[LAD] remote commands

Hello all, Trying to control a cluster of computers from the only 'headed' one I've run into two unexpected problems. Any thoughts or suggestions are welcome. (all the ssh in the examples below use dsa keys to authenticate without a password, logins are always OK) The first is this: Open an xterm and do ssh -X remotemachine . ~/.jackdrc This runs jackd on the remote machine, and a Ctl-C in the local terminal stops it. All OK. But then ssh -X remotemachine ". ~/.jackdrc" runs jackd as expected and its output appears in the local xterm. But a Ctl-C in the local xterm does terminate the ssh connection but not the remote jackd. Why not ? It's not backgrounded. The second is this: Open an xterm and execute scriptA which contains a line like ssh -X remotemachine scriptB This runs scriptB on the remote machine. The script contains 'make' commands, one of which is 'sudo make install'. The produces an error from sudo, complaining there is no terminal. But surely there is one, even if it is via an ssh connection. Replacing the line in script A with ssh -X remotemachine xterm -e scriptB runs the script in a new temporary xterm and then the sudo command is executed without any problem. Why does sudo think there's no tty in the first case ? TIA, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia O tu, che porte, correndo si ? E guerra e morte !