A representation of a device that asynchronously transmits and receives serial data.

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5
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2answers
569 views

Name of the font used in Linux Console (TTY)

What is the name of the font that is used in Linux Console TTY 1-6?
2
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2answers
1k views

reading /dev/ttyUSB0

I'm trying to see the output of an accelerometer with Ubuntu (15.04), kernel 3.19. The UART driver is cp210x.ko, and the chip of the accelerometer is MPU6050w. So, when I plug the device, I have this: ...
4
votes
0answers
236 views

Start application using xinit on different tty

I'm using Fedora 21, trying the following: On tty1 is running KDE, just as normal. But to speed up my games/avoid them changing something like gamma, I want to run them on a differnt tty, starting a ...
3
votes
1answer
318 views

Using named pipes to send keypresses to an interactive program

I have a program, mpg123, which has an interactive mode that allows keyboard commands from stdin to do useful things such as control volume. I am trying to start up mpg123 so that it reads commands ...
8
votes
3answers
4k views

How do I permanently change the console TTY font type so it holds after reboot?

I'm running Ubuntu 15.04 64-bit Desktop Edition (A Debian based Linux). I used sudo dpkg-reconfigure console-setup from the command line to change the default console font type to Terminus. ...
3
votes
2answers
235 views

Remove data from the STDIN stream buffer of another TTY session

I encountered a problem the other day while running multiple tty sessions in separate terminal windows. I was running a expensive disk access command and was waiting for it to return. Meanwhile I was ...
0
votes
1answer
425 views

Why does GDM start in TTY2 and TTY7

I have Ubuntu 15.04 and GNOME 3.16 installed. This PPAs are enabled: deb http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu vivid main deb http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu ...
0
votes
1answer
175 views

Linking two hardware serial ports

I have two micro-controllers which are connected to my computer(ubuntu 12.04) through serial-USB cables. One of the controllers (ttyUSB0) is programmed such that it sends data serially and another (...
1
vote
0answers
119 views

Setting custom baud rate on console

Just for aesthetics I would like to have my text on my console be displayed at a lower speed. I've tried using things like screen with custom baud rates of /dev/tty1 but it wouldn't work, input from ...
1
vote
1answer
162 views

tty problem: binary mess instead of “text good data”

I am trying to use a GPS over moxa Uport 1110 usb-to-serial device. The driver of UPort was installed OK, and GPS sends NMEA (text) data. However, when I issue command cat /dev/ttyUSB0 my terminal (...
0
votes
1answer
85 views

What is a UART port

I have a .fex file for Cubietruck. Supposedly, the bluetooth pins are defined in the uart_para2. With the current config, I have uart0 and uart2 enabled, and everything else is disabled. Bluetooth ...
1
vote
2answers
381 views

How are long command lines ( > $COLUMNS ) automatically wrapped to a new line?

There are several points where I/O is passed through, some of which (to my knowledge) are the shell, pty, tty, termios, terminal emulator application. In most terminal emulators, long command lines (...
1
vote
1answer
287 views

_Robust_ bluetooth serial port console/tty

I've managed to create and connect to a console via bluetooth, as is described in many Q&A's FAQs Guides etc found via a google search. Briefly, in sudo mode, /usr/sbin/hciconfig hci0 piscan /...
1
vote
1answer
716 views

How do I change which monitor the TTY shows up on?

When I boot, or when I press CtrlAltF*, I am taken to a physical terminal/TTY. The problem is that the TTY shows up on my HDMI monitor, which is actually not even in the same room as me. Is it ...
1
vote
1answer
165 views

Is the PTTY inside the Kernel or Userspace?

I read, that drivers are a way to expand the Kernels abilities to communicate with hardware devices, since there are so many and will be even more the Kernel has to be expandable. In order to ...
2
votes
0answers
693 views

cat /dev/ttyS0 Input/output error

I created infrared receiver as in LIRC manual (http://www.lirc.org/receivers.html). And tested it on windows using program called Terminal. When I switched on RTS pin DCD pin was also switched on ...
1
vote
1answer
229 views

What decides where TTY and boot messages are displayed?

I recently switched from Fedora 21 to Arch Linux, and one thing that bothers me is that Arch does not put boot messages and TTYs' on all available outputs like Fedora does, but only on the primary ...
1
vote
2answers
1k views

Redirect script output to /dev/tty1 and also capture output to file

I want to display text output on the console that is always displayed on a small screen on my Raspberry Pi. The following code works for showing that text output: cd /home/pi/...
1
vote
1answer
68 views

Saving colored output regardless of the source

How can I save colored output to a file regardless of the source when the sources turn coloring off if they detect their stdout isn't a terminal?
1
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0answers
125 views

how to copy files using TTY teminal from one pc to another connected through same home network

In my academic lab my friend copied files from one computer to another that were serially connected using the tty4. How could he have done this if there was no internet and he didn't install any new ...
1
vote
0answers
156 views

Fedora 21 VT Change Hangs

On Fedora 21, I have LightDM and i3 installed. When I switch to tty2 and do a bit of work then switch back, my laptop hangs. I am using Intel HD Graphics 4600. Thanks UPDATE now it sometimes ...
4
votes
2answers
628 views

How to get the real name of the controlling terminal?

How can one get the real name of the controlling terminal (if there is one, else an error) as a pathname? By "real name", I mean not /dev/tty, which cannot be used by other arbitrary processes to ...
1
vote
1answer
45 views

Stop interface name iteration?

I have a device that comes up as ttyACM0, however every time it is reset it iterates, so next time it will come up as ttyACM1 etc. Where might this lock be located so that I can remove it? I'd like ...
3
votes
2answers
350 views

Detect how much of Unicode my terminal supports, even through screen

Here's the problem: I want to be able to discern if my terminal is capable of decent unicode or not, in order to use some characters or not, much like glances does, that sometimes uses colors and ...
0
votes
1answer
260 views

Exit /dev/tty after error message

I run this bash function when a button is pressed, it calls my mobile, however when the call ends or I reject the call, it hangs in /dev/tty and does not return to the main program call.sh #!/bin/...
0
votes
1answer
92 views

RHEL Serial TTY

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Technical_Notes/deployment.html According to this, /etc/inittab has been deprecated. As suggested from this I created a /...
0
votes
0answers
281 views

Serial port locked by random process

I have an issue with trying to open a USB device's serial port with pyserial. It seems that as fast as I connect the device, /dev/ttyACM0 is used by some random process. ModemMana 851 root 8u ...
1
vote
1answer
207 views

Why does tapping a TTY device only capture every other character?

So, I came across the ttyname function (unistd.h) and had to test it out. #include <unistd.h> #include <stdio.h> int main(void) { printf("%s\n", ttyname(0)); return 0; } On my ...
5
votes
1answer
2k views

Is it possible to open a terminal with specified tty/pty

(I am using Ubuntu.) In my understanding tty is just a kind of port. You input something and it should output something. And a terminal (emulator) is a software handle those input and output. ...
0
votes
0answers
267 views

linux + what are the messages bad tty under /var/log/messages file

under /var/log/messages I see the following messages "bad tty" what the meaning of these messages? second is it caused because some application that called - owstd ? as we can see from the log? ...
5
votes
1answer
781 views

How do I come by this pty and what can I do with it?

It seems that a simple shell redirect from /dev/ptmx gets me a new pseudo-terminal. $ ls /dev/pts; ls /dev/pts </dev/ptmx 0 1 2 ptmx 0 1 2 3 ptmx It disappears as soon as the process that ...
4
votes
0answers
447 views

How to prevent kernel or any broadcast messages from flooding the TTYs?

Because of some hot-plugging issue, similar to what talked of here, the TTY displays show a continuous stream of messages (which are also logged in the /var/log directory). Every text I key in flows ...
2
votes
1answer
1k views

Determine the owner of the session of a process

I am trying to implement a way to determine which user is owner of some process's session, in a way that's as cross-platform as possible. In Linux I can trace the process's pty by following the link /...
1
vote
2answers
1k views

Replace user shell from dash to bash [duplicate]

Everytime I use my terminal, I am always put into the dash shell instead of bash. Is there any way to change this even just for my user only? Tried apt-alternatives but setting the default shell can't ...
0
votes
1answer
43 views

Make own graphical server [closed]

I had experience to work with framebuffer and found it pretty well to make own graphical applications. But the problem is that framebuffer is too slow. My goal: 1) Make a new tty which will work for ...
1
vote
1answer
61 views

Controlling the terminal while in the middle of a pipe [duplicate]

Say I have 3 commands linked through pipes: A | B | C I would like B to output error messages to stderr and some progress to the terminal. If stderr is the same as the terminal, then that is easy: ...
1
vote
0answers
118 views

How to avoid session login failure with ecryptfs

After encrypting my /home directory with the migrate-home ecryptfs-utils script I can't log in to an XFCE session on my Manjaro system from the normal login screen. If I try to, the session is ...
1
vote
2answers
94 views

Use/Grab the only keyboard with no user logged locally

I have a raspberry pi running some software (I have the source) that needs user interaction and has a special (USB) keyboard with only 3 keys. The program runs on framebuffer (SDL) and is launched ...
21
votes
3answers
12k views

Start a process on a different tty

After about an hour of Googling this, I can't believe nobody has actually asked this question before... So I've got a script running on TTY1. How do I make that script launch some arbitrary program ...
5
votes
2answers
200 views

Save scratch emacs file without access to terminal

I'm trying to save the contents of an Emacs scratch buffer, which I can't access any more due to an inaccessible terminal. On my Linux box I've ssh'ed to a server, and started Emacs. My Linux box has ...
2
votes
3answers
147 views

(In)significance of [… ] and tty root processes

A colleague of mine assigned me to perform a root-cause analysis of an enterprise security server sometime ago. We knew the problem resided in one of the processes run by root but did not know which ...
0
votes
2answers
5k views

How to switch between tty and xorg session

My xorg session is on tty1 and if I want to issue a command from tty (because I cannot do it from xorg session for some reasons), I press Ctrl+Alt+F2, for example, and type a command. But I cannot ...
-2
votes
2answers
911 views

Corresponding 7zip command for unzip -p -a

I have a question regarding unzip command in Unix. As of now my Unix command unzip -p -a is able to zip the file which are lesser in size. But if the file size is larger then the command is not able ...
0
votes
0answers
317 views

How to switch between the virtual consoles ttyv1, ttyv2 10 on FreeBSD?

The CTRL+ALT+F1..F12 keybinding does not work. I'm using kde interface.
6
votes
1answer
314 views

Is it possible to merge two screen sessions chained?

Let us imagine I have only one terminal. To overcome this trouble I use screen, so happy! However, I need to connect to another computer over ssh, to prevent to open several connections I want to run ...
1
vote
1answer
232 views

Echoing Backspace Characters in the Terminal

I'm working with picocom running inside gnome-terminal. I have local echo switched on inside picocom using the -e option, and when I backspace I can see that caret moves backwards, however the ...
1
vote
1answer
19 views

Locating the terminal currently in use

I need to write a script to test if im using the correct terminal and then print a message This is what i have so far if(???? == dev/pts/1) echo Access Granted. Welcome. endif I dont know how to ...
0
votes
2answers
300 views

User messages can't be switched on Fedora

A non-root user X cannot message a user Y. This is despite both users having successfully run mesg y. I've tried following advice for similar problems on Ubuntu described in this question. No luck. A ...
3
votes
1answer
294 views

Replay a screen log file incrementally

I have run some commands in gnu screen and used the C-a H command to record the output to a screenlog.0 file. However now I want to view it. There are loads of terminal escape sequences, so just cat-...
3
votes
1answer
547 views

How can I make a psf font for the console from a otf one?

I want to use the Inconsolata font in the tty console, but I need to generate a psf font for that. I found that there are two tools that should help me otf2bdf and bdf2psf. But everytime I try to use ...