linux - How to run process as background and never die? -

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i connect linux server via putty ssh. tried run background process this:

$ node  server.js &

however, after 2.5 hrs terminal becomes inactive , process dies. there anyway can keep process alive terminal disconnected?

edit 1

actually, tried nohup, close putty ssh terminal or unplug internet, server process stops right away.

is there have in putty?

edit 2 (on feb, 2012)

there node.js module, forever. run node.js server daemon service.

simple solution (if not interested in coming process, want keep running): 

nohup node server.js &

powerful solution (allows reconnect process if interactive): 

screen

also consider newer alternative screen, tmux.


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