Here’s a HowTo for a nice visual indication to see quickly if your Mac OS X Terminal is running which ssh connection.

The trick is to change your Terminal Theme before you ssh and change it back afterwards.

1. Create Theme:
got to Terminal -> Preferences -> Settings create a new theme (or copy existing one) and adjust to your needs, e.g. a light red background etc. Give it a nice name e.g. “SSH-Theme”

2. Add this function to your .bashrc

function tabc() {
NAME=$1; if [ -z "$NAME" ]; then NAME="Default"; fi
osascript -e "tell application \"Terminal\" to set current settings of front window to settings set \"$NAME\""
}

“Default” is my default Terminal theme, name this whatever u have

Usage:
tabc SSH-Theme #switch to theme with name
tabc #switch to default theme

3. Create alias to ssh to server:

alias sshmyserver="tabc SSH-Theme; ssh yourserver.com; tabc"

That’s it – your are done! Now, if you type sshmyserver, your Terminal color will change, ssh will start, and when you end ssh, everything will be back again..

Btw. for Terminal on Mac OS X, I very recommend Visor – a quake like console

Sure you do remember Quake. And sure you di remember how cool the console faded / slided in from the top? Image this would be available for your Mac OS X Console/Terminal. Well now (actually since ages, but I just forgot to mention it is. As small SIMBL plugin called Visor Plugin allows to to bring up the Terminal via a hotkey in anytime. I really love it and can’t without it anymore.
Check it out here: http://visor.binaryage.com/