POSIX (UNIX, Linux, BSD, Max OS X etc.)
(Several) dozens of terminal windows/tabs open at the same time? Me too. Gets confusing trying to find a particular shell sometimes. Snow Leopard introduced a feature that allows you to set a specific title for each of your Terminal windows, but to do it you have to use the mouse/GUI. Ugh.
Here is a solution that not only is mouse/GUI free, it actually works across platforms. Source (or add) the following into your .bashrc:
We have all done it before. Idiotic actions that result in catastrophic results (usually in conjunction with "
sudo"). Some more than others. Have you ever tried clearing out some directory using "sudo rm -rf *", and then realized you were actually in the root directory? What about "sudo rm -rf .*", in the mistaken impression all you are going to being is to blow away hidden files in the current directory? 
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