Is it possible to use the keyboard in order to select some text in the terminal windows that is not in the currently edited line? (for example, in order to copy part of previous command output).
As far as I know, neither of the "big three" terminal emulators can do that, but both
It's not quite what you're asking, but if you redirect output through xclip, you can pull it from the clipboard and edit it. I never thought about using it to minimize keyboard use.
Under gnome-terminal, I can use shift-insert to paste into the here-file. From the man page xclip -selection "clipboard" does the real clipboard instead of the x buffer.
I can't seem to get it working with tee though... hmmm.... that's kind of important.