Executing string sent from one terminal in another in Linux pseudo-terminal

Question

Lets say I have one terminal where the output of \"tty\" is \"/dev/pts/2\" From another terminal, I want to send a command to the first terminal and execute it. Using: echo \"ls

Answer 1

I realize it's a year late, but there is a simpler way I think. Doesn't this work?

ls > /dev/pts/2

It works on my system.