2
votes
1answer
191 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 ...
3
votes
4answers
181 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
173 views

Does each user get his/her own tty(s)?

I put a simple echo command in a CLI tty by user1 expecting it to reach user2 who is logged in a separate tty. echo "Hello, world!" >> /dev/tty5 I expected user2 to get the echo message but ...
16
votes
6answers
50k 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
415 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 ...
5
votes
5answers
2k 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?
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 ...