emulation program. It provides access to the UNIX shell on the GNOME environment. gnome-terminal sup- ports multiple profiles to allow easy switching between preferences, and supports tabbing so that multiple terminals can be managed from a single window. By default, all GNOME terminals share a single process, reducing memory usage. This can be disabled by starting gnome-ter- minal with the --disable-factory option. OPTIONS
The following options are supported: --command commanExecutes the command command instead of the shell. This saves some memory if you just plan to run a dedicated application on that window. You can also use -e to specify this option. --execute commanThis option is provided for compatibility reasons. It is the same as the --command option. You can also use -x to specify this option. --disable-factorDo not register with the activation name server, and do not reuse an already running GNOME terminal process. --hide-menubar Hide the menubar. This applies only to one window. When used with multiple --window-with-profile options, it applies to the --window-with-profile option immediately to the left. Can be specified multiple times, once for each --window-with-profile option. --role=role The GNOME session manager follows the ICCCM convention of using the window title and the window role to identify specific windows. The session manager uses this information to put windows back in the same place when the user restarts their ses- sion. If all windows have a unique title, there is no need to set the role. However, as it is common for multiple GNOME terminals to have the same title, the user can also specify the role on the command line with the --role option. This helps the session manager to properly identify and restart each GNOME terminal (in the same location, and so on). When used with multiple --window-with-profile options, it applies to the --window-with-profile option immediately to the left. Can be specified multiple times, once for each --window-with-profile option. --show-menubar Show the menubar. This applies only to one window. When used with multiple --window-with-profile options, it applies to the --window-with-profile option immediately to the left. Can be specified multiple times, once for each --window-with-profile option. --tab-with-profiCreatesilanatab that uses the specified profile. This argument may be specified multiple times to create multiple tabs in a terminal. If this is used with multiple --window-with-profile options, the tab is created for the window that corresponds to the --window-with-profile option immediately to the left. --title=title Set the title for the GNOME terminal to be title. --use-factory Register with the activation name server, and reuse an already running GNOME terminal process. --window-with-prCreatesroaiGNOMEeterminal and a tab that uses the specified profile. This may be used with the --tab-with-profile option to create additional tabs. Multiple --window-with-profile options can be specified to create multiple GNOME terminal windows. All options specified after an --window-with-profile option apply to that --window-with-profile option only. --working-directSet=thenworking directory for the GNOME terminal to be dirname. gnome-std-optionStandard options available for use with most GNOME applications. See gnome-std-options(5) for more information. EXTENDED DESCRIPTION
gnome-terminal is designed to emulate the xterm program provided by the X Consortium. The xterm(1) program in turn is an almost-complete emulation of the DEC VT102 terminal. gnome-terminal supports the same extensions to the VT102 as those provided by the xterm program, through special escape sequences. The xterm program is an evolving program. Recent changes to xterm have been been incorporated into gnome- terminal. This includes emulation of the newer DEC VT220 escape sequences. EXAMPLES
Example 1: Running the `minicom' terminal emulator on the window example% gnome-terminal --command minicom Example 2: Monitoring the system example% gnome-terminal --command top Example 3: Starting two windows with different profiles example% gnome-terminal --window-with-profile=FirstProfile --tab-with-profile=SecondProfile --window-with-profile=SecondProfile In this example, the first window will have two tabs (FirstProfile and SecondProfile) and the second window will have one tab (SecondPro- file). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables, set by gnome-terminal: TERM This variable is set to xterm by default. Some implementations of curses, and applications based on curses, may prefer the value to be xterm-color, color-xterm, or xterm-debian to support color. Users might need to change this setting to one of these values to enable color for such applications. COLORTERM This variable is set to xterm. Various applications (especially the Slang-based applications) use this setting to determine whether the terminal supports color. WINDOWID This variable contains the X11 Window identifier. This is sometimes used by applications to modify the contents of this window or provide special effects. EXIT STATUS
The following exit values are returned: 0 Application exited successfully >0 Application exited with failure FILES
The following files are used by this application: /usr/bin/gnome-terminal Executable for GNOME terminal emulator ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgnome-terminal | +-----------------------------+-----------------------------+ |Interface stability |External | +-----------------------------+-----------------------------+ SEE ALSO
gnome-session(1), xterm(1), vte(1), libvte(3), gnome-std-options(5) Latest version of the GNOME Desktop User Guide for your platform. NOTES
Written by Michael Zucchi, Miguel de Icaza, Erik Troan. Updated by Brian Cameron, Sun Microsystems Inc., 2003, 2004. SunOS 5.10 31 Aug 2004 gnome-terminal(1)
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