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

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3
votes
1answer
624 views

Outputting to the screen on an ARM Mini2440. Currently just has a login prompt

I have a mini2440 ARM computer with a small screen and currently have it booting Debian Squeeze. I'm communicating with it over a serial connection using minicom. When the thing boots it gives me a ...
4
votes
1answer
2k views

Writing to stdout except for output redirection C

I have to make a simple app for school. I have to write arguments one per line on the terminal, and return on stdout the user choices. For example, I write cat my_app main.c main.h, if the user ...
3
votes
1answer
2k 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*. ...
19
votes
6answers
66k views

How to connect to a serial port as simple as using SSH?

Is there a way to connect to a serial terminal just as you would do with SSH? There must be a simpler way than tools such as Minicom, like this $ serial /dev/ttyS0 I know I can cat the output ...
4
votes
4answers
442 views

ls command operating differently depending on recipient

How does commands like ls know what its stdout is? It seems ls is operating different depending on what the target stdout is. For example if I do: ls /home/matt/tmp the result is: a.txt b.txt ...
3
votes
1answer
719 views

How to enable auto login in TTY while getting softwares like tmux work?

Currently i'm using flow redirect to enable auto login mode , but when i launch tmux in tty1 , it stuck. c1:12345:respawn:/bin/login -f USERNAME</dev/tty1 > /dev/tty1 2>&1 Is there any ...
25
votes
2answers
22k views

Difference between pts and tty

Possible Duplicate: What is the exact difference between a 'terminal', a 'shell', a 'tty' and a 'console'? I always see pts and tty when I use the who ...
3
votes
1answer
531 views

Low-level serial configuration?

I'm using embedded Linux platform, kernel is 2.6. I'm using stty command to configure ttyS* high level. The problem is that when I want to turn hardware flow control on: stty -F /dev/ttySA0 crtscts ...
1
vote
2answers
179 views

Multiple Unix Sessions

Is there any way I can open multiple Unix sessions on different servers at the same time? I don't want to use ssh, as I want to monitor the CPUs of all those servers at the same time, which will keep ...
3
votes
2answers
5k views

Run getty on a serial port on startup on RHEL

I want to put a getty on ttyS2 on a RHEL 6.1 box so I can use IPMI's serial-over-ethernet functionality to log in to a machine when SSH isn't working. In the past (on Ubuntu?), I used to add a line ...
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?
3
votes
2answers
1k views

How to script /etc/issue?

I would like to pipe my tty number through figlet (ASCII generator) for the /etc/issue (message shown before login). Obviously this means I can't just update it from /etc/rc.local. On my system ...
8
votes
1answer
5k views

How to change tty login prompt?

To be clear, I am not referring to /etc/issue (shown before the prompt) or /etc/motd (shown after login), but the prompt itself, which is currently hostname login: For good measure, I am running ...
2
votes
2answers
533 views

What's the difference between the ^S and ^Z control characters inside a terminal?

When using a terminal emulator, one can stop the currently running program with either CTRL-Z or CTRL-S. What's the difference between these signals?
5
votes
1answer
3k views

How can you get console backgrounds for Arch Linux?

I have tested out openSUSE and found that the tty1 is a bit different from other systems as the tty has got a background. I know that Knoppix has a tux penguin for each core the computer has, but I'm ...
1
vote
0answers
163 views

Arch Linux not functional after kernel upate [duplicate]

Possible Duplicate: Arch Linux not booting after system update After running a system update, in which the kernel was updated, when I try to boot Arch (in single user, not quiet), I get the ...
2
votes
1answer
256 views

bash -i behavior and “why is my terminal hung?”

This happens on every distro I've tried: $ cat | bash -i bash-3.2$ ls foo bar bash-3.2$ And now the session is hung. Ie, you get one command and then you pretty much have to close the terminal ...
3
votes
2answers
498 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 ...
2
votes
1answer
184 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 ...
1
vote
1answer
588 views

Can I get an 8-bit clean connection with 'socat'?

This question is mostly about "socat", but here's some background to go with it: I am trying -- for reasons having mostly to do with nostalgia -- to write a virtual modem driver for use with ...
2
votes
2answers
743 views

RJ-45 <-> RS-232, can I substitute the RS-232 side and abuse my Ethernet port as COM port?

We have a PCIX board (with MIPS CPU) from some vendor and it has an RJ-45 jack on the "board-side", where the cable has an RS-232 plug on the other side. The expected protocol is clearly the same as ...
5
votes
1answer
123 views

How do I ensure that a terminal remains scrollable?

On my tty terminals (1-6), I lose text when I move away from it and back (i.e. pressing ShiftPg Up doesn't reveal any scrolled-off text). How can I recover this text?
11
votes
1answer
4k views

TTY On External Monitor

When using my laptop at home, I usually use an external monitor, keyboard, and mouse with my laptop's screen as a second monitor. This is all easily configured using a nice GNOME utility that I ...
447
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?
5
votes
3answers
2k views

How to clear terminal after logging out?

Currently on my laptop when I log out I can still see traces of my last activities (in tty). How can I tell it (Gentoo) to clear the screen before logging out?
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.
6
votes
1answer
3k views

Show a notification across all running X displays

Using the command line, I'd like show a notification on every running X display. ( and running console ) Something like: notify-send-all 'Warning' 'Nuclear launch in 5 minutes, please evacuate' Is ...