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

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2
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1answer
545 views

How to open tty or execute some script when the shortcut Ctrl+Alt+F[1-6] doesn't work and X11 is partially frozen but system is still working?

I'm using Ubuntu 10.10 with Gnome on Acer Aspire One netbook. The X11 or just some parts of Gnome like panels and partially windows (details described below) are frozen which doesn't allow to do ...
0
votes
0answers
7 views

No video on tty after sleep

I have Debian 3.2.63. After I push 'Sleep' button and come back my TTY do not work, only X11. Anybody know how restore video parameters after suspend?
1
vote
1answer
751 views

Setting up tty ports on Beaglebone Black with Angstrom linux

I'm using a Beaglebone Black running the Angstrom v2012.12 build that came pre-loaded. I want to be able to connect another device to a serial port via the UART connections on the GPIO headers. The ...
0
votes
0answers
15 views

Reading from /dev/tty [duplicate]

How do I read what is being typed on a different virtual terminal? For example, I was trying to read from /dev/tty0: I did cat < /dev/tty0 and read < /dev/tty0 But nothing is being sent ...
0
votes
1answer
30 views

Make own graphical server [on hold]

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
41 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
23 views

Switching to alternate tty device does not give command prompt [closed]

I am trying to install a graphics driver and need to terminate X in order to do so. However, when I switch to an alternate tty device using CTL-ALT-Fx I am met with only a black screen. It appears as ...
1
vote
0answers
6 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 ...
0
votes
1answer
458 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
410 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
2answers
21 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 ...
5
votes
4answers
1k views

Enabling Numeric Keypad

I have trouble with the numeric keypad (NumLock keys) being unusable while typing. While I don't think it's GUI specific, this happens both in Gnome and KDE. Sometimes it works in TTY, other times it ...
13
votes
3answers
413 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
6answers
1k views

Graphics in TTY

Something has come up which demands me to work only in command line. My primary job is programming (mostly in Fortran and Octave) and I need to display plots. As a lame example: I open octave and ...
4
votes
1answer
34 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
39 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 ...
8
votes
2answers
6k views

Poor TTY resolution with nVidia driver

The resolution of the TTY1-6 is poor ~ 640×480 Ubuntu 11.10 | Grub2 | nVidia | NVIDIA GT215 Board I went through the process on this site and after the edit the GRUB menu appears in the correct ...
0
votes
2answers
51 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 ...
0
votes
2answers
80 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 ...
0
votes
1answer
128 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 ...
-2
votes
2answers
267 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 ...
11
votes
6answers
9k views

How to stop cursor from blinking

How do I make the cursor stop blinking when in a TTY? (or anywhere else). BONUS Points for one universal setting that stops the cursor blinking almost everywhere.
4
votes
1answer
41 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 ...
0
votes
0answers
49 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.
1
vote
0answers
30 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 ...
0
votes
0answers
52 views

System not responding and ttyS0 (ttyS0) main process (1627) killed by INT signal

The system is not responding(Unable to do SSH or Telnet, even scheduled cron job is not running) if it runs for more than 5 days. The scenario is "the ssh session is opened and console is opened from ...
1
vote
1answer
11 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 ...
2
votes
1answer
37 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 ...
2
votes
0answers
28 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 ...
2
votes
1answer
592 views

Call sudo from Jenkins

I have one build machine which has a user abc which is has limited sudo access. When I check out the source code and run my build script, it works fine. The build script contains sudo calls for which ...
0
votes
0answers
86 views

How to make switching virtual terminals instant?

I've configured kdm (editing /usr/share/config/kdm/kdmrc) to automatically open two displays: StaticServers=:0,:1. When I switch between them with Ctrl+Alt+F7-8 there is a delay of about 2 seconds ...
0
votes
0answers
49 views

systemd with 10 ttys and Desktop on Ctrl+Alt+F5

I am running systemd on ArchLinux. I have read various posts of doing this but it seems impossible (i.e. I am incompetent in implementing this:)) ). I want to disable the on-demand tty spawning of ...
23
votes
4answers
1k 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 ...
2
votes
1answer
150 views

Use sudo with ssh command and capturing stdout

I'm trying to run a command as root (via sudo) on a remote server, and capture stdout (but not stderr) into a file. eg. Something like this: ssh user@remote "cat /root/file.tar | gzip" > ...
3
votes
2answers
182 views

leaking memory with shell script and tty [closed]

I'm running a shell script on a raspberry pi to communicate with a arduino. Every hour my ram gets used up by about 50 megabytes more. The script itself just connects to ttyACM0 (the arduino's usb ...
0
votes
1answer
709 views

ERROR: init: ttyS0 (/dev/ttyS0) main process (1612) terminated with status 1

I'm getting the following errors every 10-30 seconds on a virtual Red Hat Enterprise Linux 6.5 2 Server on Amazons EC2. Sep 23 09:57:05 ServerName init: ttyS0 (/dev/ttyS0) main process (1612) ...
3
votes
1answer
56 views

Make program in a pipe to think it has tty

Test environment: $ mkdir testdir $ cd testdir $ echo | tee "file name" Now, ls will print file?name (under Ubuntu GNU bash, at least), while ls | cat will print file and name in separate lines. ...
2
votes
2answers
432 views

Why are my virtual consoles completely blank?

When I go from my graphical session to a virtual console by Ctrl + Alt + F i (with i in 1 - 7 and 9-12) I see a completely black screen. Only on F8 I see the GUI. Not even a blinking coursor on the ...
2
votes
0answers
41 views

How to use secondary VGA device for TTYs

I have a machine (a virtual XEN DomU, but I don't think it matters) with two video cards. I would like to display the TTYs on the monitor connected to the secondary video card (i.e., not the display ...
5
votes
4answers
16k views

Pseudo-terminal will not be allocated because stdin is not a terminal

I'm trying to set up automatic SSH hopping through a server which doesn't have nc. This works from the command line: ssh -A gateway ssh steve@target (I have added my public key to the SSH agent). ...
0
votes
1answer
275 views

Xorg with Kernel Mode Settings won't work with other tty

Using intel video drivers with kms and i915 on arch linux I haven't been able to start Xorg in a different tty than from the calling one logged as root. By example: Logged as root on tty1 X vt7 :0 ...
1
vote
2answers
46 views

Connect two ttySx devices on the same machine

I'm just wondering, whether it is possible to connect /dev/ttyS0 with a virtual device node (e.g. a created with mknod /dev/ttyTest) so that the output from ttyS0 is sent to ttyTest. I would like to ...
1
vote
1answer
80 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) ...
2
votes
1answer
231 views

How to enable/disable a serial port?

I need to disable and then enable a serial port for testing purposes on a Java program. Since the man page of setserial is stating: "Using UART type none will disable the port.", I use sudo setserial ...
4
votes
1answer
163 views

look up the device from its tty file?

Here is from my Ubuntu $ ls /dev/*tty* /dev/tty /dev/tty17 /dev/tty26 /dev/tty35 /dev/tty44 /dev/tty53 /dev/tty62 /dev/ttyS12 /dev/ttyS21 /dev/ttyS30 /dev/tty0 /dev/tty18 /dev/tty27 ...
4
votes
4answers
494 views

Multiple terminals at once without an X server

There is a way to visualize multiple terminals at the same time without running a Xorg session ? I have a really low profile machine that could be great for some basic stuff but has an horrible ...
0
votes
1answer
35 views

How can I automatically interrupt what I'm doing to input something?

As per Nick Winter's The Motivation Hacker, I want to measure my happiness. I know that I'm bad at remembering things or responding to reminders, so I'd like to set up a daemon that, at random ...
448
votes
3answers
85k views

What is the exact difference between a 'terminal', a 'shell', a 'tty' and a 'console'?

I think these terms almost refer to the same thing, when used loosely: terminal shell tty console What exactly does each of these terms refer to?
2
votes
1answer
3k views

Unable to receive data from /dev/ttyACM0 device [closed]

Using USB based CAN device connected on AR9350 mips processor based Atheros reference board with linux kernel 2.6.32.61. Which is coming up as /dev/ttyACM0 device. In which Able to transmit data from ...
6
votes
5answers
3k views

How can I run `watch` as a background job?

When I run: watch 'cmd >> output.txt' & the job gets suspended by the system: 3569 Stopped (tty output) Is there a workaround?