Run command

[Vladimir Zolotykh <gsmith eurocom od ua>]

Could someone please give me a clue how to implement something
like "Run Command" ? Suppose I need to PING some address. Now I call Xterm,
then ping command in this terminal window, then I close the terminal window.
Even more inconvenient when I need just 
  sudo emacs
The tiresome sequence of actions again, calling xterm, doing sudo, closing
xterm.
Is it possible to implement a new Sawfish command calling which would cause
reading the command from keyboard and running it (maybe waiting for results).
Something like "Run Command" in WindowMaker or GNOME-SESSION ?

-- 
Vladimir Zolotykh