bash script for vnc over ssh tunnel

vnc.sh

#!/bin/bash

#HOST='tahufa@cube.jackhftang.com'
HOST='me@cube.jackhftang.com'
SOCK='/tmp/ssh_tunnel_vnc_cube.sock'
vncviewer='/Applications/TigerVNC Viewer 1.7.1.app/Contents/MacOS/TigerVNC Viewer'
PORT=${1:-5900}

## open socket
ssh -f -N -C -X -L 5900:127.0.0.1:$PORT -o ExitOnForwardFailure=yes -M -S $SOCK $HOST
if [ $? -eq 0 ]; then
	echo "ssh tunnel started successfully"
else
	echo "ssh tunnel failed to start";
	exit 1
fi

## start vncviewer
"$vncviewer" -FullScreen -DotWhenNoCursor=1 localhost:5900

## close socket
ssh -S $SOCK -O exit $HOST