Useful things you can make SSH do
Two more that come to my mind ...<p>1. Comparing local and remote files<p>$ ssh user@123.4.5.6 "cat /tmp/remotefile" | diff - /tmp/localfile<p>2. Outputting your microphone to a remote computer's speaker<p>dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp