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Detaching and reattaching a process to different terminals?



I'm running a program for a research study I'm involved in, but I've run
into a slight problem. I executed it on an xterm (and it's been running
for a few days now, so I don't want to stop it mid-calculation), but
today is a workday. At work, I use two screens on my laptop. The only
way to accomplish this is to restart X so Xinerama can take effect.
Unfortunately, this will also have the nasty side effect of killing
execution.

Is there any way to detach the pid from that terminal and reattach it to
one of the consoles? Or background it in a way where it will survive X
restarting? It's not critical, but it's something I've wondered before,
and which will come in extremely handy today.

-- 
Stephen Touset <stephen@touset.org>

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