I'm not sure what it does

setsid(2) creates a new session and connection to the controlling terminal is lost. The calling process becomes the new session and process group leader. This is commonly used to disconnect from a terminal when writing a daemon.

I doubt it is relevant here. The editor being launched is an X-Windows application which does not use STDIN/OUT/SHAKEITALLABOUT. Is it Friday yet?

In reply to Re^2: Keep a "system" process running if script is prematurely exited? by cdarke
in thread Keep a "system" process running if script is prematurely exited? by westrock2000

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