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

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4
votes
2answers
518 views

How to redirect tty1 to an X11 (KDE) Konsole shell?

I would like to see what is going on at tty1 - the console I was booting from - while I am now on tty7 running X11 with KDE4, without switching back to tty1 (Ctrl+Alt+F1). I would like to see it ...
5
votes
2answers
1k views

How can I launch applications from 2 ttys on launch?

I've currently got 2 ttys logging in automatically, but I need to launch a node script from one and a C program from another as soon as the device loads. The device is a Raspberry Pi running ...
2
votes
1answer
801 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, ...
2
votes
1answer
79 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 ...
5
votes
1answer
400 views

Linux VT Emacs in tmux, breaks color and cursor

TERM is set to screen. I tried with screen-256color, but then the colors went really nuts. I also tried xterm, linux, and some others (that I could think of, not really thinking) but screen is the ...
2
votes
1answer
503 views

How to connect to virtual /dev/ttyX from same machines pts terminal?

I want to get output/input from /dev/ttyX console (normally accessible directly using keys ctrl+alt+FNr, where Nr is number of /dev/ttyNr: ctrl+alt+f4 access /dev/tty4). I want to view and control ...
1
vote
2answers
148 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
1answer
384 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 ...
2
votes
2answers
2k 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) = ...
3
votes
1answer
1k 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
535 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 ...
3
votes
2answers
116 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?
2
votes
1answer
1k views

Re-ordering serial ports on a multiport card

I have a Red Hat Enterprise 6.2 machine with two on-board serial ports and a PCIe card with 8 additional serial ports (16C950 UARTs, 16C550 compliant). I've added the kernel option 8250.nr_uarts=10 so ...
3
votes
3answers
1k views

X11 forwarding through SSH

I have been playing around with X11 forwarding the past few hours and so far I've managed to forward my desktop pc's X Server to my laptop, using X11VNC as server and X2VNC as client. X2VNC uses ...
1
vote
0answers
424 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 ...
6
votes
2answers
2k views

Detect if running in a virtual terminal?

I'd like to autologin to tty1 on login and then use vlock to lock it. How can I detect from Bash if the current terminal is a console virtual terminal (e.g. tty1), so that I can put the vlock line ...
2
votes
2answers
2k views

how to re-enable input on a serial console

I have an old router which runs Linux and I'd like to have a serial console on. This used to work fine, but after a firmware update, I can now only get output on the console and cannot give any input ...
3
votes
0answers
715 views

Plymouth splash not working and causing VT problems

Since I tried installing Plymouth (boot splash), I'm facing two problems : It's not working My Virtual Terminals (tt1 - 6) aren't working anymore Here what I did : Added plymouth hook (after ...
2
votes
2answers
382 views

Weird escape sequence

I need help identifying what this escape sequences represents. I see this sequence is autogenerating on my server's console, but I'm not sure what is the reason for that. Escape sequence: ^[[[D I've ...
2
votes
0answers
1k views

Trying to understand how TTYs and PTYs work in CentOS 6.5? [duplicate]

I started to dig into the whole Linux pty and tty hell. I'm trying to understand how it works here in Linux so I was reading quite a lot of articles that covered this topic. So far I know: TTYs ...
0
votes
1answer
110 views

Virtual TTY jumps to the next on launching from the Openbox menu

When I launch a terminal from my Openbox menu my virtual terminal TTY jumps to the next CtrlAltF12 slot. It seems that this problem appeared after I wanted some more than 7 TTYs and added some to ...
15
votes
2answers
962 views

Can the empty spaces/background in a terminal be replaced with a random(but pretty) pattern of ASCII characters?

Context and Question There are many ways to colorize the terminal and shell environment. The output of individual commands, such as ls and grep, can also be colorized. Not directly related but ...
3
votes
1answer
455 views

How to switch tty with a script / cronjob

Is it possible to switch the current tty/vt with the help of a bash script or a cronjob? I only know the physical keyboard input "Ctrl-Alt-Fx". I would like to show two virtual desktops at different ...
3
votes
1answer
422 views

What is the maximum allowed number of TTY, is it defined anywhere in kernel headers?

What's the maximum allowed number of TTYs? I found pty.max, but is there anything similar for TTYs? Or is it defined as a fixed value in kernel headers, I couldn't find that
7
votes
1answer
4k views

Read what is written to /dev/tty*

How can I read what is written to /dev/tty*(* = 0 - number of tty)? I tried sudo tail -f /dev/tty1 on one terminal(X) and then sudo cp .emacs /dev/tty1 from another. X didn't show the the content of ...
3
votes
1answer
3k views

Change the number of generated /dev/tty devices

I'm building an embedded Linux system, based on Gentoo. Using udev, all tty devices are probed with a PROGRAM stanza to determine if they are a modem. Right now the system boots up with 64 /dev/tty*. ...
4
votes
1answer
304 views

GNU Screen weird characters on click

I have a small problem in GNU screen. A GNU screen session runs on my RaspberryPi. Now sometimes, when I join it, if I click in the terminal (I'm using terminator on Fedora) I see weird characters ...
2
votes
2answers
1k views

How can I replace a tty using getty with qingy on ubuntu 12.04 or later?

Qingy is a getty replacement. I'd like to use it for a tty terminal on Linux Mint 15 (in hopes of getting tmux to get proper 256 colors in tty which fails with fbterm) which means replacing getty. ...
32
votes
1answer
1k views

What happens when Ctrl + Alt + F<Num> is pressed?

I am looking for an explanation of what happens in Linux when this key combination is pressed to change the current terminal. In particular, what software component intercepts this key combination and ...
2
votes
3answers
1k views

Pasting binary data into a Unicode terminal

I need to be able to paste binary data into a terminal. For some reason, every byte outside the ASCII range (0x80-0xff) is pasted as the same three byte sequence 0xef 0xbf 0xbd. For example: $ echo ...
1
vote
1answer
114 views

Capture textual snapshot of pseudo terminal

My question is related to Keyboard and Console, but I want to do it for an arbitrary pseudo terminal, and not just the built-in Linux ones. Also, I'm not interested in a stream, I just want the ...
3
votes
4answers
503 views

How do you find what keys the “erase” and “line-kill” characters are in Ubuntu?

I'm new to Unix and have bought today a copy of "The Unix Programming Environment". I'm trying out the stuff from the book. But some of them are not working as expected like : To kill a line and ...
2
votes
1answer
480 views

accessing stdin/stdout of a process started in another tty

I logged in to my linux physically(say tty1) and started a process that watches stdin for commands and has some stdout-put. How can I access/use this process from a SSH session?
3
votes
0answers
123 views

No Login on created on tty2 to 6

On my Debian Linux no Login is possible on terminals 2 to 6. Login on 1 works fine, xorg-session with XDM and awesome wm works, too. The Error Message shown on these 5 screens is: ...
0
votes
1answer
234 views

Making a tty9 on a openvz VE

I am in a virtual environment. I am installing Asterisk and freepbx. They use this script amportal and it has a requirement to check for tty9 there is alot of mention on folks running this in a VE ...
4
votes
1answer
205 views

Use case of providing file-like API to terminal/console

It was explained in this Stack Overflow thread that each logical terminal has a "pseudo-terminal", and that writing to one: $ cat some-file.txt > /dev/ttys002 will cause the data to appear in ...
2
votes
1answer
168 views

How to restore from a scrambled screen?

My screen is scrambled while reading some unexpected chars, It happens in a local tty, so logging out won't help. Any ideas? Hopefully I don't have to reboot
2
votes
1answer
188 views

Why does `last` show '{' and '|' in the TTY field?

We recently set up a new FreeBSD 7.2 machine on March 11. When looking at last, we noticed some funny characters for the TTY field. What do these characters mean? Note that at this time, the ...
2
votes
2answers
10k views

How to set default console keyboard layout in Arch Linux?

Whenever I reboot my computer I have to set the keyboard layout in a console again with loadkeys. Is there a way to change the default keyboard layout that is loaded everytime the computer boots?
11
votes
2answers
243 views

Is there a way to mirror USB outputs?

I'm currently writing a program for a project. It is for a braille reading system where I have a braille display connected via USB that is controlled by a program called brltty. One of the ...
3
votes
1answer
2k views

sudo askpass: ask from other tty

Context I want to setup rsync backups of my server, so I run the following command rsync -r -e ssh --rsync-path="sudo rsync" rsyncuser@example.com:/ /backup/ Ideally, that command would ask my ...
4
votes
1answer
690 views

Debian chroot blocking PTTYs on host

I've created a Debian-based chroot environment using debootstrap under Arch Linux, and fill it with life like this: #!/bin/sh mount -t proc proc $CHROOT/proc mount -t devpts devpts $CHROOT/dev/pts ...
1
vote
0answers
41 views

How to get 256 color support in a login shell TTY? [duplicate]

I want to experiment with a fully text-based environment, however, the only thing that is stopping me - is getting 256 colors so my Vim color schemes could work perfectly. When I enter a TTY by ...
2
votes
2answers
198 views

Take copy of TTY0 text

I have some output in TTY1 that I think might hold clues as to why my last GUI session froze (CtrlAltBackspace was able to get me back to the terminal and I reloaded the GUI). However, I cannot seem ...
3
votes
1answer
2k views

No room on ep ring?

I just switched to tty1, and I'm getting all kinds of output. It all looks like this: [timestamp] xhci_hcd 0000:00:14.0: ERROR no room on ep ring It's happening over 100 times per second, every 5 ...
4
votes
1answer
11k views

Change the number of rows and columns in the TTY [duplicate]

I want to resize the terminal which comes up when you press CtrlAltF1 (or F2,F3,...). 25x80 is small for a 24" screen. Tried using stty, but the commands stty columns 200 and stty rows 50 does not ...
0
votes
0answers
106 views

Root has no permission on virtual console screen devices

Even being root I can't do the following: # cat /dev/vcs1 cat: /dev/vcs1: Operation not permitted And the rights are set correctly: # ls -o /dev/ crw-r--r-- 1 root 7, 1 Aug 5 22:00 vcs1 ...
1
vote
1answer
49 views

Cannot figure out how to revert back to backed up profile file

Basically, I made a backup copy of my /etc/profile (or ~/.profile I can't remember exactly) file that executes as soon as you login to a TTY, and then I changed the one that was there, and now it ...
1
vote
1answer
1k views

How to disable respawn for terminal?

In old 5.3 rhel, we used to define the number of terminals and their respawn settings in /etc/inittab file as below. 1:2345:respawn:/sbin/mingetty tty1 1:2345:respawn:/sbin/mingetty tty2 ...
7
votes
1answer
2k views

In which cases is SIGHUP not sent to a job when you log out?

I read an answer from a user who claimed that running foo 2>&1 >& output.log & would result in foo continuing to run even when they log out. According to this user, this even ...