I'd like the title of my terminal windows to show the last command that ran. It'd be handy for finding the terminal that's running Mongrel in Dev/Test/Prod etc (for testing rails apps).

I tried this code:

if [ "$SHELL" = '/bin/bash' ]

then

    case $TERM in

         rxvt|*term)

            set -o functrace

            trap 'echo -ne "e]0;$BASH_COMMAND007"' DEBUG

            #  export PS1="e]0;$TERM007$PS1"

         ;;

    esac

fi

At least, I think that's the code that I tried. It did work, but it caused some strange behavior, like window titles that would get stuck in a loop until I hit Ctrl C when changing directory to a symlink.

What's a reliable way to set my window title to the last command that was run?