Hello,
I am new in this forum. Excuse my bad englisch, I come from Germany.

Now my problem:
echo "hello" > /dev/ttya1 gives a hello to the screen which is connected to ttya1. I search a command which do this right in the other way. A command which write into /dev/ttya1 such like as the caracters comes from the terminal.

I hope you understand.

I think that was the way from a hacker who delete my data. The userscreen looks like as there is a gost at the keybord. The user has seen all steps on his screen but he had no chance to stop it.
The caracters and commands comes so quickly that I think, it must come from a shellscript startet from the hacker. All commands where logged for this tty.

I hope someone can help me

Greetings from Germany
Peter F.