I often like to kill a set of terminal instances by process id but mate-terminal (which I believe to be a fork of gnome-terminal) will run a number of windows under the same PID. This is not always true and I haven't noticed what determines it,but the outcome is that if I kill a PID I will kill some windows that I don't want to kill.
As a fix, I'd like to tell terminal to start with a new process, but I don't see that option in the terminal man page. Have I missed something? Or perhaps there is a bash command that can force this.