Dear List :
I use "Ctrl-z" to let emacs sleep.
Then I use "fg" to wake it up.
Now I open emacs & make it sleep ,I open emacs & make it sleep ,I open emacs & make it sleep .
( pls forgive me , English is not my native language .)
How could I wake up any of them by their PID ? (I see their PID by using "ps -A")