How to echo to a remote Raspberry Pi terminal over SSH

Question

The idea is: if I remotely ssh into my Raspberry Pi, is there a way to echo to the Raspberry Pi's terminal?

Assuming I haven't entered desktop mode.

joan · Accepted Answer · 2015-05-08 17:22:52Z

3

The console is on /dev/tty0 so

echo string >/dev/tty0

You might have to add yourself to the tty group

sudo adduser pi tty

answered May 8, 2015 at 17:22

joan

67.3k5 gold badges66 silver badges101 bronze badges

I did the second line, still permission denied to tty0 :(
– andykais
May 8, 2015 at 18:23
You have to log in again before changes like this are effective. I'm not familiar with joan's use of adduser here, so if that doesn't work, try sudo usermod -G tty -a pi (and login again).
– goldilocks ♦
May 8, 2015 at 18:32
I have ran both add user commands, both work, but permission is still denied to tty0
– andykais
May 8, 2015 at 18:51
Did you close the ssh session and restart? Are you using Raspbian? What does ls -l /dev/tty0 report? What does groups report? tty0 is tty digit zero.
– joan
May 8, 2015 at 19:03
ls -l /dev/tty0 reports crw------- 1 root root 4, 0 May 8 19:05 /dev/tty0 and groups reports pi adm tty dialout cdrom sudo audio video plugdev games users netdev input spi gpio I beleive this works when I am root user, I just cannot seem to add pi to the list of users (and yes I have reboot each time)
– andykais
May 8, 2015 at 19:18

| Show 1 more comment

1 Answer 1