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

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4
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1answer
37 views

What exactly is 'scrollback' and 'scrollback buffer'?

What are "scrollback" and "scrollback buffer" in programs like bash and screen, and how do they relate to the tty, the programs being run, and stdin/ stdout/ stderr? Here is the only definition of ...
3
votes
2answers
44 views

change tty login timeout - ArchLinux

By default when I login to my Arch linux box in a tty, there is a timeout after I type my username but before I type my password. So it goes like this Login: mylogin <enter> Password: (+ 60 ...
2
votes
0answers
47 views

Can't login using serial on ttyO0 - BeagleBone Black

I boot Beaglebone Black, connected to my desktop by serial. It was working great, until now. Beagle is booting, output shows up on the console, but at the end I can't log in. I can't type the login, ...
1
vote
1answer
81 views

Why X server runs on TTY1 and not TTY7 on Arch Linux?

I've used Debian derivates (*buntu, CrunchBang), Mandriva, OpenSuSE, Fedora, name it.. all of them had X server at TTY7 (at least I think it was 7), accessed with: Ctrl + Alt + F7 Now, I moved to ...
0
votes
0answers
76 views

TTY1 message help? (with picture)

When I boot up , I am greeted with a black TTY1 screen with the following error Kali GNU/Linux 1.0.7 kali tty (screenshot here) Kali Login:[ 31.695480] brcmsmac: bcma0:0: brcmsmac: ...
0
votes
1answer
28 views

Letters tty terminal text mode are very small in debian. How to increase? [duplicate]

My Debian 7 is with letters tty terminal text mode are very small. How to increase? I know that Fedora 20 is possible to install in a troubleshooting installation. Thanks!
1
vote
1answer
114 views

How to read/write to tty* device?

I have a device that sends information over USB to my computer. Arch Linux sets up this device by creating a file named ttyUSB0 in /dev/. I have been using GTKterm to receive this incoming information ...
0
votes
0answers
13 views

How to use stty to bind alt/option j to stop current process [duplicate]

I know stty intr ^j will bind Ctrl+j to do intr, but I want to bind this to Alt+j or Option+j. Any one know how to do this?
1
vote
0answers
22 views

How do I assign the controlling terminal to other process?

I use TIOCSCTTY to forcibly take over the controlling terminal in other "remote" application. But after the application finishes running, controlling terminal gets orphaned and bash stops reacting to ...
2
votes
2answers
111 views

Sending message from one terminal user to another user

I have a user of name x in tty1 and y in tty2. Now x wants to write some message to y and vice-versa. Now I typed in tty1 terminal write y tty2 It is showing write:write:you have write permission ...
0
votes
2answers
44 views

systemctl start depending on tty

I would like to start Apache automatically on my machine, but only if I login from TTY1 (I do not run a display manager). If I log in from any other TTY, it should not start. I tried this in my ...
0
votes
0answers
43 views

Script to gracefully kill X server and drop to tty?

I use the terminal to do the majority of my day-to-day computing, so I have the default runlevel set to 3 in /etc/inittab and I only start the X server when I need to. I currently have the following ...
0
votes
0answers
25 views

Modifying /bin/login or workaround

I'd like to modify (or rather create a modified copy of) /bin/login. I want the script to start in all ttys (like ordinary /bin/login) but with different functionality - it should allow user to login ...
1
vote
1answer
33 views

Meaning of entries in /etc/securetty?

I've been given a set of entries to apply to /etc/securetty, what does each of them mean? console tty1cd / tty2 tty3 tty4 tty5 tty6 ttyS0 ttyS1 I'm especially interested in the "tty1cd /" entry. I ...
2
votes
1answer
85 views

Remove the newline before `/etc/issue` in tty

I want to remove the default newline inserted before the content of /etc/issue on login prompt in tty. I'm using agetty and systemd. I tried to add the --nonewline option to my getty@tty5.service : ...
1
vote
1answer
38 views

Can I switch to another process in another tty# terminal from an ssh terminal?

Here's the deal. I have a Linux Mint 15 server running a web server, an ssh server, and a minecraft server. When I go back to college after the summer, I want to leave my machine at home (6 hrs away) ...
3
votes
1answer
71 views

Comunicate with remote Serial over TCP/IP as /dev/ttyX device

I've one serial device on 192.168.x.x:yyyy (where "x" and "y" are real number) and it works correctly. But I want to communicate with this as /dev/ttyX device. I've tested socat command but not ...
5
votes
2answers
137 views

Terminate dropped SSH sessions

My SSH sessions seem to be dropping though that is not my major problem - the major problem is my previous sessions are still alive, worse yet one of them is running visudo preventing me from ...
0
votes
0answers
53 views

Schemes for linux tty and xterm

I actually prefer the font and colorscheme used when I'm in a tty terminal. After I start up a window manager, the colorscheme and font are completely different when I'm in xterm -- which is expected. ...
4
votes
2answers
160 views

What is the TTY major number of your Unix?

I'm currently working on a serial port library which already uses special frameworks to get information about serial ports on the system. Though serial ports are a fundamental design in Unix—as ...
1
vote
0answers
36 views

Cygwin serial tty device for high-numbered COM ports

My hardware enumerates as COM125 on the device manager (CDC-ACM class). But, I can't find it under /dev/tty* listing. Does cygwin have a limitation on CDC-ACM class of com ports or numbers greater ...
2
votes
2answers
79 views

How to interpret all fields of `utmpdump /var/log/utmp`

I'd like to monitor logged in sessions, include how they logged in (physical console or SSH), and how long that session has existed for. It seems like utmpdump /var/log/utmp has that information, but ...
3
votes
1answer
56 views

Where can i find any information about ancient doshell(8)?

I check the openvt manual by running "man openvt" command, and i found doshell(8) under "SEE ALSO" section: But there's no manual if i do "man 8 doshell": I checked the online manual at ...
7
votes
1answer
83 views

How to find which serial port is in use?

The Question: I plugged in a device (i.e. GSM modem) through a serial port (a.k.a. RS-232), and I need to see with which file in /dev/ filesystem this device was tied up, to be able to communicate ...
1
vote
2answers
132 views

How do I run a command on a TTY from a SSH session?

Does anyone know of a way that I could run a command from my ssh session and have it display on tty1? It seems like I could do that like: script command >> /dev/tty1. However, if I were to do ...
4
votes
4answers
185 views

Login into a GNU/Linux distribution is taking too long

So, When I try to login with my username and password (in tty), and insert a wrong password, I need to wait around 5 seconds for the system to tell me that the password is wrong. Why the validating ...
6
votes
1answer
84 views

How to use agetty from the command line

Is it possible to use agetty from the command line? I tried the command sudo agetty -s 34800 tty8 linux but it returns after a few seconds and tty8 is not open. Is it the expected behaviour? Also, ...
0
votes
0answers
11 views

Where can I find more information about /dev/pts/*, /dev/ptmx, tty and pseudo terminals [duplicate]

As in the title I what to know more about terminals and pseudo terminals, how they are created and how to create my own terminal emulator. man for pts and ptsname show some hints, but I want to learn ...
1
vote
1answer
83 views

Block TTY echo to display

I have a minimal Ubuntu as a Linux server. It starts many scripts on startup that is ok but I want to disable tty1 to echo everything to display When I start this server a login promt is presented on ...
0
votes
1answer
243 views

Bootloader fails to load linux kernel

I upgraded linux kernel from 2.6.32 to 3.0.7 but now bootloader isn't able to load the kernel image. Specifically, boot procedure freezes after: Starting kernel ... Uncompressing Linux... done, ...
0
votes
1answer
116 views

How can I print out the current keybindings in Linux/Debian? [closed]

How can I print out the current keybindings in Linux/Debian ? I tried xmodmap -pp and got the response: xmodmap: unable to open display ''
0
votes
0answers
40 views

Which getty should I use for /dev/tty1 - tty6 text consoles in linux, agetty or something other

I'm configuring LFS linux and I want to select right "getty" for /etc/inittab to handle text consoles /dev/tty1 - /dev/tty6 (the text consoles handled by linux kernel, with output on first display). ...
0
votes
0answers
26 views

Can slattach control a serial WiFi device?

I have a Wi-Fi device which is driven by AT commands over a USB-Serial connection. I am able to successfully make a serial connection to the device and set the SSID, PSK, obtain an IP address, and do ...
1
vote
1answer
50 views

Buffer each line locally on a serial terminal

I use kermit to connect to a device over serial. The device is quite "dumb" and doesn't have any fancy shell. It is really just receiving commands over serial and sending outputs back over serial. ...
2
votes
2answers
112 views

Changing TTY font to a non-default font

I found two ways to change the TTY font: dpkg-reconfigure console-setup editing /etc/default/console-setup Either way I'm limited to the fonts in /usr/share/consolefonts (I'm using Debian). How ...
16
votes
3answers
556 views

What are the responsibilities of each Pseudo-Terminal (PTY) component (software, master side, slave side)?

I am trying to figure out how a tty works1 (the work-flow and responsibilities of each elements). I have read several interesting articles about it, but there are still some blurry areas. This is ...
1
vote
1answer
56 views

Connect to pseudoterminal (same user) from lost session [duplicate]

I was running several large processes at once, and my PC froze (I suspect due to heat, its a laptop, and the fan was at maximum for several minutes just prior to locking up). The mouse cursor moved, ...
0
votes
0answers
144 views

rs232 to usb not working

I also asked this question on AskUbuntu but there nobody comments on it I have a konig rs232 serial to usb adapter (no FTDI chip), but when I try to connect to a cisco switch/router (via Putty, ...
2
votes
1answer
50 views

Is monitoring rsync with a pts device possible?

I have a rsync backup script, and I was wondering about methods of monitoring it as it runs. I could have it save a log and use watch and tail, but I had a more elegant solution in mind that might be ...
1
vote
1answer
137 views

Track down process that has notty

I have a Linux server (Red Hat 2.6 kernel) which had a spike in load due to an Rsync process which seems to have forked many times, but the process was run by rsyncuser@notty I didnt see any cron job ...
1
vote
2answers
64 views

Is there a way to add some info about time/date to TTY prompt?

If you have a graphical display manager, you can notice date and time there, but I haven't seen such a thing when it comes to TTY. If I want to check the current time (or date) I have to log in. It's ...
1
vote
2answers
488 views

How to change the default TTY after boot?

Normally when system starts you have all output printed on the TTY1, and that's ok, but I start X-server via startx and achieve this by the following lines in the ~/.profile file : if [[ $(tty) = ...
2
votes
0answers
102 views

tty blinking cursor not at insertion point

I have an Ubuntu 12.04 system where I, at reboot, login a root. This morning I did the things I had to and thought about running apt-get -y upgrade I started typing this but before pressing Enter I ...
2
votes
1answer
318 views

How can I pipe commands to any terminal?

I often use more than one terminal (or terminal emulator) at a time; and while in X I can copy-paste commands, besides not being very practical, it obviously does not work on the real TTY. The first ...
0
votes
1answer
91 views

Questions about behaviour of running LiveCD Linux after unmounting a CD-ROM

Could anyone explain what happens in system after unplugging CD-ROM during working with LiveCD session? Suppose that I'm using Ubuntu LiveCD and suddenly by accident the CD-ROM disconnect for a ...
3
votes
2answers
81 views

Why does the Linux virtual terminal support only 16 colors, by default?

Why does the Linux virtual terminal support only 16 colors, by default? Is there a particular reason for this?
0
votes
1answer
131 views

Linux TTY Colours

I've had this issue for a little while now on a few machines, but never thought to ask anyone. Upon installing a new laptop the other day, and using the virtual terminal for a bit, I noticed that ...
2
votes
1answer
252 views

How can I make the TTY use the appropriate charset?

Note: forked of this per recommendation here. While I got the X keyboard layout right on my own after I fixed that stupid typo, I still can't set the console charset, key map, font map, or whatever ...
1
vote
0answers
189 views

Only met by a tty “login” prompt when booting Mint

I've installed Linux Mint 11 Katya (dual-booting with Win7) on my PC. After some problems with booting, I decided to use NeoGrub to add a Grub-based bootloader, configurable from within Windows, to ...
3
votes
1answer
129 views

USB device to be detected at the “same” /dev point always?

In Linux (actually I'm with CentOS v6.5), whenever I plug in my USB Terminal/Character Device (some kind of USB Adapter) for the first time (after booted), it is detected at: /dev/ttyUSB0 But ...