passing variables through ssh

Question

I am trying to write a script to login to several remote servers and execute a script in each server. However, I'd like to pass a variable through ssh. Something like this:

var="/home/dir/"

  ssh -T $mchname <<'ENDSSH'    
    $var"run_script" < input > output &    
ENDSSH

This naive try does not work ($var is simply null). What would be the correct syntax? Thanks in advance.

Answer 1

Remove the quotes from around ENDSSH. They prevent expansion of variables within the here document.